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Apple MacBook Air 13-inch (M4, 2025) vs ASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

A

Product A: Apple

MacBook Air 13-inch (M4, 2025)

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B

Product B: ASUS

Zenbook S 14 (2024) UX5406SA-BH71T-CB

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Only differences

AApple MacBook Air 13-inch (M4, 2025)

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

General

7 of 9 differ

Series

MacBook Air1Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026

Zenbook4Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406Read 13 October 2026Zenbook line.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

MC6T4LL/A, A3240, Mac16,1210Retailer pagedrazby.fs.gov.cz/handlers/Vyhlaska/4914Read 7 October 2026Exact US Sky Blue base reference, 10 CPU / 8 GPU / 16 GB / 256 GB. Government tax-administration public auction listing contains the original manufacturer package-label pixels. Government-authored wrapper is retailer/sales listing provenance, not a manufacturer PDF. A3240 and Mac16,12 are common 13-inch M4 identifiers. No other GPU SKU, refurbished part number or unique device identifier is retained in product data.11Maker product pagesupport.apple.com/en-us/102869Read 7 October 2026Exact MacBook Air (13-inch, M4, 2025) row names Model Identifier Mac16,12. Broad part-number family list also contains higher-GPU configurations, so it is not copied wholesale.12Spec databaseeverymac.com/systems/apple/macbook-air/specs/macbook-air-m4-10-core-cpu-8-core-gpu-13-2025-specs.htmlRead 7 October 2026Exact 10 CPU / 8 GPU / 16 GB / 256 GB page independently identifies MC6T4LL/A, A3240 and Mac16,12. Current full ordinary indexed table read, direct site request failed. EMC is not needed for selected reference.

UX5406SA-BH71T-CB1Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026ASUS Store Canada listing UX5406SA-BH71T-CB, part number 90NB14F3-M006X0. It ships with a French bilingual keyboard. The reviewed units had the same hardware with other layouts.

GTIN / EAN

19594989026010Retailer pagedrazby.fs.gov.cz/handlers/Vyhlaska/4914Read 7 October 2026Directly read original maker-label digits for exact MC6T4LL/A Sky Blue base US package. UPC stored without spaces. MicroCenter and Best Buy independently corroborate. GlobalOffice Mexico exact-title listing prints 195949890147, contradicted by actual maker-label pixels. No serial or hardware-address field transcribed.13Retailer pagemicrocenter.com/product/692841/apple-macbook-air-13-mc6t4ll-a-(early-2025)-136-laptop-computer-sky-blueRead 7 October 2026Exact MC6T4LL/A Sky Blue, 10 CPU / 8 GPU / 16 GB / 256 GB, UPC 195949890260. Corroborates original package label.14Retailer pagebestbuy.com/product/apple-macbook-air-13-inch-laptop-apple-m4-chip-built-for-apple-intelligence-16gb-memory-256gb-ssd-sky-blue/6534644Read 7 October 2026Exact MC6T4LL/A and UPC 195949890260 corroborate original package label. No current store price imported.

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

5 March 20251Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026

Not available

Status

Discontinued15Press articleheise.de/en/news/Apple-tidies-up-Over-a-dozen-products-discontinued-11205485.htmlRead 7 October 2026Current status as of October 7, 2026. Later report explicitly says M4 models are no longer sold directly by Apple. Current new-product catalogue has only M5. Earlier March 3 Tom’s Guide claim that M4 stayed in lineup is older and does not establish current sale. Exact discontinuation day remains unresolved. Third-party clearance and Apple refurbished stock are separate.16Maker product pageapple.com/shop/buy-mac/macbook-airRead 7 October 2026Current first-party new MacBook Air catalogue read on October 7, 2026, all listed configurations are M5. Supports later explicit removal report. Retained old documentation and refurbished stock are not asserted to be current new-product lineup.

Available1Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026Listing with Add to Cart and most orders shipping within 24 hours.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Apple MacBook Air 13-inch (M3, 2024)17Reviewrtings.com/laptop/reviews/apple/macbook-air-13-m4-2025Read 7 October 2026Explicit model predecessor, existing apple-macbook-air-13-m3 record verified. No M3 measurement transferred.

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Apple MacBook Air 13-inch (M5, 2026)32Reviewrtings.com/laptop/reviews/apple/macbook-air-13-m5-2026Read 23 October 2026RTINGS says the MacBook Air 13 (M5, 2026) replaces the MacBook Air 13 (M4, 2025).

ASUS Zenbook S 14 (2026) UX5406AA6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Review links to the 2026 UX5406AA update with Panther Lake.8Reviewultrabookreview.com/74670-asus-zenbook-s14-gen2-reviewRead 23 October 2026Ultrabookreview treats the 2026 Zenbook S14 UX5406AA as the update of the previous Zenbook S14 UX5406SA generation.

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$9991Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026Pricing and Availability: base 13-inch starts at $999 in US, excluding sales tax. Education and later prices excluded.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€1,19918Press releaseapple.com/de/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 7 October 2026Maker German 13-inch base launch consumer price including VAT, all four finishes. Base hardware is the represented 10 CPU / 8 GPU / 16 GB / 256 GB, separately bound by maker tech sheet and board list. Regional euro launch price, not conversion of US MSRP or current discount. Education EUR 1069 excluded. Retained reference package remains US MC6T4LL/A.

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026

CA2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026ASUS Canada tech spec page for the UX5406 family.

ColoursiThe maker's own colour names

Sky Blue, Silver, Starlight, Midnight3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Zumaia Gray1Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026Zumaia Gray.

Segment

Ultrabook1Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026

Ultrabook4Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406Read 13 October 2026Maker calls it an ultra-slim Zenbook AI PC with a 1.19 cm slim design.

Form factor

Clamshell4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026

Clamshell4Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406Read 13 October 2026Clamshell laptop. The reviewer notes the lid opens to about 130 degrees.

Chassis

5 of 6 differ

DimensionsiClosed laptop body size. Minimum and maximum thickness describe the front and rear or other points stated by the maker.

Width304.1Depth215Thickness (max)11.3mm(12 × 8.5 × 0.4 in)3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Width310.3Depth214.7Thickness (min)11.9Thickness (max)12.9mm(12.2 × 8.5 × 0.5 in)2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 202631.03 x 21.47 x 1.19 ~ 1.29 cm.

Weight (published)iPublished laptop weight without the charger. A starting weight is identified in the source note and may vary with configuration.

