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Dell Alienware AW2521H vs ViewSonic XG2431

Product A: Dell

Alienware AW2521H

106 of 172 known
Change Dell Alienware AW2521H

Compare the ViewSonic XG2431 with

Product B: ViewSonic

XG2431

95 of 172 known
Change ViewSonic XG2431

Compare the Dell Alienware AW2521H with

81 of 164 fields differ

Download CSVDownload JSON
  • 44 different values
  • 37 known for one only
  • 33 the same
  • 50 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Power use (max)Lower is betterA: 83WB: 52WViewSonic is 31 W lower.
  2. Refresh rateA: 360HzB: 240HzDell is 120 Hz higher.
  3. Standby powerLower is betterA: 0.4WB: 0.5WDell is 0.1 W lower.
  4. Brightness (typical, SDR)A: 400nitsB: 350nitsDell is 50 nits higher.

Refresh rate per resolution

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

3840 × 2160
ANot listed
B60Hz
1920 × 1080Native for both
A360Hz
B240Hz

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
B6.8kg
Weight without stand
A4.5kg
B3.5kg
Box weight
A12.3kg
B8.6kg

All 172 fields

Every value links to where we found it.

ADell Alienware AW2521H
BViewSonic XG2431

General

6 of 8 differ
Series
Alienware1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Elite8Press articletftcentral.co.uk/news/viewsonic-announce-range-of-new-monitors-in-their-elite-gaming-line-up-including-xg320u-xg320q-xg271qg-and-xg2431Read 10 October 2026TFTCentral news item groups the XG2431 in ViewSonic's Elite gaming line-up, from the CES 2021 announcement.
Model numbers
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.
XG2431, VS185333Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Cover page: Model No. VS18533, P/N XG2431.
GTIN / EAN
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.
Not available
Announced
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.
11 January 20218Press articletftcentral.co.uk/news/viewsonic-announce-range-of-new-monitors-in-their-elite-gaming-line-up-including-xg320u-xg320q-xg271qg-and-xg2431Read 10 October 2026TFTCentral news of 11 January 2021 reports the CES 2021 announcement via Business Wire.
Status
Not available
Available1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Current maker product page lists the model with its full specification table. No end-of-life notice on the page.
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
$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.
Not available
Launch price (EU)
Not available
Not available
Markets
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.
US, CA4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Review says it is released in the USA and Canada and not in the UK or Europe.
Colours
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.
Not available
Segment
Gaming1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Gaming1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Maker title: gaming monitor.

Display

7 of 12 differ
Screen size
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
24in(61 cm)1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Display Size (in.): 24. Viewable area is 23.8 in.
Viewable screen diagonal
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
23.8in(60.5 cm)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Viewable Area (in.): 23.8. The user guide table also says 24.5 in, but its active area of 527.04 x 296.46 mm gives a 23.8 in diagonal.
Native resolution
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
1920 × 1080px2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Resolution: 1920 x 1080.
Aspect ratio
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
16:92Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Aspect Ratio: 16:9.
Pixel density
89.9ppi
91.8ppi
Pixel pitch
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.
0.2745mm3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Specifications table: 0.2745 mm horizontal and vertical. The product page rounds it to 0.275 mm.
Active display area
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
Width527.04Height296.46mm(20.7 × 11.7 in)3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Specifications table: Display Area, Full Scan (H x V).
Curved
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.
No2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Curvature: Flat.
Curvature radius
Not available
Not available
Screen surface
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.
Matte2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Surface Treatment: Anti-Glare, Hard Coating (3H). Anti-glare is mapped to matte.
Anti-reflection coating
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
Anti-Glare, Hard Coating (3H)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Surface Treatment, verbatim.
Touchscreen
No9Retailer pagesenetic.co.uk/product/GAME-AW2521HRead 7 October 2026Exact GAME-AW2521H retailer table. Other template values conflicting with maker not adopted.
Not available

