Monitors / Compare

BenQ ZOWIE XL2566X+ vs LG UltraGear 27GX790A

A

Product A: BenQ

ZOWIE XL2566X+

85 of 172 known

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B

Product B: LG

UltraGear 27GX790A

103 of 172 known

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All 172 fields

Every value links to where we found it.

Only differences

ABenQ ZOWIE XL2566X+

BLG UltraGear 27GX790A

General

6 of 8 differ

Series

XL Series2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026

UltraGear OLED1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact product title.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

XL2566X+, 9H.LMRLB.QBE7Retailer pageamazon.com/dp/B0D3JC9S9MRead 30 September 20268Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026

27GX790A-B1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact U.S. productData SKU. No regional suffix variants inferred.

GTIN / EAN

840046050511, 47187550941947Retailer pageamazon.com/dp/B0D3JC9S9MRead 30 September 2026UPC 840046050511 for model XL2566X+ (US listing)8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026EAN 4718755094194 for model 9H.LMRLB.QBE, also in another retailer's product data

1951741082771Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Warranty UPC.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

8 August 20245Press releasezowie.benq.com/en-us/news/2024/zowie-xl2566x-press-release.htmlRead 30 September 2026Costa Mesa, USA, August 8, 2024. The EU release of the same date says pre-orders start August 15

Not available

Status

Available8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026Exact 9H.LMRLB.QBE product is listed In stock on the access date. No interpretation of a templated maker Discontinued button.

Not available

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

LG UltraGear 27GX790B18Measurementrtings.com/monitor/reviews/lg/27gx790b-bRead 23 October 2026RTINGS says the 27GX790B-B is a newer version of the 27GX790A-B with a higher native refresh rate.

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$999.997Press releaseprnewswire.com/news-releases/lg-unveils-new-ultragear-oled-gaming-monitor-with-480hz-refresh-rate-302308714.htmlRead 5 October 2026November 18, 2024 LG-authored U.S. launch release explicitly advertised 999.99 USD for exact 27GX790A preorder. Current sale/MSRP values are not substituted. Preorder price does not prove retail availability.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€6999Press releasebenq.eu/de-de/news/products/zowie-xl2566x-plus.htmlRead 30 September 2026August 2024 announcement: pre-orders from August 15 at €699 including VAT in Germany.

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Black8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026Exact reference 9H.LMRLB.QBE technical specifications list Black. No extra colors inferred.

Not available

SegmentiFrom the maker's own product category. Office also covers home and everyday monitors.

Gaming1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Gaming1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact gaming monitor classification.

Display

8 of 12 differ

Screen sizeiDiagonal in inches exactly as the maker advertises it. A class size and the viewable diagonal can differ.

24.1in(61.2 cm)1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

26.5in(67.3 cm)1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Screen Size 26.5 despite headline 27-inch class.

Viewable screen diagonaliDiagonal of the visible image area. This can be smaller than the advertised class size.

Not available

26.5in(67.3 cm)3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4/printed page 5-6 exact 27GX790A-B column 26.5-inch panel.

Native resolution

1920 × 1080px1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

2560 × 1440px1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Native Resolution QHD.

Aspect ratio

16:91Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

16:91Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Aspect Ratio.

Pixel density

91.4ppi=CalculatedFrom Screen size and Native resolution

110.8ppi=CalculatedFrom Screen size and Native resolution

Pixel pitchiDistance between adjacent pixels. Source notes identify horizontal or vertical pitch if they differ. A horizontal figure about a third of the vertical one is the pitch of one subpixel, not of a pixel, so the pixel figure is stored.

0.279mm1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

0.2292mm1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo 0.2292 x 0.2292 mm. Product sheet whole-mm active 587 x 330 is consistent at its published precision.

Active display areaiMaker published active-display width and height, excluding the external frame. Source notes distinguish image area from any published shift-reserve area. Dimensions are not inferred from native resolution or rounded pixel pitch.