1.24kg(2.7 lb)3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

1.2kg(2.6 lb)2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 20261.20 kg (2.65 lbs).

Lid material

Aluminium3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Materials: aluminium enclosure.

Other4Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406Read 13 October 2026Ceraluminum, a ceramic and aluminum fusion lid. No enum option fits, so other is stored. The bottom material is not stated.

Bottom material

Aluminium3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Materials: aluminium enclosure.

Not available

Max hinge angle

130°19Spec databasenanoreview.net/en/laptop/apple-macbook-air-13-m4-2025Read 7 October 2026Published non-measured physical opening angle. Current LaptopDecision 2025 table corroborates. Original M4 repair parts list has one display assembly per colour, shared across logic-board/GPU options. No old-generation measurement or clamshell-label inference.

130°6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026The screen only opens back to about 130 degrees.

MIL-STD-810 testing (claimed)iManufacturer claim of MIL-STD-810 testing. The revision and tested procedures belong in the source note. This is not proof of every standard test.

Not available

Yes2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026US MIL-STD 810H military-grade standard. Tests are not listed.

Display

14 of 25 differ

Screen sizeiDiagonal of the main built-in display. Rounded-corner displays may be measured as a full rectangle.

13.6in(34.5 cm)3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

14in(35.6 cm)2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 202614.0-inch.

Native resolution

2560 × 1664px3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

2880 × 1800px3Maker product pageasus.com/us/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026US tech spec for UX5406SA: 3K (2880 x 1800) OLED 16:10, 120Hz option. The Canada page calls the display 3K ASUS Lumina OLED.

Pixel density

224.5ppi=CalculatedFrom Screen size and Native resolution

242.6ppi=CalculatedFrom Screen size and Native resolution

Panel typeiDell's WVA means wide viewing angle and names no panel technology, so it is stored as IPS only when Dell or a review names IPS.

IPS3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

OLED3Maker product pageasus.com/us/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026OLED.

Backlight

Not available

None (self-emissive)6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026OLED panel, self-emissive.

Dimming zonesiIndependently controlled backlight zones, not the number of LEDs or screen pixels.

Not available

Not available

Panel part numberiPanel part number identified in a matching review unit. Suppliers may vary within the same laptop configuration.

Not available

Samsung ATNA40CU09-0 (SDC419D)6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Panel HardwareID Samsung SDC419D (ATNA40CU09-0) on the reviewed 3K UX5406SA with 120Hz. Panel suppliers can vary.

Screen surfaceiSurface of the stored display configuration. Anti-reflective coatings do not by themselves make a glossy display matte. A matte finish of the chassis is not the screen surface.

Glossy7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Model display specifications: glossy yes.

Glossy2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Glossy display.

Touchscreen

No17Reviewrtings.com/laptop/reviews/apple/macbook-air-13-m4-2025Read 7 October 2026Exact tested 10 CPU / 8 GPU / 16 GB / 256 GB public verdict explicitly states no touch input support. Protected result cells not accessed.20Certification listenergystar.gov/productfinder/product/certified-computers/details/4512697/export/pdf/downloadRead 7 October 2026Exact US A3240 16 GB row lists MC6T4 among base model identifiers. Touch Screen explicitly No. Matching RTINGS base review and Staples MC6T4LL/A table independently corroborate. Different 32 GB certificate and its power readings are not imported.

Yes2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Stylus

Not available

Supported2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026With stylus support. No stylus is listed in the box.

Refresh rate modesiHighest confirmed operating refresh rate of the built-in display at each resolution. Add a second row only for a documented dual-mode panel, not an ordinary supported timing.

AApple MacBook Air 13-inch (M4, 2025)

Width (px)	Height (px)	Maximum operating refresh (Hz)	VRR
2560	1664	60	No

Source7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Model specifications: IPS native 2560 x 1664 at 60 Hz. No external-display timing inferred.17Reviewrtings.com/laptop/reviews/apple/macbook-air-13-m4-2025Read 7 October 2026Public exact tested base-model verdict explicitly 60 Hz display and no VRR. Adds vrr=false to existing native 2560x1664/60Hz row. No external adaptive-sync support is denied by this built-in-panel fact. Protected measurement tables not accessed.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Width (px)	Height (px)	Maximum operating refresh (Hz)
2880	1800	120

Source2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Refresh Rate 120Hz. The resolution 3K (2880 x 1800) is listed on the US, global and UK spec pages. The 0.2ms response time is not stored because it is not named as gray-to-gray.

Max refresh rate

60Hz=CalculatedFrom Refresh rate modes

120Hz=CalculatedFrom Refresh rate modes

Adaptive synciNamed variable refresh technologies for the built-in display. Manual switching between 60Hz and 120Hz is not VRR.

Not available

Not available

Gray-to-gray response time (claimed)iManufacturer claim for a gray-to-gray pixel transition. Do not use generic response times, black-to-white values, or motion-picture response times.

Not available

Not available

Native panel colour depthiPhysical panel colour depth per channel. Do not infer native bit depth or FRC from the number of supported colours.

Not available

Not available

Brightness (SDR, claimed)iManufacturer typical SDR luminance. Outdoor maxima and an unspecified peak are not typical SDR brightness.

500nits3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

400nits2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026400nits.

Peak brightness (SDR outdoors, claimed)iManufacturer maximum SDR luminance explicitly claimed for outdoor use. Ambient light, automatic brightness and other stated conditions belong in the source note. Not typical SDR or HDR brightness.

Not available

Not available

Sustained brightness (HDR, claimed)iManufacturer explicitly sustained HDR luminance. Screen area, duration, temperature and other stated conditions belong in the source note. Not a brief peak or SDR luminance.

Not available

Not available

Peak brightness (HDR, claimed)iManufacturer peak luminance explicitly measured or claimed in HDR. Window size and duration belong in the source note.

Not available

500nits2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026500nits HDR peak brightness. Window size is not stated.

sRGB coverage (claimed)iManufacturer stated sRGB gamut percentage. The source note identifies coverage, volume, or an unspecified maker gamut claim.

Not available

Not available

DCI-P3 coverage (claimed)iManufacturer stated DCI-P3 gamut percentage. The source note identifies coverage, volume, or an unspecified maker gamut claim.

Not available

100%2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Adobe RGB coverage (claimed)iManufacturer stated Adobe RGB gamut percentage. The source note identifies coverage, volume, or an unspecified maker gamut claim.

Not available

Not available

HDR certification

Not available

DisplayHDR True Black 5002Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026VESA CERTIFIED Display HDR True Black 500.

