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Dell Alienware AW2521H vs LG UltraGear 27GP950

Product A: Dell

Alienware AW2521H

106 of 172 known
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Compare the LG UltraGear 27GP950 with

Product B: LG

UltraGear 27GP950

102 of 172 known
Change LG UltraGear 27GP950

Compare the Dell Alienware AW2521H with

83 of 164 fields differ

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

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Power use HDR (EU label)Lower is betterA: 18.3WB: 86WDell is 67.7 W lower.
  2. Power use (typical)Lower is betterA: 21.232WB: 65WDell is 43.768 W lower.
  3. Refresh rateA: 360HzB: 160HzDell is 200 Hz higher.
  4. Pixel densityA: 89.9ppiB: 163.2ppiLG is 73.3 ppi higher.
  5. Power use SDR (EU label)Lower is betterA: 19.1WB: 31.6WDell is 12.5 W lower.
  6. Standby powerLower is betterA: 0.4WB: 0.5WDell is 0.1 W lower.
  7. Power use (max)Lower is betterA: 83WB: 95WDell is 12 W lower.

Refresh rate per resolution

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

3840 × 2160Native for B
ANot listed
B160Hz
1920 × 1080Native for A
A360Hz
BNot listed

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
B7.9kg
Weight without stand
A4.5kg
B5.7kg
Box weight
A12.3kg
B11.5kg

All 172 fields

Every value links to where we found it.

ADell Alienware AW2521H
BLG UltraGear 27GP950

General

4 of 8 differ
Series
Alienware1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
UltraGear1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own gaming line.
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.
27GP950-B1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own U.S. SKU, matching original own manual 27GP950. Shared 27GP95B manual cover does not establish identical bundle.
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.
1951740076481Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own U.S. AllInfo UPC, literal retail identifier. Different UK EAN is not inherited.
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
Not available
Launch price (US)
$899.994Press articlenotebookcheck.net/Alienware-announces-pricing-and-availability-for-its-new-gaming-monitors.497409.0.htmlRead 7 October 2026Original October 8, 2020 maker launch-price announcement reported by Notebookcheck. Exact 24.5-inch 360 Hz AW2521H. Independent same-day Tom’s Hardware launch report agrees. Subsequent sale prices excluded. Original maker page no longer exposes launch price.
$899.9916Reviewreddit.com/r/Monitors/comments/mu9sg4Read 5 October 2026Contemporaneous April 19, 2021 public original reports exact LG U.S. listing changed from pre-sale 799.99 to 899.99. May 10 ordinary purchase comment explicitly paid 899.99 via LG checkout with original shipment estimate. Stored price reflects actual U.S. launch sale, not an earlier unreleased listing or later discount.
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.
Not available
Segment
Gaming1Maker product pagedell.com/en-us/shop/alienware-25-gaming-monitor-aw2521h/apd/210-aycbRead 5 October 2026
Gaming1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own maker gaming classification.

Display

8 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
27in(68.6 cm)1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own advertised 27-inch size. No separate viewable diagonal inferred from class or pitch.
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
Not available
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
3840 × 2160px1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own native UHD 4K. Original producer sheet headline wrongly calls it QHD, but actual pixel specification and manual agree UHD.
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
16:91Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own native ratio.
Pixel density
89.9ppi
163.2ppi
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.
0.1554mm1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own equal horizontal/vertical pitch 0.1554 mm.
Active display area
Width543.2Height302.6mm(21.4 × 11.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Not available
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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Curved No. No absence from an incomplete U.S. field list inferred.
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.
Matte1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Anti-Glare treatment. Public RTINGS August 2025 correction expressly Matte. No quantitative reflection value inferred.6Reviewrtings.com/monitor/reviews/lg/27gp950-bRead 5 October 2026Free public August 11, 2025 changelog explicitly changed older Semi-Gloss wording to Matte after reassessing light interaction. Own anti-glare source agrees. Locked measurement tables not accessed.
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
Not available
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