Width535.68Height298.08mm(21.1 × 11.7 in)1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Width587Height330mm(23.1 × 13 in)3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Exact column published active area 587 x 330 mm. These whole-mm values are not derived from pixel pitch.

Curved

No8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026

No5Maker product pagelge.co.kr/product/monitors/27gx790aRead 5 October 2026Exact product specification Curved X, corroborated flat panel in maker release.

Curvature radiusiRadius of screen curvature. A published 1800R is 1800 mm.

Not available

Not available

Screen surface

Matte7Retailer pageamazon.com/dp/B0D3JC9S9MRead 30 September 2026"Screen Finish: Matte"

Matte8Press articletftcentral.co.uk/news/lg-ultragear-27gx790a-released-with-27-1440p-480hz-oled-panel-and-displayport-2-1Read 5 October 2026Exact-model specs explicitly standard matte anti-glare coating.

Anti-reflection coating

Not available

Anti-Glare, Low-Reflection of the front polarizer1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Surface Treatment.

Touchscreen

No8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026

Not available

Panel

21 of 31 differ

Panel type

TN1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

WOLED7Press releaseprnewswire.com/news-releases/lg-unveils-new-ultragear-oled-gaming-monitor-with-480hz-refresh-rate-302308714.htmlRead 5 October 2026November 18 LG-authored release explicitly WOLED for exact model. Not newer GX790B Tandem or QD-OLED.

Panel type (as published)iPanel or technology name as published. This is separate from the normalised panel type.

Fast TN1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Page title says "New Fast TN". Spec table says "TN" with "Fast liquid crystal: Yes"

WOLED7Press releaseprnewswire.com/news-releases/lg-unveils-new-ultragear-oled-gaming-monitor-with-480hz-refresh-rate-302308714.htmlRead 5 October 2026Exact maker release expressly WOLED.

BacklightiLayout of the backlight. OLED is none (self-emissive). WLED or LED alone names no layout, so it is left out unless a source states edge-lit or direct-lit.

Edge-lit LED10Reviewtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-reviewRead 7 October 2026Exact review specification table describes TN/W-LED edge array. DyAc2 dual backlight strobing does not change edge-lit classification.

None (self-emissive)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 22 explicitly OLED pixels emit their own light.

Local dimming

Not available

Not available

Dimming zones

Not available

Not available

Panel maker

Not available

LG Display8Press articletftcentral.co.uk/news/lg-ultragear-27gx790a-released-with-27-1440p-480hz-oled-panel-and-displayport-2-1Read 5 October 2026Exact-model introduction explicitly underlying WOLED panel produced by LG Display.

Panel part number

Not available

Not available

Panel generationiGeneration or panel architecture name stated by the source. Brand product generation and panel generation can differ.

Not available

Not available

Subpixel layoutiArrangement of the red, green, blue and any white emitters within a pixel. Individual emitter shapes do not establish their arrangement. Marketing names such as Primary RGB Tandem do not prove an RGB stripe layout.

Not available

RGWB13Reviewrtings.com/monitor/learn/woled-vs-qd-oledRead 5 October 2026Public WOLED explainer named example table explicitly RGWB for LG 27GX790A-B. Not inferred solely from refresh rate/generation.

Colour depthiSupported total colour depth per channel. A stated 8-bit plus FRC implementation is 10 supported bits with FRC, not native 10-bit. A 6-bit plus FRC panel, also called Hi-FRC, is 8 bits with FRC.

8bits10Reviewtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-reviewRead 7 October 2026Specification table explicitly labels Native Color Depth 8-bit. No 10-bit input support is inferred.

10bits2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 23 supports 8/10-bit signals. Native/FRC panel implementation unproved and omitted.5Maker product pagelge.co.kr/product/monitors/27gx790aRead 5 October 2026Exact Korean product specification explicitly 1.07B(10 bit). This is producer colour claim, while manual 23 separately describes accepted 8/10-bit signals. Native/FRC implementation remains unproved.