Factory calibratediThe maker explicitly states factory colour calibration. Certification alone does not establish calibration.

Not available

Not available

Second display

Not available

Not available

Processor

10 of 14 differ

Processor

Apple M43Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Intel Core Ultra 7 258V2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Processor brand

Apple3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Intel2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Core configurationiProcessor core groups using the chip maker's names. MediaTek Big, Apple Super and AMD Zen architecture labels remain distinct from Intel P and E labels.

AApple MacBook Air 13-inch (M4, 2025)

Core type	Count	Core
Performance	4	Performance
Efficiency	6	Efficiency

Source3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Chip: 10-core M4 with four Performance and six Efficiency cores. No Apple super cores in this generation.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Core type	Count	Base clock (GHz)	Max clock (GHz)
Performance	4	2.2	4.8
Low-power efficiency	4	2.2	3.7

Source5Maker product pageintel.com/content/www/us/en/products/sku/240957/intel-core-ultra-7-processor-258v-12m-cache-up-to-4-80-ghz/specifications.htmlRead 13 October 20264 P-cores 2.2/4.8 GHz and 4 LP E-cores 2.2/3.7 GHz. Generic base 17 W and turbo 37 W are not the laptop limits.

CPU cores

10=CalculatedFrom Core configuration

8=CalculatedFrom Core configuration

Cores labelled performanceiCounts only rows classified as performance. Other labels, including Big, Super and AMD Zen architecture rows, are not included.

4=CalculatedFrom Core configuration

4=CalculatedFrom Core configuration

Cores labelled efficiencyiCounts only efficiency and low-power-efficiency rows. AMD Zen 5c and Apple super cores are not included.

6=CalculatedFrom Core configuration

4=CalculatedFrom Core configuration

ThreadsiMaximum hardware threads of the processor, including simultaneous multithreading where supported.

107Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026

85Maker product pageintel.com/content/www/us/en/products/sku/240957/intel-core-ultra-7-processor-258v-12m-cache-up-to-4-80-ghz/specifications.htmlRead 13 October 2026

Max boost clock

Not available

4.8GHz=CalculatedFrom Core configuration

L3 cacheiL3 cache only. Do not copy a combined L2 plus L3 cache total. Qualcomm's total cache, such as 30 MB on Snapdragon X, is not L3, even when a laptop maker labels it L3.

Not available

12MB5Maker product pageintel.com/content/www/us/en/products/sku/240957/intel-core-ultra-7-processor-258v-12m-cache-up-to-4-80-ghz/specifications.htmlRead 13 October 202612 MB Intel Smart Cache.

ProcessiProcess size class of the processor compute die in nm, as on CPUs: TSMC N3B is 3, Intel 7 is 10, Intel 4 is 7 and Intel 18A is 1.8. Marketing process names and other chiplet processes belong in the source note.

3nm8Press releaseapple.com/newsroom/2024/05/apple-introduces-m4-chipRead 7 October 2026Apple M4 uses second-generation 3 nm technology. The represented Air explicitly uses M4.

3nm5Maker product pageintel.com/content/www/us/en/products/sku/240957/intel-core-ultra-7-processor-258v-12m-cache-up-to-4-80-ghz/specifications.htmlRead 13 October 2026CPU Lithography listed as TSMC N3B.

Sustained CPU power (configured)iThis laptop's sustained configured CPU power limit, such as PL1. A chip manufacturer's generic base power is not the laptop setting.

Not available

28W6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Full Speed profile allows the hardware to run at about 28 W sustained after a short peak near 40 W.

Peak CPU power (configured)iThis laptop's configured short-duration CPU limit, such as PL2. Do not substitute generic processor maximum turbo power.

Not available

Not available

Combined CPU and GPU poweriMaker stated simultaneous CPU plus discrete-GPU budget for the exact configuration and power mode.

Not available

Not available

NPU performanceiNPU-only claimed operations per second. Excludes combined CPU, GPU and platform AI throughput. Precision belongs in the source note.

38TOPS8Press releaseapple.com/newsroom/2024/05/apple-introduces-m4-chipRead 7 October 2026M4 Neural Engine peak up to 38 trillion operations per second. Chip maker claim, not measured laptop sustained rate. Precision is not stated.

47TOPS2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Graphics

1 of 9 differ

Discrete GPUiA separate dedicated graphics processor is installed. Integrated or unified-memory graphics do not qualify.

No3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Only integrated M4 GPU is installed.

No2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

GPU

Not available

Not available

GPU brand

Not available

Not available

VRAMiDedicated video memory of the installed discrete GPU. Shared system memory is excluded.

Not available

Not available

Max GPU power (TGP)iMaximum configured discrete-GPU power including Dynamic Boost. Mode and any maker qualification belong in the source note.

Not available

Not available

Dynamic BoostiMaximum additional GPU power shifted from the CPU through NVIDIA Dynamic Boost. This is part of maximum TGP, not extra to it. A figure written as "up to 115W Dynamic Boost" is the total, so it goes in gpu_tgp_max_w.

Not available

Not available

GPU boost clockiHighest maker configured GPU boost clock, including factory overclock where explicitly stated. Mode belongs in the source note.

Not available

Not available

GPU switchingiExplicit GPU display-routing or power-sharing features. Advanced Optimus includes hardware display multiplexing.

Not available

Not available

Integrated GPU

Apple M4 8-core GPU3Maker product pagesupport.apple.com/en-us/122209Read 8 October 20268-core GPU base configuration. 10-core GPU upgrade excluded.

Intel Arc 140V2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Memory

4 of 9 differ

Installed RAMiTotal installed RAM in this product configuration, not the maximum purchase option.

16GB3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Standard 16 GB unified memory, paired with 256 GB SSD.

32GB2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 202632GB LPDDR5X Memory on Package. The same row also lists a 16GB option for other models.

RAM type

LPDDR5X7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Exact base 16 GB, Dual-Channel, onboard. The review writes LPDDR5-7500. LPDDR5 tops out at 6400 MT/s, so 7500 is the LPDDR5X rate. Stored as LPDDR5X, as for the 15-inch M4 Air.

LPDDR5X2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

RAM speediConfigured memory data rate in transfers per second. Do not treat the DRAM clock in MHz as the data rate.

7,500MT/s7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Exact base 16 GB LPDDR5-7500 published installed speed.

8,533MT/s6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Spec table: 32 GB LPDDR5-8533 (soldered). Intel lists LPDDR5X up to 8533 MT/s for the 258V.