13 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
IPS1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Nano IPS LCD.
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
Nano IPS1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own technology name. Unknown exact panel maker/part omitted.
Backlight
Edge-lit LED2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Edge-lit LED7Reviewdday.it/redazione/43339/test-lg-ultragear-gaming-nano-ips-27gp950-e-davvero-la-scelta-giusta-per-le-consoleRead 5 October 2026Exact first-hand review expressly LED edge backlight and coarse vertical-band local dimming. No FALD/Mini LED or unproved zone count inferred.
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.
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 28 explicitly Local Dimming Faster/Fast/Normal/Off. Actual reviewer identifies edge-lit vertical bands, not full-array Mini LED. Number of independently controlled zones unproved and omitted.
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.
Not available
Panel part number
Not available
Not available
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.
10bits3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 37 HDMI 8/10-bit and DP 10-bit supported, with maker 1.07 B. Supported total colour depth 10, native/FRC method unresolved. Exact native mode conditions separately documented.
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.
Not available
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
1.07 billion1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own 1.07 B. Native/FRC method not stated.
sRGB coverage
99%2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own 99% sRGB claim. CIE basis is unstated.
Not available
DCI-P3 coverage
Not available
98%1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own typical DCI-P3 CIE 1976 maker claim. Review measured gamut/volume excluded.
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.
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Factory Calibration and Color Calibrated Yes. No numerical maker error bound inferred.
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
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own H/W Calibration (True Color Pro) Yes. Actual manual Calibration 1/2 monitor slots and first-hand DDay calibration into monitor memory distinguish it from ordinary computer ICC profiles. LUT size/bit depth unreported.3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 23 Calibration 1/2 stores last and preceding monitor calibration and requires LG Calibration Studio. Actual first-hand DDay writes into those monitor memory banks, unlike computer ICC-only calibration. HDR calibration not supported by that reviewed version.7Reviewdday.it/redazione/43339/test-lg-ultragear-gaming-nano-ips-27gp950-e-davvero-la-scelta-giusta-per-le-consoleRead 5 October 2026Exact actual test with LG Calibration Studio stores colour calibration in monitor Calibration 1 memory bank and previous result in Calibration 2. Specific connected input only and SDR calibration only in tested version, not GPU ICC-only calibration. LUT dimensionality/precision unstated.8Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Original current exact model support LG Calibration Studio guide, English page 2 Windows/page 4 Mac explicitly hardware calibration using external compatible colour sensor and USB data connection. Own model manual confirms support. No software installed.9Maker product pagelg.com/us/support/help-library/how-to-calibrate-your-monitor-using-lg-calibration-studio-CT10000030-20155410023763Read 5 October 2026Official LG help defines supported hardware calibration as colour-sensor adjustment of monitor internal settings, separate from computer display settings. Own 27GP950 H/W Calibration Yes and Calibration Studio/manual slots establish exact model applicability. Not a generic claim that all LG monitors support it.
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
1,000:11Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own typical contrast 1000:1, minimum 700:1 separate. Measured settings and local dimming are separately qualified.
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
400nits1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own typical SDR 400 cd/m². No HDR peak inferred from DisplayHDR 600 certification threshold.
Brightness (maker minimum)
Not available
360nits1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own guaranteed minimum, not minimum selectable brightness.
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
HDR101Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own HDR 10 Yes. HDR Effect is SDR simulation, not another format.
HDR certification
Not available
DisplayHDR 6001Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own explicitly VESA DisplayHDR 600.
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°1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own horizontal R/L angle.
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°1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own vertical U/D angle.

