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ASUS ROG Swift PG279QM vs Dell Alienware AW2521H

Product A: ASUS

ROG Swift PG279QM

86 of 172 known
Change ASUS ROG Swift PG279QM

Compare the Dell Alienware AW2521H with

Product B: Dell

Alienware AW2521H

106 of 172 known
Change Dell Alienware AW2521H

Compare the ASUS ROG Swift PG279QM with

77 of 164 fields differ

Download CSVDownload JSON
  • 37 different values
  • 40 known for one only
  • 34 the same
  • 53 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Refresh rateA: 240HzB: 360HzDell is 120 Hz higher.
  2. Pixel densityA: 108.8ppiB: 89.9ppiASUS is 18.9 ppi higher.
  3. Brightness (typical, SDR)A: 350nitsB: 400nitsDell is 50 nits higher.

Refresh rate per resolution

The best rate over any port. Bars run from 0 to 1200 Hz.

2560 × 1440Native for A
A240Hz
BNot listed
1920 × 1080Native for B
ANot listed
B360Hz

Size, drawn to scale

Front and side. Solid lines show the stand at its lowest. Dashed lines show it at its highest.

Weight

0 to 15 kg

Weight with stand
A8.1kg
B8.1kg
Weight without stand
A4.5kg
B4.5kg
Box weight
A11.7kg
B12.3kg

All 172 fields

Every value links to where we found it.

AASUS ROG Swift PG279QM
BDell Alienware AW2521H

General

5 of 8 differ
Series
ROG Swift1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Alienware1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Model numbers
PG279QM1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
AW2521H, AW2521Hb1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026Exact marketing and regulatory models independently read on own original guide cover.2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own exact cover marketing/regulatory model names, not inferred from a sibling suffix.
GTIN / EAN
Not available
8841163833697Retailer pagegamestop.com/pc-gaming/monitors/pc/products/alienware-aw2521h-25-in-fhd-1920x1080-360hz-1ms-g-sync-compatible-gaming-monitor/311805.htmlRead 7 October 2026Exact AW2521H new US retail reference. European EAN 5397184409541 not asserted for the US package. Refurbished Best Buy GSRF code 400064571209 excluded.
Announced
Not available
13 May 20205Press articleengadget.com/alienware-area-51-m15-m17-aurora-140007085.htmlRead 7 October 2026Original exact model preview on May 13, 2020. First public announcement, distinct from October pricing and November retail. Maker original May blog not recovered. May 18 TFTCentral article is later coverage.
Status
Not available
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
Not available
$899.994Press articlenotebookcheck.net/Alienware-announces-pricing-and-availability-for-its-new-gaming-monitors.497409.0.htmlRead 7 October 2026Original October 8, 2020 maker launch-price announcement reported by Notebookcheck. Exact 24.5-inch 360 Hz AW2521H. Independent same-day Tom’s Hardware launch report agrees. Subsequent sale prices excluded. Original maker page no longer exposes launch price.
Launch price (EU)
Not available
Not available
Markets
Not available
US, EU, AU, JP, CN4Press articlenotebookcheck.net/Alienware-announces-pricing-and-availability-for-its-new-gaming-monitors.497409.0.htmlRead 7 October 2026Original launch availability explicitly names these markets for November 2020. This records markets in which model was sold, not present stock. Japan actual maker release was December 2, 2020, later than the forecast. China already independently verified in original release source. Exact shared AW2521H model, not an AW2521HF regional SKU. China October 2020 availability also explicitly stated in same launch report.
Colours
Black2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Dark Side of the Moon6Maker product pagedell.com/en-uk/shop/alienware-25-gaming-monitor-aw2521h/apd/210-ayclRead 7 October 2026Exact AW2521H maker colour. Lunar Light belongs to AW2521HFL 240 Hz, not this model. Matching global panel and housing reference, UK cable/warranty not transplanted.
Segment
Gaming1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Gaming1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026