Memory channelsiActive memory channels of the installed configuration, not the number of RAM modules or slots. One installed module is one channel. This holds for DDR5 too, whose two 32-bit subchannels on one module do not count as two channels. Soldered LPDDR memory counts in 64-bit units, so a 128-bit bus is 2 channels, even when a maker calls it quad-channel.

27Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Specifications explicitly says Dual-Channel.

Not available

RAM upgradeiWhether the installed RAM is soldered, socketed in slots, or a mixture. Purchase-time configurations are not upgrades.

Soldered7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Base 13-inch reviewer describes no maintenance options and onboard RAM.

Soldered2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Memory slotsiPhysical replaceable RAM module sockets grouped by type and occupancy. Clocked SO-DIMM uses CSODIMM. Soldered memory is excluded.

Not available

Not available

RAM slots

Not available

Not available

Free RAM slots

Not available

Not available

Maximum supported RAMiManufacturer supported maximum RAM, including purchase-time soldered options. Does not imply post-purchase upgradeability.

16GB12Spec databaseeverymac.com/systems/apple/macbook-air/specs/macbook-air-m4-10-core-cpu-8-core-gpu-13-2025-specs.htmlRead 7 October 2026Exact base page says 24 or 32 GB purchase configuration automatically changes GPU to 10 cores. Supports 16 GB maximum while retaining 8-core GPU. Generic Maximum RAM 32 GB table is qualified by that footnote.21Owner's manualsupport.apple.com/en-sg/121934Read 7 October 2026Retained 8-core GPU reference has 16 GB maximum. Complete maker board table lists only 16 GB / 256 GB with 8-core GPU. All 24/32 GB boards use 10-core GPU. EveryMac explicitly says adding RAM necessarily upgrades the GPU, so broader manufacturer family 32 GB is not assigned to this fixed GPU configuration. No post-purchase memory upgrade implied.

32GB2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Max total system memory up to 32GB.

Storage

7 of 7 differ

Installed storageiTotal advertised installed storage in decimal GB. Convert 1TB to 1000GB, without changing an explicitly published 512GB value.

256GB3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Standard 256 GB SSD. Alternative purchase capacities are not installed storage.

1TB2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Storage type

SSD (interface unspecified)3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

NVMe SSD2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Installed drive PCIe generationiPCIe generation of the installed drive. This may be lower than the slot capability.

Not available

42Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Storage slotsiPhysical storage connectors grouped by capability and occupancy. A slot accepting several drive lengths is one slot, not one per length.

AApple MacBook Air 13-inch (M4, 2025)

Not available

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Form factor	Interface	PCIe generation	PCIe lanes	Count	Occupied
M.2 2280	PCIe NVMe	4	4	1	Yes

Source2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Expansion slots row: 1x M.2 2280 PCIe 4.0x4 (includes used). The installed 1TB SSD uses it.

M.2 slots

Not available

1=CalculatedFrom Storage slots

Free storage slots

Not available

0=CalculatedFrom Storage slots

Maximum slot PCIe generation

Not available

4=CalculatedFrom Storage slots

Ports

2 of 7 differ

PortsiPhysical laptop connectors grouped by type, protocol capability and side. One connector with several protocols is counted once.

AApple MacBook Air 13-inch (M4, 2025)

Type	Version	Count	Side	Maximum data rate (Gbps)	Thunderbolt or USB4	DP Alt Mode
MagSafe	MagSafe 3	1	Left	Not available	Not available	Not available
USB-C	Thunderbolt 4 / USB 4 / DisplayPort 1.4	2	Left	40	Thunderbolt 4	Yes
3.5 mm audio	Not available	1	Right	Not available	Not available	Not available

Source3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Exact tech sheet names Thunderbolt 4 and USB4 at up to 40 Gb/s, plus native DisplayPort 1.4 output over USB-C. Existing two left USB-C connectors counted once each. Charging input maximum and peripheral output watts remain unstated, supplied/optional adapter ratings not substituted.4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026M4 tour: left MagSafe 3 and two Thunderbolt 4, right 3.5 mm audio.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Type	Version	Count	Side	Maximum data rate (Gbps)	Thunderbolt or USB4	DP Alt Mode
USB-C	Thunderbolt 4	2	Left	40	Thunderbolt 4	Yes
HDMI	HDMI 2.1 TMDS	1	Left	Not available	Not available	Not available
3.5 mm audio	Not available	1	Left	Not available	Not available	Not available
USB-A	USB 3.2 Gen 2	1	Right	10	Not available	Not available

Source2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 20262x Thunderbolt 4 with support for display and power delivery (up to 40Gbps), 1x USB 3.2 Gen 2 Type-A (up to 10Gbps), 1x 3.5mm combo audio jack. The HDMI 2.1 TMDS port is in the overview and on the US spec page. Sides from the Ultrabookreview review.

USB-C ports

2=CalculatedFrom Ports

2=CalculatedFrom Ports

Thunderbolt

Yes=CalculatedFrom Ports

Yes=CalculatedFrom Ports

Highest HDMI version

Not available

HDMI 2.1 TMDS=CalculatedFrom Ports

Card reader

No=CalculatedFrom Ports

No=CalculatedFrom Ports

Ethernet speed

Not available

Not available

Maximum USB-C charging inputiHighest confirmed charging power accepted by a USB-C port. This is separate from adapter rating and power delivered to peripherals.

Not available

Not available

Wireless

3 of 5 differ

Wi-Fi

Wi-Fi 6E3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Wi-Fi 72Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Wi-Fi bandsiSupported radio frequency bands. Availability may be restricted by country or regulatory configuration.

2.4 GHz, 5 GHz, 6 GHz3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Exact M4 family tech sheet explicitly Wi-Fi 6E. Separate maker networking document establishes 2.4 / 5 / 6 GHz bands and router/region conditions.22Maker product pagesupport.apple.com/en-nz/102285Read 7 October 2026Maker explains 6 GHz on Wi-Fi 6E clients with optional 2.4/5 GHz operation. Eligibility explicitly includes MacBook Air introduced in 2024 or later, and exact M4 tech sheet specifies Wi-Fi 6E. Supported three bands, subject to router/software and regional availability. No Wi-Fi 7 upgraded standard assigned.

2.4 GHz, 5 GHz, 6 GHz2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Wi-Fi 7 (802.11be) triple band 2*2.

Wi-Fi module

Broadcom 0x14E4 / 0x4388 WiFi 6E AirPort7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Exact base Specifications names Broadcom 0x14E4 / 0x4388 WiFi 6E AirPort.

