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Dell Alienware AW2521H vs Dell Alienware AW2521HF

Product A: Dell

Alienware AW2521H

106 of 172 known
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Compare the Dell Alienware AW2521HF with

Product B: Dell

Alienware AW2521HF

83 of 172 known
Change Dell Alienware AW2521HF

Compare the Dell Alienware AW2521H with

59 of 164 fields differ

Download CSVDownload JSON
  • 32 different values
  • 27 known for one only
  • 44 the same
  • 61 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Refresh rateA: 360HzB: 240HzAlienware AW2521H is 120 Hz higher.
  2. Standby powerLower is betterA: 0.4WB: 0.3WAlienware AW2521HF is 0.1 W lower.
  3. Power use (typical)Lower is betterA: 21.232WB: 17.18WAlienware AW2521HF is 4.052 W lower.
  4. Power use (max)Lower is betterA: 83WB: 72WAlienware AW2521HF is 11 W lower.

Refresh rate per resolution

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

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
B7.46kg
Weight without stand
A4.5kg
B4.15kg
Box weight
A12.3kg
B11.72kg

All 172 fields

Every value links to where we found it.

ADell Alienware AW2521H
BDell Alienware AW2521HF

General

3 of 8 differ
Series
Alienware1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Alienware1Maker product pagedell.com/support/product-details/en-us/product/dell-aw2521hf-monitor/overviewRead 5 October 2026
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.
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
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.
Not available
Status
Not available
Not available
Predecessor
Not available
Not available
Successor
Not available
Dell Alienware AW2523HF7Reviewrtings.com/monitor/reviews/dell/alienware-aw2523hfRead 23 October 2026RTINGS says the Alienware AW2523HF replaces the Alienware AW2521HF.
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.
Not available
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.
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
Segment
Gaming1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Gaming1Maker product pagedell.com/support/product-details/en-us/product/dell-aw2521hf-monitor/overviewRead 5 October 2026

Display

4 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
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
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
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
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 × 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
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
16:92Owner'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
Pixel density
89.9ppi
89.9ppi
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.
0.2832mm2Owner'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
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
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
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.
No4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact front/side model photographs show a flat panel.
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.
Matte4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact coating discussion identifies matte anti-glare display surface.
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 (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.
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

7 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 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
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
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
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
Not available
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.
Not available
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.
AU Optronics4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026
Panel part number
Not available
M250HAN01.74Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact reviewed AUO M250HAN01.7 AHVA panel. No later HFA regional hardware revision is inferred.
Panel generation
Not available
Not available
Subpixel layout
Not available
Not available
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.
8bits4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026
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.
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.
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
16.78 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
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.
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
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
1,000:12Owner'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
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
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
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
Not available
HDR certification
Not available
Not available
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°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
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°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

Refresh rate and motion

9 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.
BDell 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
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
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
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.
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
VRR range per port
Not available
Not available
Low framerate compensation
Not available
Not available
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.
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
Response time (maker MPRT claim)
Not available
Not available
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
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
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.
No4Reviewpcmonitors.info/reviews/dell-alienware-aw2521hfRead 5 October 2026Exact responsiveness conclusion expressly says no strobed backlight mode.
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
Not available
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.
Not available
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
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
Black frame insertion
Not available
Not available

Measured

5 of 12 differ
Input lag at maximum refresh rate
Not available
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.
Input lag at 60 Hz
Not available
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.
Average response time (measured)
Not available
Not available
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.
Not available
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.
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.
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.
Not available
Gray uniformity (measured)
Not available
Not available
Reflections (measured)
Not available
Not available

Connectivity

6 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
BDell 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
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.0
2.0
Highest DisplayPort version
1.4
1.2
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.
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
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
BDell 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
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.
BDell 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
KVM switch
Not available
Not available
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.
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
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.
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
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.
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
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.
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
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

0 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.
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.
Number of speakers
Not available
Not available
Speaker power per channel
Not available
Not available
Webcam
Not available
Not available
Microphone
Not available
Not available

Ergonomics and controls

5 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
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
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°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
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
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
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
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
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
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
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 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
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.
Not available
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
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
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
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
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.
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
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.
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
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.
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

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

6 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.
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
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
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
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.
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
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.
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.
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.
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.
Box dimensions
Not available
Not available
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.
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

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
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
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 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
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.
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
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.
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
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.
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
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
0.3W2Owner'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
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
0.2W2Owner'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
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

0 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.
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
ENERGY STAR
Not available
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Not available
Not available
Other certifications
Not available
Not available

In the box

2 of 2 differ
In the box
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.
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
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.
BDell 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

Warranty

2 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.
Not available
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.