Colour depth methodiNative panel bits or temporal frame rate control. Supported 10-bit input alone does not prove native 10-bit panel depth.

Native10Reviewtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-reviewRead 7 October 2026Table explicitly says Native Color Depth 8-bit, so not inferred from color-count arithmetic.

Not available

Displayable colours

Not available

1.07 billion1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo 1.07B.

sRGB coverageiPercentage of the sRGB reference gamut covered. Gamut volume is a different measure and is not stored here. Source notes identify the colour-space standard.

98%7Retailer pageamazon.com/dp/B0D3JC9S9MRead 30 September 2026"98% sRGB" in BenQ's own comparison table on the listing. Coverage or volume and CIE version not stated

Not available

DCI-P3 coverageiPercentage of DCI-P3 covered. Do not substitute gamut volume. Source notes identify the CIE reference and any minimum or typical qualifier.

Not available

98.5%1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo DCI-P3 coverage CIE 1976. Not volume or measured gamut.

Adobe RGB coverageiPercentage of Adobe RGB covered. Do not substitute gamut volume.

Not available

Not available

Rec. 2020 coverageiPercentage of Rec. 2020 covered. Do not substitute gamut volume.

Not available

Not available

NTSC coverageiPercentage of the NTSC reference gamut covered. Source notes identify the reference. Do not substitute gamut volume.

Not available

Not available

Factory calibrated

Not available

Yes1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Color Calibrated and Factory Calibration Yes. U.S. physical paper report inclusion is not independently proved by a regional UK claim.

Claimed Delta EiMaker claim for colour error. Source notes retain a less-than qualifier, the colour space and whether the figure is an average or maximum.

Not available

Not available

Paper calibration report in boxiA physical calibration report included in the package. An electronic report in the menu or software does not count as a paper report.

Not available

Not available

Hardware calibration supportiCalibration writes to the monitor internal hardware LUT. Ordinary colour controls or a computer ICC profile do not establish this feature.

Not available

Yes1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo H/W Calibration True Color Pro Yes. Current manual has LG Calibration Studio and calibrated profiles.

Static contrast ratioiPanel native static contrast, without dynamic contrast processing or local dimming. 1000 means 1000:1. Do not store a dynamic contrast claim here.

1,000:11Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

1,500,000:11Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo typical 1.5M:1, not measured infinite contrast.

Brightness (typical, SDR)iMaker typical SDR white luminance. Source notes state any window size, average picture level and operating mode.

320nits1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

275nits1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo typical 275 cd/m². Minimum guaranteed 250 is separate.

Brightness (maker minimum)iMaker minimum guaranteed brightness specification under its stated conditions. This is not the lowest user-selectable brightness unless the source explicitly says so.

Not available

250nits1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo manufacturing guaranteed minimum 250 cd/m². Not minimum user-selectable luminance.

Peak brightness (HDR)iMaker peak HDR white luminance. The source notes state window size or average picture level, mode and time limit where published.

Not available

1,300nits1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo HDR 1300 cd/m² at 1.5% APL, same exact column in producer sheet. Not panel-only response/brightness marketing borrowed from another monitor.

HDR peak test windowiPercentage of screen area used for the peak HDR claim. If the maker publishes average picture level instead, source notes identify that distinction.

Not available

1.5%1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo HDR 1.5% APL.

Full-screen brightnessiMaker white luminance at 100% screen area or 100% average picture level. Source notes state SDR or HDR and mode.

Not available

Not available

HDR formats

Not available

HDR101Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo HDR10 Yes. HDR Effect is not an accepted additional format.

HDR certificationiVESA DisplayHDR certification. None needs a source, such as the maker saying the monitor has no DisplayHDR certification or the model being absent from the VESA list. When no source was checked, it is left out.

None8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026Technical specifications / HDR(High Dynamique Range):No. This exact-model public row establishes absence of HDR support and certification.

DisplayHDR True Black 4001Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo VESA DisplayHDR True Black 400, not LCD DisplayHDR 400.