Intel BE2016Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Intel BE201 module with Wi-Fi 7 and Bluetooth 5.4.

BluetoothiThe version as a number with one decimal, such as 5.4 or 6.0. A qualifier such as or above goes in the source note.

5.33Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

5.42Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Cellular

Not available

Not available

Keyboard and touchpad

6 of 8 differ

Keyboard layoutsiDocumented layouts of the retained regional SKUs. Do not infer a layout solely from the sales country.

US ANSI, ISO3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Not available

Key switches

Scissor23Owner's manualsupport.apple.com/en-sg/101268Read 7 October 2026Exact 13-inch M4 repair manual directly links this key exploded-view and scissor replacement procedure. Current M4 family scissor architecture, not assumed from Magic Keyboard branding. EveryMac M4 comparison and Ars firsthand review corroborate.24Owner's manualsupport.apple.com/en-sg/122003Read 7 October 2026Exact M4 repair manual Procedures links Keys Overview, which names scissor mechanism. Covers retained 13-inch generation and board configurations.

Not available

Keyboard backlightiA maker-confirmed backlight with no published type uses backlit_unspecified. Do not infer white lighting, a single colour or RGB from backlit alone. A single-zone RGB backlight is RGB zones.

Single colour25Spec databasee-catalog.co.uk/APPLE-MC6T4.htmRead 7 October 2026Explicit white keyboard lighting, therefore single colour. Exact page lists MC6T4LL/A among retained package codes. Maker Backlit Magic Keyboard corroborates illumination, with the secondary source supplying colour. No RGB inferred or claimed.

Single colour2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Backlit Chiclet Keyboard. The color is white per Ultrabookreview.

NumpadiDedicated physical numeric keypad. A virtual touchpad number pad is not counted.

No26Retailer pagestaples.ca/products/3114987-en-apple-macbook-air-13-m4-chip-256-gb-ssd-16-gb-unified-memory-sky-blue-englishRead 7 October 2026Explicit dedicated physical number pad absence for same US-coded Sky Blue base package. Maker 78-key US / 79-key ISO inventory and complete top view corroborate. Number row is not a dedicated keypad.

Not available

Key traveliPhysical key travel distance, not actuation distance.

1mm19Spec databasenanoreview.net/en/laptop/apple-macbook-air-13-m4-2025Read 7 October 2026Secondary published physical travel, not reviewer-measured actuation or a copied M3 test. Current M4 repair inventory uses common colour-specific top case 661-50063 Sky Blue for all CPU/GPU board options. No measurement method is published. No different value found in reliable current sources.

1.1mm2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 20261.1mm key travel.

Pointing stickiDedicated stick pointing device such as TrackPoint. A touchpad does not qualify.

No3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Complete current input inventory consists of 78/79-key Magic Keyboard with Touch ID and Force Touch trackpad. Matching full top view and repair inventory show all controls and no dedicated stick device. This is complete visible-control evidence, not an assumption from an unspecified pointing-device line.4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026Matching M4 complete top view labels keyboard, Touch ID, camera, microphone and Force Touch trackpad. No dedicated pointing stick in complete visible-control inventory.

Not available

Touchpad size

Not available

Not available

Touchpad mechanismiA clickpad or glass touchpad that clicks when pressed down is mechanical. Haptic needs a source that says haptic or force feedback.

Haptic5Owner's manualsupport.apple.com/en-gb/102309Read 5 October 2026Matching M4 tech sheet names Force Touch. Official Apple support says Force Touch trackpads provide haptic feedback and have no mechanical click when off.

Mechanical6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Large glass touchpad with physical clicks in the corners.

Camera and audio

5 of 7 differ

Webcam

12 MP Center Stage, 1080p video3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

FHD2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026FHD camera with IR function to support Windows Hello.

IR face loginiAn infrared camera suitable for Windows Hello face authentication. An ordinary webcam or fingerprint sensor does not qualify.

No19Spec databasenanoreview.net/en/laptop/apple-macbook-air-13-m4-2025Read 7 October 2026Explicit no infrared sensor, with fingerprint hardware separately marked Yes. Current M4 maker camera is 12 MP Center Stage and common colour-specific display assembly for all logic boards. IR face authentication is not supplied by Touch ID. No Windows driver compatibility inferred from macOS alone.

Yes2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Webcam privacy

Not available

None6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026No physical camera cover, no privacy shutter.

Built-in speaker driversiIndividual built-in acoustic drivers, including separate tweeters and woofers. Do not count audio channels or infer driver count from speaker assemblies.

43Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

41Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026Overview: four powerful speakers.

Total speaker poweriCombined published power of the built-in speaker drivers. RMS or peak classification belongs in the source note.

Not available

Not available

Audio features

Spatial Audio, Dolby Atmos, Voice Isolation microphone mode, Wide Spectrum microphone mode, Spatial Audio with dynamic head tracking using supported AirPods models3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Exact 13-inch model Audio section explicitly lists Voice Isolation and Wide Spectrum microphone modes, alongside Spatial Audio and Dolby Atmos. Dynamic head tracking requires supported AirPods, AirPods Pro or AirPods Max. It is not an unconditional built-in-speaker feature. No 15-inch speaker count or component measurement inherited.

Smart Amp Technology, Dolby Atmos, Harman Kardon tuning1Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026Four speakers tuned by Harman Kardon and Dolby Atmos. Smart Amp Technology is in the tech spec.

MicrophonesiPhysical built-in microphones, not beamforming channels or microphone modes.

33Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Not available

Battery and power

5 of 5 differ

Battery energyiPublished nominal energy capacity of the installed internal battery in watt-hours. Separate from measured runtime and charger output.

53.8Wh3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

72Wh2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Claimed battery lifeiManufacturer maximum runtime for each explicitly named test. Display brightness, configuration and other conditions belong in the source note. Wireless streaming preserves an unnamed content type and does not imply video or audio. Video conferencing requires an explicit calling test, with application and participant setup in the source note. MobileMark versions use different workloads, so compare only rows of the same version.

AApple MacBook Air 13-inch (M4, 2025)

Use case	Hours (h)
Video streaming	18
Web browsing	15

Source3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026Maker January 2025 test uses matching base 13-inch M4, 10-core CPU, 8-core GPU, 16 GB / 256 GB. Wi-Fi web 25 sites or 1080p streaming in Safari, display eight clicks from bottom and keyboard backlight off.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Not available

Adapter rated outputiNominal rated output of the documented supplied or recommended adapter. A temporary dynamic maximum belongs in the source note. Not the laptop charging-input limit.