Refresh rate and motion

14 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.
BLG UltraGear 27GP950
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 1.4
3840 × 2160Native144Hz10-bit, 4:4:4160Hz10-bit, DSC
Source3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 37 explicit maximum native 4K 160 DP/Overclock On and 4K 144 HDMI. DP requires menu 1.4(DSC), DSC-capable GPU and Overclock On per page 34. Original sheet separately scopes 10-bit 160 DSC On to DP. HDMI page 31 visual table explicitly 8/10-bit RGB 4:4:4 at 4K 144, and own menu On(144 Hz) is required rather than On(120 Hz). Firmware update required for earlier units. Unknown HDMI DSC and DP per-mode chroma omitted. Page 39 has a typo 3480 x 2160 on 160 timing, so explicit maximum 3840 is retained. Lower preset entries alone are not maxima, no lower-mode ceilings guessed. Separate HDMI 8-bit and 10-bit rows reflect both columns explicitly spanning native 144 Hz RGB 4:4:4. Both require HDMI ULTRA HD Deep Color On(144 Hz). Other ambiguous chroma/rate combinations remain unexpanded.4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original visually checked page 1 DP maximum row explicitly 4K 10-bit 160 Hz with Overclock/DSC On and separate 4K 8-bit 120 Hz with DSC Off. Unknown chroma omitted for both DP rows. Unqualified 10-bit 95 Hz line does not explicitly scope DSC Off, so that condition is not inferred. Original HDMI 120 Hz ceiling is earlier firmware, current own manual 144 Hz table is used instead. No HDMI compression claim is in this DP row.
Max refresh rate
360Hz
160Hz
Max refresh rate at native resolution
360Hz
160Hz
Max refresh rate over DisplayPort
360Hz
160Hz
Max refresh rate over HDMI
240Hz
144Hz
Max refresh rate over USB-C
Not available
Not available
Max refresh rate at 10-bit
Not available
160Hz
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
144Hz1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own native rate without overclock.
Overclocked refresh rate
Not available
160Hz1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own 160 Hz O/C, DisplayPort only under own manual.
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.
G-SYNC Compatible, FreeSync Premium Pro, Adaptive-Sync, HDMI VRR, VESA AdaptiveSync Display1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro. Manual plain DP Adaptive-Sync, not native G-SYNC module from generic G-Sync Yes row. Later named VESA and HDMI protocols mapped separately.7Reviewdday.it/redazione/43339/test-lg-ultragear-gaming-nano-ips-27gp950-e-davvero-la-scelta-giusta-per-le-consoleRead 5 October 2026Exact own 2022 review says LG confirmed VRR as defined by HDMI 2.1 and verifies PS5 use. This identifies HDMI-VRR protocol rather than inferring it from FreeSync alone. Generic G-Sync reference not a native-module certification.12Press releaselgcorp.com/media/release/24835Read 5 October 2026Original LG May 23, 2022 release specifically 27GP950 and 27GP850 achieved named VESA AdaptiveSync Display certification. Supplement to protocols and other certs, not generic Adaptive-Sync inference.
VRR range per port
Not available
Not available
Low framerate compensation
Not available
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Low Frame Compensation Yes.
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.
1ms1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own GtG at Faster. Statistic and transition endpoint unstated. Single black-white or MPRT review observations do not populate mean-GtG field.
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
Off, Normal, Fast, Faster3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 26 actual Response Time levels. Local Dimming Faster/Fast/Normal is another setting, not more OD levels.
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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Motion Blur Reduction Tech No. No absence from an incomplete U.S. field list inferred.
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
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Flicker Safe Yes.
Black frame insertion
Not available
Not available

Measured

3 of 12 differ
Input lag at maximum refresh rate
Not available
Not available
Input lag at 60 Hz
Not available
Not available
Average response time (measured)
Not available
Not available
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
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.
881.393:111Reviewhardware-journal.de/testberichte/monitore/5626-test-lg-27gp950-bRead 5 October 2026Same original chart directly tabulates measured 881.393:1 with 402 white and 0.456 black. D65 target, brightness 100%, contrast 70%, Gamma 2, around 30 minutes warmup. Pattern, picture preset and local dimming state unstated, so not claimed to be dimming-disabled native contrast. PCWelt 1100 with unreported conditions excluded in favour of this directly documented test.
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.
402nits11Reviewhardware-journal.de/testberichte/monitore/5626-test-lg-27gp950-bRead 5 October 2026Exact first-hand SDR brightness 402 cd/m² with X-Rite i1 Display Pro, D65 target, OSD brightness 100%, contrast 70%, Gamma 2, around 30 minutes warmup. Pattern, picture preset and local dimming state unstated. Separate HDR peak test not substituted. Public chart LG-27GP950-Helligkeit.jpg.
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

7 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
BLG UltraGear 27GP950
TypeVersionCountDSCHDCP
HDMI2.12Not available2.2
DisplayPort1.41Yes2.2
Source1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own HDMI 2.1 two and DP 1.4 one, both HDCP 2.2 expressly. DP DSC separately actual own manual. HDMI DSC and raw link bandwidth are unproved in independently readable sources and omitted. USB hub ports are separate.
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.0
2.1
Highest DisplayPort version
1.4
1.4
HDMI features
Not available
VRR7Reviewdday.it/redazione/43339/test-lg-ultragear-gaming-nano-ips-27gp950-e-davvero-la-scelta-giusta-per-le-consoleRead 5 October 2026Exact own review explicitly HDMI 2.1 VRR and PS5 compatibility. ALLM/eARC/QMS/CEC unproved and omitted.
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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit USB-C and its DP Alternate Mode No. No absence from an incomplete U.S. field list inferred.
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
BLG UltraGear 27GP950
ConnectorUSB versionCount
USB-B3.01
Source1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own one USB upstream v 3.0, connector Type-B from actual manual A-B host cable.
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.
BLG UltraGear 27GP950
ConnectorUSB versionCount
USB-A3.02
Source1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own two USB downstream v 3.0, physical Type-A peripheral diagram.
KVM switch
Not available
No7Reviewdday.it/redazione/43339/test-lg-ultragear-gaming-nano-ips-27gp950-e-davvero-la-scelta-giusta-per-le-consoleRead 5 October 2026Exact actual review explicitly no KVM and one USB host connection, peripherals not shareable between multiple hosts.
Daisy chain (MST)
Not available
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Daisy Chain No. No absence from an incomplete U.S. field list inferred.
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.
No3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own actual connection inventory: HDMI/DP input, USB-A/B data hub, headphone output and DC. No RJ 45 or optical audio socket.
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.
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Headphone Out Yes and actual jack in manual.
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.
No1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Headphone 3-Pole explicitly output-only, original producer Mic In No. No microphone contacts of shared headset jack.
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.
No3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own actual connection inventory: HDMI/DP input, USB-A/B data hub, headphone output and DC. No RJ 45 or optical audio socket.
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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit PIP No. No absence from an incomplete U.S. field list inferred.
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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit PBP No. No absence from an incomplete U.S. field list inferred.