Viewing angle (horizontal)

170°8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026170 horizontal and 160 vertical. TFTCentral's launch news gives the same 170/160 from BenQ's original spec page

178°1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo CR>=10 R/L.

Viewing angle (vertical)

160°8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026

178°1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo CR>=10 U/D.

Refresh rate and motion

14 of 22 differ

Refresh rate per resolution and portiHighest accepted rate for each proven resolution, input and operating condition. Preset or supported timing lists alone do not prove a maximum. Keep separate bit-depth, chroma and DSC conditions. Dual-mode or crop-mode requirements belong in source notes. Unknown input stays unknown.

ABenQ ZOWIE XL2566X+

Refresh rate per resolution and port. The top rate is in bold.

Resolution	HDMI 2.0	DisplayPort 1.4
1920 × 1080Native	240Hz	400Hz

Source1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Specs/FAQ: DisplayPort 1.4 maximum 400 Hz, HDMI 2.0 maximum 240 Hz, native 1920×1080. Lower-resolution timing entries do not independently establish accepted maxima.

BLG UltraGear 27GX790A

Refresh rate per resolution and port. The top rate is in bold.

Resolution	HDMI 2.1	DisplayPort 2.1
2560 × 1440Native	480Hz	480Hz

Source3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4 exact connector maximum-resolution section: two HDMI ports and one DP port native 480 Hz. No lower preset row stored.5Maker product pagelge.co.kr/product/monitors/27gx790aRead 5 October 2026Exact specifications explicitly maximum resolution and refresh HDMI 2.1 and DP 2.1 each 2560 x 1440 at 480. Maker sheet connector maximum section independently agrees. Preset timings do not prove lower-resolution maxima. Depth/chroma/DSC operating cells unknown and omitted.

Max refresh rateiHighest proven accepted rate across the stored modes, including lower-resolution dual modes.

400Hz=CalculatedFrom Refresh rate per resolution and port

480Hz=CalculatedFrom Refresh rate per resolution and port

Max refresh rate at native resolutioniHighest proven accepted rate at the native pixel resolution, across all inputs and stored operating conditions.

400Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

480Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

Max refresh rate over DisplayPortiHighest proven accepted rate over DisplayPort at native resolution. A higher lower-resolution dual mode is separate.

400Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

480Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

Max refresh rate over HDMIiHighest proven accepted rate over HDMI at native resolution. Console refresh limits can be lower than PC limits.

240Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

480Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

Max refresh rate over USB-CiHighest proven accepted rate over USB-C or Thunderbolt at native resolution. USB data bandwidth settings can lower the video maximum.

Not available

Not available

Max refresh rate at 10-bitiHighest stored native-resolution mode explicitly proven at 10-bit colour. Rows without bit-depth evidence do not count.

Not available

Not available

Native refresh rateiHighest refresh rate the maker rates without overclock. A lower optimum or recommended mode in a manual is not this value.

400Hz1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026"Refresh Rate 400 Hz". The Q&A says DisplayPort 1.4 supports 400Hz and HDMI 2.0 supports a maximum of 240Hz

480Hz1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo 480 Hz at native QHD, direct input maxima separately proved. No overclock or dual-mode inherited.

Overclocked refresh rate

Not available

Not available

Dual modeiA dedicated display mode that changes resolution to raise the maximum refresh rate. Ordinary image scaling or a preset timing does not count.

Not available

Not available

Minimum fixed refresh rateiLowest fixed input rate accepted by the monitor. A VRR lower limit or general vertical scan range is not this value.

Not available

Not available

Adaptive sync technologiesiExact published adaptive-sync protocol or named certification. Generic Adaptive-Sync support does not prove VESA AdaptiveSync Display certification. Source notes distinguish protocols from certifications.

Adaptive-Sync2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026System > Adaptive-Sync is a generic support claim, not VESA AdaptiveSync Display certification. HDMI 2.0 support is limited to AMD graphics cards on XL2566X+.