30W3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026US base supplied 30 W adapter. Optional 70 W fast-charge adapter excluded from supplied rating.

65W2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026TYPE-C, 65W AC Adapter, 20V DC 3.25A.

Laptop charging connectoriConnector at the laptop end of the documented main charging cable, not the wall plug or adapter-end connector. HP's AC smart pin is a round DC plug, so it is barrel.

MagSafe3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

USB-C2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Charge 0 to 50 % (claimed)iManufacturer time to charge an empty battery to 50%. Adapter and powered-off conditions belong in the source note.

30min4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026Claim up to 50 percent in around 30 minutes requires optional 70 W USB-C adapter, not the supplied 30 W adapter.

Not available

Cooling

3 of 4 differ

FansiPhysical cooling fans inside the laptop. Excludes fans in external coolers and the power adapter.

01Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026Thin, light fanless design.

26Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Dual-fan, dual-radiator, vapor-chamber cooling module.

Vapor chamberiA vapor-chamber heat spreader is installed. Ordinary heatpipes alone do not qualify.

No19Spec databasenanoreview.net/en/laptop/apple-macbook-air-13-m4-2025Read 7 October 2026Explicit current model physical cooling classification. Apple documents fanless design and common M4 logic-board chassis, but fanless alone is not the negative premise. No contrary reliable source for this current 13-inch model found. Liquid metal list has no absence item, so no invented component row.

Yes6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Dual-fan, dual-radiator, vapor-chamber cooling module.

Liquid metaliComponents where the maker confirms liquid-metal thermal material. Ordinary thermal paste is excluded.

Not available

Not available

Power modesiPublished laptop operating modes and configured power limits. Do not place observed runtime power measurements in this table.

AApple MacBook Air 13-inch (M4, 2025)

Name
Automatic
Low Power Mode

Source27Maker product pagesupport.apple.com/en-asia/101613Read 7 October 2026Maker explicitly includes 13-inch M4 2025 in Low Power support. Automatic is factory default. High Power supported-model list excludes this fanless Air and no such mode is added. macOS/software availability applies, Sequoia 15.1 or later current enhancements documented. No watt limits inferred. This does not establish which mode a reviewer actually used.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Name
Full Speed
Performance
Standard
Whisper

Source6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026MyASUS profiles Full Speed, Performance, Balanced/Standard and Whisper. Reviewer states about 28, 24, 17 and 12 W sustained. Wattages are observed, so they are not stored in the table.

Security

2 of 4 differ

Fingerprint

Power button4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026Top illustration explicitly labels Touch ID as power button.

None6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026No finger sensor. The camera has IR for Windows Hello.

TPM

Not available

Not available

Remote management

Not available

Not available

Security lock slotiA dedicated built-in physical security-cable slot. Security locks that occupy a USB-C port do not qualify.

No4Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026Complete matching M4 exterior views and connector inventory show MagSafe 3, two USB-C ports and right headphone jack, with no dedicated physical cable-lock slot. Complete visible-control/port inventory scope. USB-C accessory locks are separate.

Not available

Software

2 of 3 differ

Operating system

macOS Sequoia1Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026Launch publication explicitly names macOS Sequoia.

Windows 11 Home2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

OS family

macOS3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Windows2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Security updates untiliPublished end date of OS/security updates promised for the exact device model. Preserve the source precision. Do not calculate it from years or substitute a generic OS-version lifecycle. Unknown when no device-specific promise is published.

Not available

Not available

Measured display

5 of 12 differ

Brightness (measured, centre)iReviewer center-point SDR luminance for the matching display configuration. Do not substitute a review average or unspecified measurement.

Not available

392.56nits6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Max brightness in the middle of the screen 392.56 cd/m2 on power. X-Rite i1 Display Pro.

Brightness (measured, average)iReviewer mean luminance across a documented display grid, normally nine points.

Not available

Not available

Contrast ratio (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

HDR peak brightness (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

sRGB coverage (measured)iReviewer measured sRGB coverage, not gamut volume. Instrument and method belong in the source note.

Not available

100%6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Coverage 100% sRGB, 94.5% Adobe RGB, 100% DCI-P3. X-Rite i1 Display Pro.

DCI-P3 coverage (measured)iReviewer measured DCI-P3 coverage, not gamut volume. Display P3 measurements are identified in the source note.

Not available

100%6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Coverage 100% DCI-P3. X-Rite i1 Display Pro.

Colour accuracy (measured Delta E)iReviewer colour error before calibration. Delta-E formula, colour space and picture mode belong in the source note.

Not available

0.217Measurementlaptopmag.com/laptops/windows-laptops/asus-zenbook-s-14-ux5406Read 13 October 2026Klein K-10A colorimeter: Delta-E accuracy 0.21. Formula and mode are not stated. The review also states 82% DCI-P3 coverage by its own method, which is not stored because it conflicts with the 100% from Ultrabookreview.

PWM flicker foundiWhether a reviewer detected pulse-width-modulation flicker under the documented test conditions. False does not prove all frequency ranges were tested.

Not available

Yes6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026PWM: Yes. The frequency is not given. The review says Flicker Free Dimming in MyASUS reduces the issue.

PWM frequency (measured)iDetected PWM frequency at the brightness setting stated by the reviewer.

Not available

Not available

PWM at or below brightnessiHighest display brightness setting at or below which the documented PWM is detected.

Not available

Not available

Response black to white (measured)iReviewer combined rise and fall response for black-to-white-to-black, with test conditions in the source note.

Not available

Not available

Response grey to grey (measured)iReviewer combined rise and fall response between specified grey levels. State the levels in the source note.

Not available

Not available

Measured performance

7 of 8 differ

Cinebench 2024 single-coreiMeasured by a reviewer, not claimed by the maker

173points9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Cinebench 2024 Single Core, 173 points. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Cinebench 2024 multi-coreiMeasured by a reviewer, not claimed by the maker

815points9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Cinebench 2024 Multi Core, initial 815 points. 30-minute 710-point sustained result is a different condition. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Geekbench 6 single-coreiMeasured by a reviewer, not claimed by the maker. Geekbench 6 only. Geekbench 5 and 7 use other scales, so their scores are not stored.

