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Dell Alienware AW2521HF vs ViewSonic XG2431

Product A: Dell

Alienware AW2521HF

83 of 172 known
Change Dell Alienware AW2521HF

Compare the ViewSonic XG2431 with

Product B: ViewSonic

XG2431

95 of 172 known
Change ViewSonic XG2431

Compare the Dell Alienware AW2521HF with

74 of 164 fields differ

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

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Standby powerLower is betterA: 0.3WB: 0.5WDell is 0.2 W lower.
  2. Power use (max)Lower is betterA: 72WB: 52WViewSonic is 20 W lower.
  3. 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
A240Hz
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
A7.46kg
B6.8kg
Weight without stand
A4.15kg
B3.5kg
Box weight
A11.72kg
B8.6kg

All 172 fields

Every value links to where we found it.

ADell Alienware AW2521HF
BViewSonic XG2431

General

5 of 8 differ
Series
Alienware1Maker product pagedell.com/support/product-details/en-us/product/dell-aw2521hf-monitor/overviewRead 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
AW2521HF, AW2521HFb1Maker product pagedell.com/support/product-details/en-us/product/dell-aw2521hf-monitor/overviewRead 5 October 2026Exact marketing and regulatory names independently checked on original manual cover. HFL colour variant and later HFA regional model are not merged.2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own original guide cover expressly lists marketing AW2521HF and regulatory AW2521HFb. The paired HFL variant is separately identified and not merged into this record.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Not available
Not available
Announced
Not available
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
Dell Alienware AW2523HF7Reviewrtings.com/monitor/reviews/dell/alienware-aw2523hfRead 23 October 2026RTINGS says the Alienware AW2523HF replaces the Alienware AW2521HF.
Not available
Launch price (US)
Not available
Not available
Launch price (EU)
Not available
Not available
Markets
Not available
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 Moon2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own Product Features explicitly assigns Dark Side of the Moon to AW2521HF. Lunar Light belongs to AW2521HFL and is not a second HF colour.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Segment
Gaming1Maker product pagedell.com/support/product-details/en-us/product/dell-aw2521hf-monitor/overviewRead 5 October 2026
Gaming1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026Maker title: gaming monitor.

Display

6 of 12 differ
Screen size
24.5in(62.2 cm)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
0.2832mm2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own horizontal pitch 0.2832 mm. Vertical 0.2802 mm is distinct and does not share this scalar. Explicit active dimensions agree at maker precision.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Width543.744Height302.616mm(21.4 × 11.9 in)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
No4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact front/side model photographs show a flat panel.
No2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Curvature: Flat.
Curvature radius
Not available
Not available
Screen surface
Matte4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact coating discussion identifies matte anti-glare display surface.
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 (Haze 25%, 3H hard coating)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own exact A03 December 2020 guide specifies anti-glare treatment of the front polarizer, Haze 25% and 3H hard coating.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Exact anti-glare front-polarizer treatment, Haze 25% and 3H hard coating.
Anti-Glare, Hard Coating (3H)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Surface Treatment, verbatim.
Touchscreen
Not available
Not available

Panel

11 of 31 differ
Panel type
Fast IPS2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Not available
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
Not available
No4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026HDR Gaming section: no backlight local dimming.
Dimming zones
Not available
Not available
Panel maker
AU Optronics4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026
BOE4Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Response Times and Gaming section. PC Monitors also names the BOE MV238FHM-NG2.
Panel part number
M250HAN01.74Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact reviewed AUO M250HAN01.7 AHVA panel. No later HFA regional hardware revision is inferred.
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
8bits4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026
8bits2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Color Space Support: 8 bit true.
Colour depth method
Native4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact review explicitly states true 8-bit without dithering. Own manual literal 16.78 million colour count is retained.
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
16.78 million2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own manual typical 99% sRGB coverage. CIE reference is unstated.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Not available
Not available
Claimed Delta E
Not available
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Not available
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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

9 of 22 differ
Refresh rate per resolution and port
ADell Alienware AW2521HF
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.0DisplayPort 1.2
1920 × 1080Native240Hz240Hz
Source2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own Resolution Specifications expressly gives maximum native 1920 x 1080 at 240 Hz for DP 1.2 and HDMI 2.0, not just timing presets. Bit depth, chroma and compression remain unproved.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
240Hz
240Hz
Max refresh rate at native resolution
240Hz
240Hz
Max refresh rate over DisplayPort
240Hz
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
240Hz2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Adaptive-Sync, FreeSync Premium, G-SYNC Compatible2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20264Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact review verifies DP 1.2 and HDMI 2.0 Adaptive-Sync for AMD FreeSync at native 240 Hz. G-SYNC Compatible mode works only over DP. Generic protocol is separate from certification.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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 AW2521HF
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own fastest maker GtG claim 1 ms in Extreme, which can cause visible artifacts. Super Fast 2 ms and Fast 4 ms are separate.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
No4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact responsiveness conclusion expressly says no strobed backlight mode.
Yes1Maker product pageviewsonic.com/global/products/lcd/XG2431Read 10 October 2026PureXP motion blur reduction feature, Blur Busters Approved 2.0.
Blur-reduction technology
Not available
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
Not available
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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

6 of 12 differ
Input lag at maximum refresh rate
2.63ms4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026SMTT 2.0 with a sensitive camera and over 30 repeated readings at 240 Hz gives total display lag 2.63 ms, including pixel response. This is not processing-only delay. Active Adaptive-Sync lag could not be accurately measured. Exact firmware and lag input are not restated.
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
6.47ms4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Same SMTT 2.0 total-display-lag method gives 6.47 ms at 60 Hz, including pixel response. Input and firmware are not restated. Active VRR lag was unmeasured.
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)
Not available
900:14Measurementtftcentral.co.uk/reviews/viewsonic-xg2431Read 10 October 2026Default Setup: about 900:1 at default settings and maximum brightness.
SDR brightness (measured)
405nits4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Review central white luminance 405 nits at 100% OSD brightness and otherwise factory defaults. SpyderX Elite and X-Rite i1Display Pro Plus are used, with over two hours warmup and 240 Hz Windows setting, without an added ICC profile. Exact window/APL and firmware are unstated.
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)
Not available
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