Display

9 of 12 differ
Screen size
27in(68.6 cm)1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
24.5in(62.2 cm)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Viewable screen diagonal
27in(68.6 cm)1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
24.5in(62.2 cm)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Native resolution
2560 × 1440px1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
1920 × 1080px2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Aspect ratio
16:91Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
16:92Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Pixel density
108.8ppi
89.9ppi
Pixel pitch
0.2331mm2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own manual 0.2331 mm in both axes. Current maker active-width 596.4 mm does not match this at stated precision, so active-area dimensions remain omitted instead of guessing a typo correction.
0.2829mm2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own horizontal pitch 0.2829 mm. Separate vertical pitch 0.2802 mm is not put into this scalar. Active dimensions and pixel count agree at published precision.
Active display area
Not available
Width543.2Height302.6mm(21.4 × 11.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Curved
No1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact maker genuine front and side geometry show a flat panel.
No8Retailer pagenewegg.com/black-dell-alienware-aw2521h-24-5/p/0JC-0004-00SV8Read 7 October 2026Exact AW2521H 360 Hz retailer table explicitly Flat Panel. No curvature radius zero inferred.
Curvature radius
Not available
Not available
Screen surface
Not available
Matte10Reviewpcmonitors.info/dell/dell-alienware-aw2521h-360hz-full-hd-ips-modelRead 7 October 2026Exact AW2521H descriptive source, consistent with maker anti-glare 3H. No named coating replacement.
Anti-reflection coating
Anti-Glare1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Anti-glare with 3H hardness2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Touchscreen
Not available
No9Retailer pagesenetic.co.uk/product/GAME-AW2521HRead 7 October 2026Exact GAME-AW2521H retailer table. Other template values conflicting with maker not adopted.

Panel

9 of 31 differ
Panel type
Fast IPS1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Fast IPS2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Panel type (as published)
Fast IPS1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Fast IPS2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Backlight
Edge-lit LED5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Exact Variable Backlight discussion states edge array in a zone-dimming configuration.
Edge-lit LED2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Local dimming
Yes5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Exact review explicitly identifies zone dimming. Number of independent zones is not stated, so omitted. Measured HDR contrast with dimming is not native panel contrast.
No11Reviewrtings.com/monitor/reviews/dell/alienware-aw2521hRead 7 October 2026Own tested exact AW2521H public HDR verdict explicitly has no local dimming. Maker Variable Backlight changes whole backlight intensity. It is dynamic/global backlight control, not independent local zones. DisplayNinja independently agrees. No zone count zero inferred.
Dimming zones
Not available
Not available
Panel maker
Not available
AU Optronics10Reviewpcmonitors.info/dell/dell-alienware-aw2521h-360hz-full-hd-ips-modelRead 7 October 2026Exact AW2521H supplier explicitly named. AHVA is IPS-like AUO technology, not VA. Exact part number and panel generation not published.
Panel part number
Not available
Not available
Panel generation
Not available
Not available
Subpixel layout
Not available
Not available
Colour depth
8bits5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026
8bits10Reviewpcmonitors.info/dell/dell-alienware-aw2521h-360hz-full-hd-ips-modelRead 7 October 2026Exact native panel statement. Supported high-bit input is not native 10-bit. DisplaySpecifications independently says 8 bits with FRC No. Epey 6-bit+FRC row is inconsistent with these specialist sources and appears template contamination.
Colour depth method
Native5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Exact review native-depth table explicitly 8-bit, consistent with maker 16.7 million colours. Manual accepted 12-bit processing input does not establish a 12-bit panel.
Native10Reviewpcmonitors.info/dell/dell-alienware-aw2521h-360hz-full-hd-ips-modelRead 7 October 2026Same explicit true 8-bit panel claim. Does not derive bits from 16.7 million displayed colours.
Displayable colours
16.7 million1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Maker 16.7M normalized to 16.7 million. Accepted higher-bit-depth input is separate from panel colour depth.
16.7 million2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
sRGB coverage
Not available
99%2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own 99% sRGB claim. CIE basis is unstated.
DCI-P3 coverage
97%1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact maker 97% DCI-P3 coverage. CIE basis is unstated. Separate 150% sRGB volume is not coverage.
Not available
Adobe RGB coverage
Not available
Not available
Rec. 2020 coverage
Not available
Not available
NTSC coverage
Not available
Not available
Factory calibrated
Yes2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own manual box report and maker accessories explicitly identify colour pre-calibration report. No unstated Delta E target is stored.
Yes15Reviewdisplayninja.com/dell-alienware-aw2521h-reviewRead 7 October 2026Exact descriptive calibration claim. Maker existing calibration accuracy target is ΔE2000 <1.5 average. Review measurement can vary and remains separate. No paper report claim inferred.
Claimed Delta E
Not available
1.52Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own average Delta E 2000 < 1.5 alongside sRGB 99% colour claim. Preset and detailed test conditions are unstated. This maker calibration target is not a reviewed colour-error result.
Paper calibration report in box
Yes2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own Package Contents explicitly lists physical color calibration testing report. It is not an electronic report in software.
Not available
Hardware calibration support
Not available
Not available
Static contrast ratio
1,000:11Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
1,000:12Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Brightness (typical, SDR)
350nits1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
400nits2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Brightness (maker minimum)
Not available
Not available
Peak brightness (HDR)
400nits1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact maker HDR peak 400 nits. Window, duration and mode are unstated.
Not available
HDR peak test window
Not available
Not available
Full-screen brightness
Not available
Not available
HDR formats
HDR102Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
HDR102Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
HDR certification
DisplayHDR 4001Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Not available
Viewing angle (horizontal)
178°1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
178°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Viewing angle (vertical)
178°1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
178°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026