3,820points9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Geekbench 6.7 Single-Core, 3820 points. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Geekbench 6 multi-coreiMeasured by a reviewer, not claimed by the maker. Geekbench 6 only. Geekbench 5 and 7 use other scales, so their scores are not stored.

14,903points9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Geekbench 6.7 Multi-Core, 14903 points. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

3DMark Time Spy graphicsiMeasured by a reviewer, not claimed by the maker. Graphics score, not the overall score. A score the review does not label as graphics is left out.

Not available

4,116points6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Time Spy graphics 4116 on the Full Speed profile at 28 W, the highest MyASUS profile. Review software as of July 2025.

3DMark Steel NomadiMeasured by a reviewer, not claimed by the maker

716points9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 20263DMark Steel Nomad score 716 for matching Sky Blue M4 10 CPU / 8 GPU, 16 GB / 256 GB. Steel Nomad Light 3168 is a different test. macOS 15 Sequoia. Power mode is not named.

Not available

SSD sequential read (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Game frame ratesiMatching review-unit game results. Resolution, preset, upscaling, frame generation and ray tracing are stated only when documented.

AApple MacBook Air 13-inch (M4, 2025)

Game	Width (px)	Height (px)	Preset	Upscaling	Average FPS
Shadow of the Tomb Raider	1280	720	Lowest	Not available	103
Shadow of the Tomb Raider	1920	1080	Medium	Not available	39
Shadow of the Tomb Raider	1920	1080	High, AA: SMAA	Not available	34
Shadow of the Tomb Raider	1920	1080	Highest, AA: TAA	Not available	30
Baldur's Gate 3	1920	1080	Low, AA: SMAA	Not available	39.7
Baldur's Gate 3	1920	1080	Medium, AA: TAA	Not available	27.8
Baldur's Gate 3	1920	1080	High, AA: TAA	Not available	23.1
Baldur's Gate 3	1920	1080	Ultra, AA: TAA	Not available	22.6
Cyberpunk 2077	1920	1080	Low	FSR off	25.9
Cyberpunk 2077	1920	1080	Medium	FSR off	20.3
Cyberpunk 2077	1920	1080	High	FSR off	17
Cyberpunk 2077	1920	1080	Ultra	FSR off	14.3
Total War Pharaoh	1920	1080	Low	Not available	53.2
Total War Pharaoh	1920	1080	Medium	Not available	46.3
Total War Pharaoh	1920	1080	High	Not available	40.7
Total War Pharaoh	1920	1080	Ultra	Not available	28.7
Civilization 7	1920	1080	Low	Not available	98
Civilization 7	1920	1080	Medium, AA: MSAA	Not available	78.2
Civilization 7	1920	1080	High, AA: MSAA	Not available	62.9

Source9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Final game table: published resolutions, presets and AA retained. Cyberpunk FSR off. Unstated ray tracing, frame generation and 1% lows omitted. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Game	Width (px)	Height (px)	Preset	Upscaling	Average FPS	1 % low FPS
Dota 2	1920	1200	Best Looking	Not available	82	46
Far Cry 6	1920	1200	Low, TAA	Not available	52	38
Horizon Forbidden West	1920	1200	Very Low, TAA	Off	45	32
The Witcher 3: Wild Hunt	1920	1200	Low, TUAA	Not available	78	56

Source6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Full Speed profile (28 W), 1920x1200 on low settings, no upscaling stated except Off for Horizon. 1% lows as printed. Shadow of the Tomb Raider is not stored because its 1% low differs between two tables.

Measured noise and temperature

5 of 9 differ

Fan noise per modeiReviewer sound-pressure readings for the matching configuration and mode. Measurement distance and workload belong in the source note.

AApple MacBook Air 13-inch (M4, 2025)

Not available

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Power mode	Load	Noise (dB(A))
Full Speed	Max load	45
Performance	Max load	42
Standard	Max load	35

Source6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Expect about 45 dBA on Full Speed, 42 on Performance and 35 on Standard under CPU load. Whisper stays under 30 dBA. Distance not stated. Values are published with a tilde.

Max fan noiseiMeasured by a reviewer, not claimed by the maker

Not available

45dB(A)=CalculatedFrom Fan noise per mode

Fan noise while gamingiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Top surface under loadiMeasured by a reviewer, not claimed by the maker

44.9°C9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Stress-test top grid maximum 44.9 degrees Celsius, room 21.2. Fluke t3000FC and Voltcraft IR-900. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Bottom surface under loadiMeasured by a reviewer, not claimed by the maker

42.6°C9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Stress-test bottom grid maximum 42.6 degrees Celsius, room 21.2. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Palm rest under loadiMeasured by a reviewer, not claimed by the maker

34.2°C9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Stress-test palmrest and touchpad maximum 34.2 degrees Celsius, room 21.2. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

CPU temperature in stress testiMeasured by a reviewer, not claimed by the maker

Not available

Not available

CPU clock in stress testiMeasured by a reviewer, not claimed by the maker

Not available

Not available

GPU temperature while gamingiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Measured battery and power

7 of 10 differ

Battery runtime per testiReviewer runtime for the exact test and configuration. Mixed browsing, video and graphics workloads are classified as mixed use.

AApple MacBook Air 13-inch (M4, 2025)

Test	Brightness (nits)	Hours (h)
Wi-Fi browsing	150	16.22
Wi-Fi browsing	Not available	7.08

Source9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Wi-Fi 16h 13min at 150 nits and 7h 05min at maximum brightness. Minutes converted to hours and rounded to two decimals. Browser version is not stated. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

BASUS Zenbook S 14 (2024) UX5406SA-BH71T-CB

Test	Brightness (nits)	Hours (h)
Wi-Fi browsing	150	13.85
Productivity	Not available	16.35

Source7Measurementlaptopmag.com/laptops/windows-laptops/asus-zenbook-s-14-ux5406Read 13 October 2026Web surfing test at 150 nits 13:51. UL Procyon Office Productivity Battery Life 16:21, brightness not stated. Reviewed unit is the US 3K 258V 32GB 1TB model.

Wi-Fi browsing runtimeiMeasured by a reviewer, not claimed by the maker

16.22h=CalculatedFrom Battery runtime per test

13.85h=CalculatedFrom Battery runtime per test

Video runtimeiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Full charge time (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Power draw idleiHighest reviewer idle AC power reading for the matching configuration and test conditions.

8.8W9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Maximum idle wall reading 8.8 W. Review uses supplied 30 W adapter. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Power draw gamingiReviewer AC power draw during the named game and settings. Not GPU-only power.