9 of 19 differ
Video inputs
ADell Alienware AW2521HF
TypeVersionCount
DisplayPort1.21
HDMI2.02
Source2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
1.2
1.4
HDMI features
Not available
Not available
USB-C video (DP Alt Mode)
No2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no USB-C socket.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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 AW2521HF
ConnectorUSB versionCount
USB-B3.01
Source2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 AW2521HF
ConnectorUSB versionCount
USB-A3.04
Source2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own four USB-A peripheral sockets, including one BC1.2 charging port at up to 2 A. Charging does not add a fifth socket.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no Ethernet socket.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
3.5 mm headphone output
Yes2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own headphone output is separate from rear speaker line-out, which expressly does not support headphones.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Yes2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Connector: 3.5mm Audio Out x1.
3.5 mm microphone input
No2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own complete physical inventory has headphone/line analog outputs but no microphone input.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Optical out
No2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own complete physical inventory has no optical output.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Picture in picture
Not available
Not available
Picture by picture
Not available
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
No5Press article4gamer.net/games/092/G009238/20200313054Read 5 October 2026Exact launch specifications explicitly no integrated speakers. Original maker launch release is reproduced below the report.
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Tilt
Forward5°Backward21°2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Not available
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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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, Buttons, Software2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20263Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide2_en-us.pdfRead 5 October 2026Own exact Dell Display Manager guide provides direct brightness, contrast and preset controls. This proves software monitor settings beyond desktop window placement. AWCC lighting alone is not the proof.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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) and Dell Display Manager (DDM)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own AWCC/AlienFX section controls lighting. Display Manager compatibility is separately named and its exact guide proves direct monitor image controls.3Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide2_en-us.pdfRead 5 October 2026Own exact Dell Display Manager guide names DDM and establishes direct monitor image controls. Own original user guide separately names Alienware Command Center for AlienFX lighting.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Not available
Not available
Presence sensor
Not available
Not available
RGB lighting
Yes2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own AlienFX lighting zones allow RGB colour codes and multiple colours, not only an ordinary power LED.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
No5Reviewtomshardware.com/reviews/viewsonic-xg2431-reviewRead 10 October 2026Hands-on text: no lighting feature.
Gaming menu features
Timer, Frame Rate, Display Alignment, Dark Stabilizer2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Width556.29Depth251.92mm(21.9 × 9.9 in)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own width and depth are direct. Height endpoints are omitted because published extended/compressed difference 104.87 mm differs from the stated 130 mm travel. Neck/body pose scope is unresolved.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Width556.29Height328.24Depth72.95mm(21.9 × 12.9 × 2.9 in)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Width465.3Depth251.92mm(18.3 × 9.9 in)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own supplied stand width 465.3 mm and depth 251.92 mm. No inferred rectangular area.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Weight with stand
7.46kg(16.4 lb)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own physical table with stand assembly and cables.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Exact later edition states stand assembly and cables 7.46 kg.
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
4.15kg(9.1 lb)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Exact A03 December 2020 manual publishes 4.15 kg without stand or cables. Earlier manual and launch claims 3.55 kg, and reviewed unit 3.54 kg, conflict. A hardware revision or weight-scope explanation is unproved, so no cause is inferred.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Exact later edition states without stand or cables 4.15 kg. Earlier-edition 3.55 kg is not silently transferred.
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
11.72kg(25.8 lb)2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
8.6kg(19 lb)2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Weight Gross: 8.6 kg.

Power

5 of 13 differ
Power supply
Internal2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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 manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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)
17.18W2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own electrical Pon 17.18 W uses the Energy Star reference test method. EU on-mode 20.4 W is separate.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Power use (max)
72W2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own maximum brightness/contrast with maximum loading on all USB ports.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
52W2Maker product pageviewsonic.com/global/products/sheet/XG2431Read 10 October 2026Consumption (max): 52 W.
Power use SDR (EU label)
20.4W2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own electrical On mode 20.4 W as defined in EU 2019/2021 and 2019/2013, separate from Energy Star Pon 17.18 W.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
Not available
Power use HDR (EU label)
Not available
Not available
Standby power
0.3W2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
0.2W2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 20266Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-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
Not available
Not available
EU energy class HDR
Not available
Not available
Energy per 1000 h SDR
Not available
Not available
Energy per 1000 h HDR
Not available
Not available

Certifications

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VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Not available
Not available
Low blue light
Software2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own ComfortView preset decreases blue-light emission by software setting, not a claimed hardware solution.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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
Monitor, Stand riser, Stand base, I/O cover, Power cable (varies by country), DisplayPort to DisplayPort cable, HDMI cable, USB 3.0 upstream cable, Quick setup guide, Safety, Environmental, and Regulatory Information, Alienware welcome card2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own Package Contents. Regional optional items and power cord can vary. No printed-item change from newer sibling manuals is transferred.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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 AW2521HF
TypeCount
Power cable1
DisplayPort to DisplayPort cable1
HDMI cable1
USB 3.0 upstream cable1
Source2Owner's manualdownloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026Own Package Contents explicitly pictures/lists one of each cable. Lengths are not inferred.6Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521hf-monitor_User%27s-Guide_en-us.pdfRead 5 October 2026
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

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Manufacturer warranty (source market)
Not available
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
Not available
Not available

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