Panel

9 of 31 differ
Panel type
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
Fast IPS1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Overview: Fast-IPS display. TFTCentral also calls it a Fast IPS panel.
Panel type (as published)
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
IPS Technology2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Panel Type row, verbatim.
Backlight
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
Edge-lit LED5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026Spec table: IPS / W-LED, edge array. The maker states only a LED light source.
Local dimming
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.
No4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026HDR Gaming section: no backlight local dimming.
Dimming zones
Not available
Not available
Panel maker
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.
BOE4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Response Times and Gaming section. PC Monitors also names the BOE MV238FHM-NG2.
Panel part number
Not available
MV238FHM-NG24Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Response Times and Gaming section: panel from BOE (MV238FHM-NG2).
Panel generation
Not available
Not available
Subpixel layout
Not available
RGB stripe3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Specifications table: Color Filter, RGB vertical stripe.
Colour depth
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.
8bits2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Color Space Support: 8 bit true.
Colour depth method
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.
Native2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Maker says 8 bit true. Tom's Hardware lists 8-bit (6-bit+FRC) and TFTCentral says an 8-bit panel with FRC for 10-bit input, so the panel method differs between sources.7Reviewdisplayninja.com/viewsonic-xg2431-reviewRead 10 October 2026Specifications: 16.7 million colors, true 8-bit.
Displayable colours
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
16.7 million2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Colors: 16.7M.
sRGB coverage
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.
Not available
DCI-P3 coverage
Not available
Not available
Adobe RGB coverage
Not available
Not available
Rec. 2020 coverage
Not available
Not available
NTSC coverage
Not available
Not available
Factory calibrated
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.
Not available
Claimed Delta E
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.
Not available
Paper calibration report in box
Not available
Not available
Hardware calibration support
Not available
Not available
Static contrast ratio
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
1,000:12Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Static Contrast Ratio: 1,000:1 (typ). The 80M:1 dynamic figure is not used.
Brightness (typical, SDR)
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
350nits2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Brightness: 350 cd/m2 (typ).
Brightness (maker minimum)
Not available
Not available
Peak brightness (HDR)
Not available
Not available
HDR peak test window
Not available
Not available
Full-screen brightness
Not available
Not available
HDR formats
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
HDR102Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026High Dynamic Range: HDR10.
HDR certification
Not available
DisplayHDR 4001Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Key features: Fast-IPS display with VESA DisplayHDR 400.
Viewing angle (horizontal)
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
178°2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Viewing Angles: 178 horizontal.
Viewing angle (vertical)
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
178°2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Viewing Angles: 178 vertical.

Refresh rate and motion

11 of 22 differ
Refresh rate per resolution and port
ADell 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.
BViewSonic XG2431
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI DisplayPort 1.4
3840 × 216060HzNot available
1920 × 1080Native240Hz240Hz
Source2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Input Signal: vertical frequency 48 to 240 Hz on HDMI and DisplayPort. The user guide lists 1920 x 1080 at 240 Hz as the recommended mode and Tom's Hardware says 240 Hz works over both inputs. TFTCentral says a virtual 4K input is accepted and limited to 4K at 60 Hz over HDMI. Bit depth, chroma and DSC are not stated.
Max refresh rate
360Hz
240Hz
Max refresh rate at native resolution
360Hz
240Hz
Max refresh rate over DisplayPort
360Hz
240Hz
Max refresh rate over HDMI
240Hz
240Hz
Max refresh rate over USB-C
Not available
Not available
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
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
240Hz2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Refresh Rate (Hz): 240.
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-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.
FreeSync Premium, G-SYNC Compatible2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Variable Refresh Rate Technology: FreeSync Premium, G-Sync compatible. TFTCentral and Tom's Hardware say it was not yet NVIDIA certified when reviewed in 2022, and G-Sync works over DisplayPort.
VRR range per port
ADell Alienware AW2521H
Not available
BViewSonic XG2431
InputMin (Hz)Max (Hz)
DisplayPort48240
HDMI48240
Source5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026Tom's Hardware: FreeSync runs from 48 to 240 Hz and works over either interface. TFTCentral confirms 48 to 240 Hz and FreeSync over HDMI.
Low framerate compensation
Not available
Yes4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Review: range of 48 to 240 Hz supported with LFC. PC Monitors also lists a 48 to 240 Hz VRR range plus LFC.
Response time (maker GtG claim)
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.
1ms2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Response Time (Typical GTG): 1 ms.
Response time (maker MPRT claim)
Not available
0.5ms1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Overview: The <0.5ms MPRT response time. Published as less than 0.5 ms.
Overdrive settings
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
Standard, Advanced, Ultra Fast3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026OSD menu tree, Manual Image Adjust, Response Time.
Motion blur reduction
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.
Yes1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026PureXP motion blur reduction feature, Blur Busters Approved 2.0.
Blur-reduction technology
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
PureXP3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026OSD Setup Menu: PureXP with Light, Normal, Extreme and Ultra settings. TFTCentral calls it PureXP+.
Blur reduction works with VRR
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.
No4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Blur Busters Approved 2.0 section: PureXP+ cannot be used at the same time as VRR, and FreeSync must be switched off first.
Flicker-free (claimed)
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
Yes2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Flicker-Free: Yes. TFTCentral found no PWM at any brightness setting.
Black frame insertion
Not available
Not available