18.5W9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Cyberpunk 2077 FHD Ultra, FSR off, 150 nits, average wall reading 18.5 W. Supplied 30 W adapter. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Power draw maxiMaximum reviewer AC input power during the documented load or stress test. Not the adapter rating.

30.8W9Measurementnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Maximum load wall reading 30.8 W. Supplied 30 W adapter briefly limits stress. This is not CPU configured power. Matching Sky Blue 13-inch M4, 10 CPU / 8 GPU, 16 GB / 256 GB, macOS 15 Sequoia. Power mode is not named.

Not available

Sustained CPU power (measured)iObserved sustained CPU package power during the documented test. Not the configured PL1 limit.

Not available

28W6Measurementultrabookreview.com/69717-asus-zenbook-s14-oled-reviewRead 13 October 2026Full Speed: stabilizes at 28 W in the Cinebench R15 loop with the laptop raised off the desk.

GPU power while gaming (measured)iObserved GPU-only power while running the documented game and settings.

Not available

Not available

Weight (measured)iReviewer measured laptop mass without its power adapter unless the source note explicitly states otherwise.

1.225kg(2.7 lb)7Reviewnotebookcheck.net/The-passively-cooled-M4-SoC-makes-the-competition-look-old-Apple-MacBook-Air-13-M4-base-model-review.1002534.0.htmlRead 5 October 2026Exact base reviewer measured 1.225 kg without 170 g adapter. Maker published weight 1.24 kg remains separate.

Not available

Certifications

4 of 6 differ

Intel EvoiManufacturer certification of the exact configuration as Intel Evo. Processor support alone does not establish certification.

Not available

Not available

Copilot+ PCiManufacturer identifies the configuration as Copilot+ PC. A Copilot keyboard key alone is insufficient.

No8Press releaseapple.com/newsroom/2024/05/apple-introduces-m4-chipRead 7 October 2026Existing M4 chip primary claim is Neural Engine up to 38 TOPS, precision unstated. Reference M4/macOS Sequoia configuration is separate from Microsoft Windows 11 Copilot+ class.28Maker product pagesupport.microsoft.com/en-us/surface/drivers-firmware/learn-more-about-copilot-pcs-and-windows-11-pcs-from-surfaceRead 7 October 2026Necessary conditions: Copilot+ is a Windows 11 PC class with 40+ NPU TOPS. Exact reference ships macOS Sequoia and Apple M4 claimed Neural Engine peak up to 38 TOPS. Apple does not state precision, so this is declared capability/class comparison, not a new precision-specific throughput claim. Native macOS and Apple Intelligence are not Copilot+ certification. Optional virtual-machine software is separate.

Not available

Colour certifications

Not available

PANTONE Validated2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

ENERGY STAR

Yes3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Not available

EPEAT

Gold29Certification listepeat.net/computers-and-displays-search-result/page-1/size-25Read 7 October 2026Exact 13-inch M4 United States registration is Gold, active certification registration. Active EPEAT status does not mean active manufacture or first-party new sales. Maker launch environmental report independently corroborates US Gold rating.30Maker spec sheet (PDF)apple.com/environment/pdf/products/notebooks/M4_MacBook_Air_PER_March2025.pdfRead 7 October 2026Maker March 2025 report explicitly EPEAT Gold, evaluated US configuration, with 13-inch 256 GB baseline. No factory/facility certification promoted to product certification.

Gold2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Ecolabels row: EPEAT Gold, RoHS, REACH.

Other certifications

FCC Part 15E31Regulatory filingfccid.io/BCGA3240Read 7 October 2026Exact A3240 hardware is identified on original US MC6T4LL/A package label. Reproduced FCC grant explicitly Certification and Part 15E for WLAN. This is a radio equipment authorization, not a company-wide/facility badge. No SAR or unrelated numerical power fields added. No Canadian or EU certificate assumed from other-market info sheet.

TÜV Rheinland-certified, SGS Eye Care Display2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026Display row: TÜV Rheinland-certified and SGS Eye Care Display on the UK, global and US pages. The Canada page lists TÜV Rheinland-certified.

In the box

2 of 2 differ

In the boxiAccessories confirmed for this exact SKU. Do not combine mutually exclusive regional bundles into one box.

13-inch MacBook Air, 30W USB-C Power Adapter, USB-C to MagSafe 3 Cable (2 m)3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026US base bundle. 8-core GPU supplied 30 W, not optional 35 W or 70 W.

Sleeve1Maker product pageeshop.asus.com/ca-en/90nb14f3-m006x0-asus-zenbook-s-14-ux5406.htmlRead 13 October 2026In the box: Sleeve.

Power adapter includediWhether a power adapter is included with this exact regional SKU. A supported or recommended adapter does not prove inclusion.

Yes3Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

Not available

Warranty

2 of 2 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year6Maker product pageapple.com/legal/warranty/products/embedded-mac-warranty-us.htmlRead 7 October 2026US One-Year Limited Warranty for Mac products, April 22, 2022 to present. Statutory rights and refurbished warranty prices excluded.

Not available

Warranty serviceiDocumented manufacturer warranty service for the named market. Included paid service upgrades belong in the source note.

Carry-in, Mail-in6Maker product pageapple.com/legal/warranty/products/embedded-mac-warranty-us.htmlRead 7 October 2026US Mac limited-warranty service options explicitly include carry-in at Apple Retail/AASP and mail-in when Apple determines eligibility. Apple chooses one or more options, so both are documented routes rather than a guarantee of every route in every location. Mail-in uses prepaid waybill/customer shipment, not guaranteed staffed collection. Optional paid AppleCare or on-site service is not imported. The third DIY-parts option has no enum and remains report-only.

Not available

Links

Not compared

Product page

www.apple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-color1Press releaseapple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-colorRead 5 October 2026

www.asus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux54064Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406Read 13 October 2026

Spec sheet

support.apple.com/en-us/1222093Maker product pagesupport.apple.com/en-us/122209Read 8 October 2026

www.asus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspec2Maker product pageasus.com/ca-en/laptops/for-home/zenbook/asus-zenbook-s-14-ux5406/techspecRead 13 October 2026

Manual

support.apple.com/guide/macbook-air/apd7e765329d/2025/mac/154Owner's manualsupport.apple.com/guide/macbook-air/apd7e765329d/2025/mac/15Read 7 October 2026

Not available

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Both are also in the API. Back to all laptops.