Refresh rate and motion

12 of 22 differ
Refresh rate per resolution and port
AASUS ROG Swift PG279QM
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.0DisplayPort 1.4
2560 × 1440Native144Hz8-bit, 4:4:4240Hz8-bit, 4:4:4
Source4Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own supported-operating table accepts native DP 240 Hz at RGB/YUV444 or YUV422 8-bit, and HDMI 144 Hz at RGB/YUV444 8-bit or YUV422 12-bit. Maker input ceilings 240 Hz DP and 144 Hz HDMI establish those maxima. Native HDMI 60 Hz at RGB/YUV444 12-bit is merely a supported timing, so its unproved format-specific maximum is omitted. Accepted 12-bit input is not native 12-bit panel depth. Other maxima and DSC are not inferred.
BDell Alienware AW2521H
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.0DisplayPort 1.4
1920 × 1080Native240Hz360Hz
Source2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own Resolution Specifications explicitly maximum native resolution at the stated DP and HDMI rates. Bit depth, chroma, DSC and lower-resolution maxima are unproved and omitted.
Max refresh rate
240Hz
360Hz
Max refresh rate at native resolution
240Hz
360Hz
Max refresh rate over DisplayPort
240Hz
360Hz
Max refresh rate over HDMI
144Hz
240Hz
Max refresh rate over USB-C
Not available
Not available
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
240Hz2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
360Hz2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Overclocked refresh rate
Not available
Not available
Dual mode
Not available
Not available
Minimum fixed refresh rate
Not available
Not available
Adaptive sync technologies
G-SYNC, Adaptive-Sync1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Native G-SYNC module is directly stated in maker feature page. Adaptive-Sync AMD compatibility is independently tested, without FreeSync certification inferred.
G-SYNC2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own Product Features names the native NVIDIA tier. Generic scan intervals are not actual VRR ranges, and AMD compatibility or certification is not borrowed from similar models.
VRR range per port
Not available
Not available
Low framerate compensation
Yes5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Reviewer actually tested AMD/FreeSync-compatible operation at 48-240 Hz with LFC. This does not imply FreeSync certification.
Not available
Response time (maker GtG claim)
1ms1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Own maker and manual fastest GtG claim 1 ms. Review introductory 2 ms specification conflicts and is not a measured response value.
1ms2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own fastest maker GtG 1 ms in Extreme, with potential visible artifacts. Super Fast 2 ms and Fast 3 ms are separate settings.
Response time (maker MPRT claim)
Not available
Not available
Overdrive settings
Off, Normal, Esports, Extreme2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own Gaming OD menu explicitly lists Off, Normal, Esports and Extreme.
Fast, Super Fast, Extreme2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Motion blur reduction
No5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Exact review expressly states no ULMB blur-reduction option. No unsupported BFI mechanism inferred.
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own NVIDIA ULMB paragraph supports only direct DisplayPort at fixed 144 or 240 Hz, not through a dongle/hub. It is not the normal 360 Hz operating mode.
Blur-reduction technology
Not available
NVIDIA ULMB2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Blur reduction works with VRR
Not available
No2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own NVIDIA ULMB paragraph expressly requires Enable G-SYNC not selected in NVIDIA Control Panel.
Flicker-free (claimed)
Yes1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Black frame insertion
Not available
Not available