Measured

5 of 12 differ
Input lag at maximum refresh rate
Not available
2ms4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Lag section: total display lag 2.0 ms. The text does not name the refresh rate. TFTCentral tests the native refresh rate, here 240 Hz. Firmware and input are not stated.
Input lag at 60 Hz
Not available
Not available
Average response time (measured)
Not available
4.3ms4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Response Times and Gaming section: average G2G of 4.3 ms in Ultra Fast overdrive at 240 Hz, against 5.2 ms in Advanced mode. TFTCentral's gamma-corrected method.
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
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.
900:14Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Default Setup: about 900:1 at default settings and maximum brightness.
SDR brightness (measured)
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.
356nits4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Default Setup: about 356 cd/m2 at 100 percent brightness out of the box.
HDR brightness in a real scene (measured)
Not available
Not available
PWM flicker frequency (measured)
Not available
Not available
VRR range (measured)
Not available
Not available
Colour accuracy (measured Delta E)
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.
1.14Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Default Setup: sRGB colour accuracy average dE 1.1 at factory settings, before calibration, ICC profiles disabled.
Gray uniformity (measured)
Not available
Not available
Reflections (measured)
Not available
Not available

Connectivity

10 of 19 differ
Video inputs
ADell 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
BViewSonic XG2431
TypeVersionCount
HDMINot available2
DisplayPort1.41
Source2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Connector: HDMI x2 and DisplayPort x1. The page says HDMI 2.1 and DisplayPort 1.4. DisplayPort 1.4 is also listed by DisplayNinja, while Tom's Hardware says 1.2 and TFTCentral believes 1.2a. HDMI 2.0 is stated by TFTCentral, Tom's Hardware and DisplayNinja, and TFTCentral confirms there is no HDMI 2.1 feature. The HDMI version is left out because the maker and the reviewers conflict.
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.0
Not available
Highest DisplayPort version
1.4
1.4
HDMI features
Not available
Not available
USB-C video (DP Alt Mode)
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.
No4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Design and Features: no USB type-C is provided.
USB-C power delivered
Not available
Not available
Thunderbolt
Not available
Not available
USB upstream ports
ADell 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
BViewSonic XG2431
ConnectorUSB versionCount
USB-B3.21
Source2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Connector: USB 3.2 Type B Up Stream x1.
USB downstream hub ports
ADell 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.
BViewSonic XG2431
ConnectorUSB versionCount
USB-A3.22
Source2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Connector: USB 3.2 Type A Down Stream x2.
KVM switch
Not available
No4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026General Usage: lists a KVM switch as a missing feature.
Daisy chain (MST)
Not available
Not available
Ethernet
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.
Not available
3.5 mm headphone output
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.
Yes2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Connector: 3.5mm Audio Out x1.
3.5 mm microphone input
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.
Not available
Optical out
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.
Not available
Picture in picture
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.
Not available
Picture by picture
No13Revieweftm.com/2021/03/review-alienware-aw2521h-gaming-monitor-207972/ampRead 7 October 2026Same explicit sentence. Resolution switching does not mean simultaneous sources.
Not available

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
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.
Yes2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Internal Speakers: 3 Watts x 2.
Number of speakers
Not available
22Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Internal Speakers: 3 Watts x 2.
Speaker power per channel
Not available
3W2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Internal Speakers: 3 Watts x 2.
Webcam
Not available
Not available
Microphone
Not available
Not available