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

2 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.
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Speaker No. No absence from an incomplete U.S. field list inferred.
Number of speakers
Not available
Not available
Speaker power per channel
Not available
Not available
Webcam
Not available
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Camera No. No absence from an incomplete U.S. field list inferred.
Microphone
Not available
No4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original exact maker sheet explicit Mic No. No absence from an incomplete U.S. field list inferred.

Ergonomics and controls

10 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
110mm1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own stand travel 110 mm, not inferred overall height endpoints.
Tilt
Forward5°Backward21°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Forward5°Backward15°1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own -5/+15 degrees, positive directional magnitudes.
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
Left0°Right0°6Reviewrtings.com/monitor/reviews/lg/27gp950-bRead 5 October 2026Free public exact own 27GP950 review introduction expressly stand cannot swivel. PCWorld technical table incorrectly says swivel and is excluded in favour of direct tested statement and own tilt/height/pivot stand specification.
Pivot
Counterclockwise90°Clockwise90°2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026
Counterclockwise0°Clockwise90°3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own pages 11-12 expressly 90 degrees clockwise. No opposite pivot angle copied from other stands.
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
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Detachable Base and actual stand/mount instructions.
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 1001Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own VESA pattern.
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
Yes3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 13 actual Kensington locking slot and optional cable attachment. Lock not included.
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, Software2Maker product pagelg.com/us/support/product/lg-27GP950-BRead 5 October 2026Own model OnScreen Control supports Monitor Setting and picture-mode menu controls, not only Screen Split layout. Physical joystick independently manual. UltraGear Control Center decorative lighting does not prove desktop picture control by itself.3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 6 joystick operation and page 19 actual menu. Lighting wheel changes rear illumination, not a separate confirmed display-menu controller. OnScreen Control desktop picture settings independently own support.
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.
LG OnScreen Control2Maker product pagelg.com/us/support/product/lg-27GP950-BRead 5 October 2026Own exact support desktop application explicitly monitor settings and picture-mode control. No application installed. Colour calibration and rear-light software are separate functions.
User firmware updates
Not available
Yes10Maker product pagelmu.lge.com/ExternalService/onscreencontrol/fw/27GP950_DSC/MODEL_27GP950_SV4.04_DV31_NV6.06_20220307.zipRead 5 October 2026Original public LG OnScreen Control firmware service exact 27GP950_DSC March 7, 2022 ZIP, fetched/read-only. Contains exact 27GP950 DSC, NXP and scaler firmware plus images.txt. This is monitor firmware rather than driver-only software. No firmware installed. Owner procedure and updated own manual corroborate changed 144 Hz HDMI capability.
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.
Yes1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own explicitly RGB LED Lighting Sphere Lighting. Actual manual wheel and own software configure decorative rear lighting.
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.
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter, User Define Key1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own named actual display/game controls. FPS Counter is received input frame rate per manual, not game-engine internal FPS.