Measured

4 of 12 differ
Input lag at maximum refresh rate
Not available
Not available
Input lag at 60 Hz
Not available
Not available
Average response time (measured)
Not available
Not available
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
Not available
890.4:118Measurementtomshardware.com/reviews/alienware-aw2521h-360hz-monitor/2Read 7 October 2026Own exact AW2521H review uncalibrated maximum-backlight static white/black ratio, Custom Color mode per page 3 methodology, Variable Backlight off. Separate approximately 1300:1 dynamic and 918.9:1 ANSI excluded. Linked methodology full-field white/black patterns and ratio. LaptopMedia 1040:1 in Standard mode is a different picture condition, not silent replacement.
SDR brightness (measured)
326nits7Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-review/3Read 5 October 2026Stock uncalibrated maximum backlight white luminance 326 nits in article text, chart 326.1266. Picture stimulus/window, input and firmware are unstated. Contradictory contrast versus its white/black readings is not stored. Linked lag methodology includes mouse/PC path, and response draw time is not mean GtG, so those separate unsuitable results are not stored.
440nits17Measurementlaptopmedia.com/review/alienware-aw2521hRead 7 October 2026Own AW2521H June 20, 2022 lab review: maximum white luminance at screen centre in Standard SDR mode. NVIDIA RTX 2060 display connection. Test-window percentage and meter model not named in public prose, not fabricated. Tom’s Hardware Custom Color sample just over 460 and Quasar 464.1 under different/unstated settings are not interchangeable maker replacements.
HDR brightness in a real scene (measured)
Not available
Not available
PWM flicker frequency (measured)
Not available
Not available
VRR range (measured)
Min48Max240Hz5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Reviewer-tested AMD/FreeSync-compatible interval 48-240 Hz with LFC. Input and firmware are not restated. Separate introductory native G-SYNC 1-240 Hz table is not merged into this AMD measurement.
Not available
Colour accuracy (measured Delta E)
1.318Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-review/4Read 5 October 2026Racing default SDR sRGB before user calibration, mean colour Delta E 2000 1.31 in article, chart 1.3116. This is colour-patch error, distinct from grayscale 2.05, post-calibration 0.34 and wide Rec.2020 2.03. Firmware/input are not restated.
2.433419Measurementtomshardware.com/reviews/alienware-aw2521h-360hz-monitor/3Read 7 October 2026Exact own AW2521H uncalibrated first colour chart explicitly reads Color Gamut - Standard, default and Avg dE2000 2.4334, with CIE1976 u′v′ geometry and sRGB reference. Specific chart identifies Standard/default, while generic prose says testing and calibration in Custom Color. This mode-label discrepancy is retained, not silently resolved. Out-of-box state is independently explicit in the adjacent text. Post-calibration 1.50 and grayscale 3.11 excluded.
Gray uniformity (measured)
Not available
Not available
Reflections (measured)
Not available
Not available