Ergonomics and controls

9 of 15 differ
Stand height adjustment
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
Not available
Tilt
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
Forward5°Backward15°3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Using the Monitor: tilt -5 to 15 degrees.
Swivel
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
Left90°Right90°5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026Hands-on text: 90 degrees swivel to either side. The datasheet lists Swivel: 90.
Pivot
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
Counterclockwise0°Clockwise90°2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Pivot (Right/Left): 90 / 0.
Removable stand
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
Yes3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Wall Mounting: remove the monitor stand.
VESA mount
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
100 x 1003Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Wall Mounting: 100 x 100 mm hole pattern, M4 x 10 mm screws, 14 kg maximum load.
VESA adapter needed
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.
No3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Wall Mounting: the bracket attaches directly to the VESA holes after the stand is removed.
Security lock slot
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
Yes2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Kensington Lock Slot: 1.
On-screen menu controls
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
Buttons3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Five control keys and a power key on the lower bezel.
Desktop software
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.
ViewSonic Strobe Utility4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Blur Busters Approved 2.0 section quotes the optional ViewSonic Strobe Utility, a download for tuning PureXP+.
User firmware updates
Not available
Not available
Ambient light sensor
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.
Not available
Presence sensor
Not available
Not available
RGB lighting
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.
No5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026Hands-on text: no lighting feature.
Gaming menu features
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.
FPS Game, RTS Game, MOBA Game, Black Stabilization3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026ViewMode presets and the Manual Image Adjust menu. TFTCentral says there are no crosshair or FPS counter options.

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

7 of 7 differ
Dimensions with stand
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.
Width540Height (lowest)434.1Height (highest)520.1Depth239mm(21.3 × 17.1 to 20.5 × 9.4 in)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Physical (mm): 540 x 434.1~520.1 x 239. The user guide gives 539.8 x 520.1 x 239.2.
Dimensions without stand
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
Width540Height323Depth49mm(21.3 × 12.7 × 1.9 in)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Physical Without Stand (mm): 540 x 323 x 49.
Stand footprint
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.
Not available
Weight with 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.
6.8kg(15 lb)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Weight (metric) Net: 6.8 kg. The user guide also says 6.8 kg.
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.
3.5kg(7.7 lb)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Net Without Stand: 3.5 kg.
Box dimensions
Not available
Width698Height400Depth185mm(27.5 × 15.7 × 7.3 in)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Dimensions Packaging (mm): 698 x 400 x 185.
Box 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.
8.6kg(19 lb)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Weight Gross: 8.6 kg.

Power

10 of 13 differ
Power supply
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
Internal2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Power Supply: Internal Power Supply.
Adapter rating
Not available
Not available
Input voltage
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
100-240 V AC, 50/60 Hz3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Specifications table: AC 100-240V, 50/60Hz (auto switch).
Power use (typical)
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.
Not available
Power use (max)
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.
52W2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Consumption (max): 52 W.
Power use SDR (EU label)
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.
Not available
Power use HDR (EU label)
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.
Not available
Standby power
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
0.5W2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Stand-by: 0.5 W.
Off-mode power
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
0.5W3Owner's manualviewsonicglobal.com/public/products_download/user_guide/display/XG2431/XG2431_UG_ENG.pdfRead 10 October 2026Power saving modes, Off: < 0.5 W. Published as less than 0.5 W.
EU energy class SDR
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.
Not available
EU energy class HDR
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.
Not available
Energy per 1000 h SDR
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.
Not available
Energy per 1000 h HDR
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.
Not available

Certifications

1 of 9 differ
VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Not available
Not available
Low blue light
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.
Software2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Low Blue Light: Software solution.
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
Blur Busters Approved 2.0, cTUVus, FCC-B, ICES003, CEC, TUV S-Mark, NOM, Mexico Energy, CE, CE EMC, CB, RoHS, ErP, REACH, WEEE, EAC, UkrSEPRO, RCM, GEMS, VCCI, PSE, KC, K-MEPS, BIS2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Regulations row, verbatim. Blur Busters Approved 2.0 comes from the maker product page, where it is listed as the first monitor to pass the program.

In the box

2 of 2 differ
In the box
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.
XG2431 x1, 3-pin Plug (IEC C13 / CEE22) x1, DisplayPort Cable (v1.2, Male-Male) x1, USB A/B Cable (v3.2, Male-Male) x1, Quick Start Guide x12Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Package Contents, verbatim. The user guide says cables may vary by country.
Cables included
ADell 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.
BViewSonic XG2431
TypeCount
3-pin Plug (IEC C13 / CEE22)1
DisplayPort Cable (v1.2, Male-Male)1
USB A/B Cable (v3.2, Male-Male)1
Source2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Package Contents.

Warranty

1 of 2 differ
Manufacturer warranty (source market)
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.
3years5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026US review spec table: 3 years. The maker page says the warranty differs from market to market.
Dead pixel policy
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.
Not available

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