OLED care

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

Dimensions and weight

7 of 7 differ
Dimensions with stand
Width556.3Height (lowest)421.2Height (highest)526.1Depth251.9mm(21.9 × 16.6 to 20.7 × 9.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own complete display width/depth are direct. Height endpoints come from the maker guide mirror listed below, which labels the overall envelope separately from the 130 mm panel travel.14Owner's manualm.media-amazon.com/images/I/C1BEKAl2z0L.pdfRead 7 October 2026Maker guide page 19 explicitly labels overall with-stand height: extended 526.1 mm, compressed 421.2 mm. Separate stand-only heights are 436.8/421.2 mm, and panel travel is separately 130 mm. Main approved literal overall endpoints without forcing their difference to equal panel travel.
Width609.2Height (lowest)464.7Height (highest)574.7Depth291.2mm(24 × 18.3 to 22.6 × 11.5 in)4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original page 2 explicitly Up 574.7 and Down 464.7 endpoints with 609.2 width 291.2 depth. Not computed from travel. Same maker Swedish page corroborates.
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
Width609.2Height352.9Depth54.3mm(24 × 13.9 × 2.1 in)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 38 metric body. Direct measurements, not converted rounded U.S. inches.
Stand footprint
Width465.2Depth251.9mm(18.3 × 9.9 in)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own physical table stand width 465.2 mm and depth 251.9 mm, separate from panel-body width.
Not available
Weight with stand
8.1kg(17.9 lb)2Owner's manualdl.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-aw2521h-monitor_user%27s-guide_en-us.pdfRead 5 October 2026Own weight with stand assembly and cables.
7.9kg(17.4 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 38 net stand-mounted mass, matches original sheet. Cable inclusion unstated.
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.
5.7kg(12.6 lb)3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 38 net body mass below complete product.
Box dimensions
Not available
Width735Height200Depth522mm(28.9 × 7.9 × 20.6 in)4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original page 2 package W x H x D metric. Flat-packed orientation retained.
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.
11.5kg(25.4 lb)4Maker spec sheet (PDF)lgitproductportal.co.uk/wp-content/uploads/2021/09/27GP950-B.pdfRead 5 October 2026Original page 2 shipping 11.5 kg, above complete net product and matching U.S. 25.4 lb rounding.

Power

11 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
External adapter1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own external power adapter.
Adapter rating
Not available
110W5Maker product pagelg.com/se/monitor/ultragear-gaming/27gp950Read 5 October 2026Same exact 27GP950 maker DC output explicitly 110 W (19 V /5.79 A). Matches own U.S. manual page 37 listed external-adapter output 19 V 5.79 A. Not 95 W maximum monitor consumption. Regional net-mains plug/guarantee not inherited.
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 Hz1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own mains range, separate from monitor DC input.
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.
65W3Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Own page 37 typical 65 W under LGE full-white pattern at maximum resolution. Not EU default 31.6 W or adapter 110 W.
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.
95W1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own maximum consumption 95 W, not rated external adapter output. Inclusion of connected peripheral load unstated.
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.
31.6W13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 4. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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.
86W13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 6. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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
0.5W13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 8 ordinary standby, not maker less-than 0.5 bound. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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
0.3W13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 7 exact regulatory off demand, not maker less-than 0.3 bound. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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.
G13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 3. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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.
G13EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Exact European 27GP950 PIS. English page 2 row 5. Regulatory default 60 Hz is not native maximum. Regional guarantee and ABC/voice definitions not inherited as hardware absence.
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.
32kWh14EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Own visually read 27GP950 EU 2019/2013 label 32 kWh/1000h, G. Not a computed rounding of 31.6 W or obsolete annual-energy label.
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.
86kWh14EU energy label (EPREL)lg.com/uk/lgecs.downloadFile.ldwfRead 5 October 2026Own visually read HDR 86 kWh/1000h, G.

Certifications

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VESA ClearMR
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VESA AdaptiveSync Display
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TÜV certifications
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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.
Software1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own Reader Mode selectable filter. No hardware low-blue-light method inferred.
ENERGY STAR
Not available
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TCO Certified
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EPEAT
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Colour certifications
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Other certifications
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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, AC/DC adapter, Power cord, HDMI cable, DisplayPort cable, USB-A to USB-B 3.0 cable, Mouse holder1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own U.S. accessories plus actual manual stand/power assembly. Paper calibration report, remote and VESA adapter inclusion unproved.
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.
BLG UltraGear 27GP950
Type
HDMI cable
DisplayPort cable
USB-A to USB-B 3.0 cable
Source1Maker product pagelg.com/us/monitors/lg-27gp950-b-gaming-monitorRead 5 October 2026Own U.S. accessories explicitly HDMI/DP/USB A to B and USB 3 upstream Yes. One USB host cable counted once. Physical cable counts unstated. Regional sheet USB A-B No is not substituted for own U.S. bundle.

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.
1year2Maker product pagelg.com/us/support/product/lg-27GP950-BRead 5 October 2026Own exact U.S. support and AllInfo explicitly 1 Year Parts & Labor. European two-year warranty not transferred.
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.