Connectivity

6 of 19 differ
Video inputs
AASUS ROG Swift PG279QM
TypeVersionCount
DisplayPort1.41
HDMI2.03
Source1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact model has one DP 1.4 and three HDMI 2.0 sockets, not the similar-looking earlier PG279Q inventory.
BDell Alienware AW2521H
TypeVersionCount
DisplayPort1.41
HDMI2.02
Source2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
HDMI ports
3
2
DisplayPort ports
1
1
Highest HDMI version
2.0
2.0
Highest DisplayPort version
1.4
1.4
HDMI features
Not available
Not available
USB-C video (DP Alt Mode)
No2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own complete physical inventory has no USB-C socket.
No2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no USB-C socket.
USB-C power delivered
Not available
Not available
Thunderbolt
Not available
Not available
USB upstream ports
AASUS ROG Swift PG279QM
ConnectorUSB versionCount
USB-B3.01
Source2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own user-accessible Type-B upstream host path. The connector labelled for service personnel only is not a user hub upstream path.
BDell Alienware AW2521H
ConnectorUSB versionCount
USB-B3.2 Gen 11
Source2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
USB downstream hub ports
AASUS ROG Swift PG279QM
ConnectorUSB versionCount
USB-A3.02
Source2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own specifications summary states two total peripheral ports. Red Reflex Analyzer mouse port is included, not an extra third socket. Manual USB 3.0 and current maker 3.2 Gen 1 labels refer to the listed Gen 1-speed peripheral ports.
BDell Alienware AW2521H
ConnectorUSB versionCount
USB-A3.2 Gen 14
Source2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own total four peripheral Type-A sockets, including one charging socket. Charging and Reflex functions do not add sockets.
KVM switch
Not available
Not available
Daisy chain (MST)
Not available
Not available
Ethernet
No2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own complete physical inventory has no Ethernet socket.
No2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no Ethernet socket.
3.5 mm headphone output
Yes1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own headphone port is separate from rear line-out, which explicitly does not support headphones.
3.5 mm microphone input
No2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own technical table Audio Input No, and complete inventory has headphone output only.
No2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete physical inventory has analog output sockets only, with no microphone input.
Optical out
No2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own complete physical inventory has no optical audio output.
No2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no optical audio socket.
Picture in picture
Not available
No13Revieweftm.com/2021/03/review-alienware-aw2521h-gaming-monitor-207972/ampRead 7 October 2026Own exact AW2521H hands-on explicitly no multi-input PIP/PBP support. Consistent with complete maker OSD feature inventory.
Picture by picture
Not available
No13Revieweftm.com/2021/03/review-alienware-aw2521h-gaming-monitor-207972/ampRead 7 October 2026Same explicit sentence. Resolution switching does not mean simultaneous sources.

Smart features

None of 4 known
Smart platform
Not available
Not available
Wi-Fi
Not available
Not available
Bluetooth
Not available
Not available
Remote control
Not available
Not available

Audio and camera

3 of 5 differ
Speakers
Yes1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
No12Reviewtomshardware.com/reviews/alienware-aw2521h-360hz-monitorRead 7 October 2026Exact 360 Hz AW2521H table and physical review state no internal speakers. No speaker count or per-channel power zero stored.
Number of speakers
21Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Not available
Speaker power per channel
2W1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact maker two 2 W speakers, rating is per channel.
Not available
Webcam
Not available
Not available
Microphone
Not available
Not available

Ergonomics and controls

7 of 15 differ
Stand height adjustment
100mm2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
130mm2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Tilt
Forward5°Backward20°2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Forward5°Backward21°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Swivel
Left25°Right25°2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Left20°Right20°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Pivot
Not available
Counterclockwise90°Clockwise90°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Removable stand
Yes2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
VESA mount
100 x 1002Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
100 x 1002Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
VESA adapter needed
Not available
No14Owner's manualm.media-amazon.com/images/I/C1BEKAl2z0L.pdfRead 7 October 2026Maker VESA wall mounting page 36: remove stand and four plastic-cover screws, then directly attach compatible wall mounting bracket with specified M4 screws. No proprietary adapter required. Optional wall bracket is separate from adapter.
Security lock slot
Yes2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
On-screen menu controls
Joystick, Buttons2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Joystick, Buttons2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Desktop software
Armoury Crate (Aura Sync)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own Aura section expressly names Armoury Crate as the desktop program. Aura Sync controls RGB lighting only. Software display-OSD control is not proved.
Alienware Command Center (AWCC)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own AWCC/AlienFX section controls LED lighting effects. It does not establish software control of the display OSD.
User firmware updates
Not available
Not available
Ambient light sensor
Yes2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own Front/Side View item 6 explicitly labels the physical ambient light sensor. This is separate from human presence sensing.
Yes14Owner's manualm.media-amazon.com/images/I/C1BEKAl2z0L.pdfRead 7 October 2026Maker-authored AW2521H/AW2521Hb 2022 user guide. OSD page 52 explicitly says the ambient light sensor automatically adjusts backlight brightness, default Off and disabled for HDR. Physical presence is separately named by the maker reviewer sheet. Dell-hosted PDF routes were unavailable, and this public authentic guide mirror was downloaded and read independently.
Presence sensor
Not available
Not available
RGB lighting
Yes1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Yes2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own AlienFX section explicitly supports RGB colour codes and effects across physical lighting zones.
Gaming menu features
GamePlus, GameVisual, Crosshair, Timer, Stopwatch, FPS Counter, Display Alignment, Dark Boost, NVIDIA Reflex Latency Analyzer2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own GamePlus and G-SYNC Processor menus. Reflex PC+Display latency is a system metric and not a reviewed monitor-only lag field.
Timer, Frame Rate, Display Alignment, Dark Stabilizer, NVIDIA Reflex Latency Analyzer2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own Reflex Latency Analyzer is a system-latency feature, not a monitor-only measured-lag value.

OLED care

None of 3 known
OLED care
Not available
Not available
Burn-in covered by warranty
Not available
Not available
Burn-in warranty length
Not available
Not available

Dimensions and weight

5 of 7 differ
Dimensions with stand
Width614Height (lowest)408Height (highest)508Depth255mm(24.2 × 16.1 to 20 × 10 in)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own technical table expressly labels lowest 408 and highest 508 mm complete display height. Difference agrees with 100 mm travel.
Width556.3Height (lowest)421.2Height (highest)526.1Depth251.9mm(21.9 × 16.6 to 20.7 × 9.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete display width/depth are direct. Height endpoints come from the maker guide mirror listed below, which labels the overall envelope separately from the 130 mm panel travel.14Owner's manualm.media-amazon.com/images/I/C1BEKAl2z0L.pdfRead 7 October 2026Maker guide page 19 explicitly labels overall with-stand height: extended 526.1 mm, compressed 421.2 mm. Separate stand-only heights are 436.8/421.2 mm, and panel travel is separately 130 mm. Main approved literal overall endpoints without forcing their difference to equal panel travel.
Dimensions without stand
Width614Height367Depth90mm(24.2 × 14.4 × 3.5 in)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Width556.3Height328.2Depth84.4mm(21.9 × 12.9 × 3.3 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Stand footprint
Not available
Width465.2Depth251.9mm(18.3 × 9.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own physical table stand width 465.2 mm and depth 251.9 mm, separate from panel-body width.
Weight with stand
8.1kg(17.9 lb)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own estimated Net with supplied stand.
8.1kg(17.9 lb)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own weight with stand assembly and cables.
Weight without stand
4.5kg(9.9 lb)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own estimated weight without stand.
4.5kg(9.9 lb)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own no-stand/no-cable weight for VESA considerations.
Box dimensions
Width719Height267Depth542mm(28.3 × 10.5 × 21.3 in)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own W x H x D 719 x 267 x 542 mm package orientation, also matching maker page axes.
Not available
Box weight
11.7kg(25.8 lb)2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own estimated Gross packaged weight.
12.3kg(27.1 lb)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own packaged weight.

Power

12 of 13 differ
Power supply
External adapter2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Internal2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Adapter rating
120W2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own adapter rated output 20 V, 6 A, whose product is 120 W. This is adapter capacity, not screen electrical consumption.
Not available
Input voltage
100-240 V AC, 50/60 Hz2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Maker full input 100-240 V at 50/60 Hz. Manual AC 100-240 V and DC 20 V/6 A identify external adapter.3Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026Exact US maker full AC 100-240 V, 50/60 Hz input.
100-240 V AC, 50/60 Hz2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Power use (typical)
Not available
21.232W2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own Pon uses the Energy Star reference method. Separate EU on-mode value is not substituted for this claim.
Power use (max)
Not available
83W2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own maximum brightness/contrast with maximum loading on all USB ports.
Power use SDR (EU label)
Not available
19.1W2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own electrical on-mode value as defined in EU 2019/2021 and 2019/2013, separate from Energy Star Pon.
Power use HDR (EU label)
Not available
18.3W21EU energy label (EPREL)eprel.ec.europa.eu/api/product/364442/fichesRead 7 October 2026Exact AW2521H EU fiche row 6. EU label HDR on-mode test power, not US typical or peak consumption. Same model identifier and SDR 19.1, standby 0.4/off 0.3 agree original/current maker guide. No EU warranty or support term added.
Standby power
Not available
0.4W2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Off-mode power
Not available
0.3W2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
EU energy class SDR
Not available
E21EU energy label (EPREL)eprel.ec.europa.eu/api/product/364442/fichesRead 7 October 2026Exact AW2521H EU2019/2013 energy classification under EU registration364442. Regional regulatory test scope.
EU energy class HDR
Not available
E21EU energy label (EPREL)eprel.ec.europa.eu/api/product/364442/fichesRead 7 October 2026Exact AW2521H EU2019/2013 HDR classification. No automatic conversion from power.
Energy per 1000 h SDR
Not available
19kWh22EU energy label (EPREL)eprel.ec.europa.eu/api/product/364442/labelsRead 7 October 2026Original exact AW2521H EU energy label, upper SDR value 19 kWh per 1000 h, class E. Public label downloaded, extracted and visually checked. Not calculated from 19.1 W fiche.
Energy per 1000 h HDR
Not available
18kWh22EU energy label (EPREL)eprel.ec.europa.eu/api/product/364442/labelsRead 7 October 2026Original exact AW2521H EU energy label lower HDR value 18 kWh per 1000 h, class E. Not calculated from 18.3 W fiche. Regional regulatory test scope, no EU warranty/support terms.

Certifications

1 of 9 differ
VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Flicker-Free, Low Blue Light1Maker product pagerog.asus.com/us/monitors/27-to-31-5-inches/rog-swift-pg279qm-model/specRead 5 October 2026
Not available
Low blue light
Software2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own Blue Light Filter selectable levels reduce the blue component. Generic TÜV Low Blue Light certification is not a hardware-solution claim.
Software2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own ComfortView preset reduces blue emission through software setting. No unproved hardware-solution certification is inferred.
ENERGY STAR
Not available
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Not available
Not available
Other certifications
Not available
Not available

In the box

2 of 2 differ
In the box
LCD monitor, Monitor base, Quick start guide, Warranty card, Power adapter, Power cord, DisplayPort cable, HDMI cable, USB cable, Input/output port cover, Color calibration testing report, ROG welcome card with envelope, ROG sticker2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026
Display, Stand riser, Stand base, I/O cover, Power cable (varies by country), DisplayPort to DisplayPort cable, Mini DisplayPort to DisplayPort cable, USB 3.2 Gen 1 upstream cable, Quick setup guide, Safety, Environmental and Regulatory Information, Alienware welcome card2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own exact Package Contents. Optional market items and power cable can vary. HDMI cable is not listed and electrical cable description explicitly says not included.
Cables included
AASUS ROG Swift PG279QM
TypeCount
Power cordNot available
DisplayPort cable1
HDMI cable1
USB cable1
Source2Owner's manualdlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PG279QM/PG279QM_English.pdfRead 5 October 2026Own mandatory Package Contents names each cable. Exact review box discussion explicitly confirms one each of DP, HDMI and USB cables. Power-cord count and all lengths remain unstated.5Reviewtomshardware.com/reviews/asus-rog-swiftpg279qm-reviewRead 5 October 2026Exact box discussion expressly says one each of DisplayPort, HDMI and USB cables.
BDell Alienware AW2521H
TypeCount
Power cable1
DisplayPort to DisplayPort cable1
Mini DisplayPort to DisplayPort cable1
USB 3.2 Gen 1 upstream cable1
Source2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own package table pictures/lists one each. Lengths are preserved only where this exact guide states them.

Warranty

2 of 2 differ
Manufacturer warranty (source market)
Not available
3years1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026Exact US maker limited hardware warranty 3 years, with region-specific service terms.
Dead pixel policy
Not available
Premium Panel Exchange: zero bright pixels/subpixels. Up to 5 dark subpixels and up to 5 combined defects allowed.16Maker product pagedell.com/support/kbdoc/en-us/000126004/dell-display-pixel-guidelinesRead 7 October 2026Exact current Dell US premium-panel table covers all Alienware except listed newer exceptions, none AW2521H. Exact original AW2521H reviewer sheet independently bundles Premium Panel Exchange with 3-year Advanced Exchange Service. Defect thresholds apply during warranty. Partial subpixel anomalies excluded under policy. Bright pixels and dark subpixels distinguished.

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