FreeSync Premium Pro, G-SYNC Compatible, VESA AdaptiveSync Display, HDMI VRR1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo three named certifications. HDMI VRR explicitly supported interface in manual printed page 19. Not a hardware G-SYNC module.2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 19 expressly supported interfaces DisplayPort Adaptive-Sync and HDMI VRR.

VRR range per portiVariable-refresh-rate operating range for each input and the operating mode named in source notes. A fixed timing or general vertical scan range alone is not a VRR range.

ABenQ ZOWIE XL2566X+

Input	Min (Hz)	Max (Hz)
HDMI	60	240

Source16Reviewjisakuhibi.jp/zowie-xl2566x-plusRead 7 October 2026Exact HDMI EDID read with Custom Resolution Utility 1.5.2: FreeSync range 60-240 Hz. This is device-declared operating range, not an independently swept boundary test. AMD GPU required for HDMI Adaptive-Sync. Not HDMI 2.1 VRR or NVIDIA HDMI support. DisplayPort minimum remains unproved.

BLG UltraGear 27GX790A

Not available

Low framerate compensation

Not available

Not available

Response time (maker GtG claim)iMaker grey-to-grey pixel transition claim. Source notes state fastest overdrive or other conditions where published.

Not available

0.03ms1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo 0.03 ms GtG at Faster. LG Display panel marketing 0.02 is not this monitor claim or mean measurement.

Response time (maker MPRT claim)iMaker moving-picture response-time claim, often with strobing enabled. This is not a grey-to-grey transition time.

Not available

Not available

Overdrive settings

Premium, High, Customize, OFF2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026AMA menu options, page 48

Not available

Motion blur reductioniA dedicated blur-reduction feature using backlight strobing or black frame insertion. OLED monitors have no backlight.

Yes1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Not available

Blur-reduction technologyiPublished name of the backlight strobing or black frame insertion feature.

DyAc 21Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Not available

Blur reduction works with VRRiWhether the dedicated strobing or black frame insertion mode can operate at the same time as variable refresh rate.

No1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Spec table: "Variable Refresh Rate: Yes (DyAc 2 OFF)"

Not available

Flicker-free (claimed)

Yes1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026"Flicker-free Technology: Yes (DyAc 2 OFF)"

Yes4Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact-model maker eye-care section explicitly lists panel UL Flicker-Free Display A196009. Separate Reader mode and VRR flicker are not confused with panel certification.

Black frame insertion

Not available

No8Press articletftcentral.co.uk/news/lg-ultragear-27gx790a-released-with-27-1440p-480hz-oled-panel-and-displayport-2-1Read 5 October 2026Exact model article says LG confirmed it does not support BFI.

Measured

4 of 12 differ

Input lag at maximum refresh rateiReviewer total display lag at the monitor highest accepted refresh rate, including a faster dual mode. Native-rate measurements below that maximum and processing-only delay are excluded. Source notes name the rate, resolution and test method.

Not available

Not available

Input lag at 60 HziReviewer total display lag with a fixed 60 Hz input. Processing-only delay is excluded. Source notes name the resolution, mode and test method.

Not available

Not available

Average response time (measured)iReviewer mean grey-to-grey transition time across tested transitions. Source notes state the measurement endpoint, method, refresh rate and overdrive. A single worst transition or an unaveraged settling time does not count.

3ms15Measurementjisakuhibi.jp/zowie-xl2566x-plusRead 7 October 2026Literal Average Transient Response 3.0ms in the exact XL2566X+ 400Hz/High chart. Mean of 30 rise/fall transitions among RGB 0/51/102/153/204/255. Endpoint starts at response onset and first reaches 5 RGB code values before the target, not a final settling endpoint after overshoot. Own optical sensor/oscilloscope tool, estimated 0.1ms precision with experimental analysis limits disclosed. Perceived 3.4ms and complete 9.5ms endpoints differ and are excluded.

Not available

Overshoot (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Contrast ratio (measured)i1000 means 1000:1. Measured by a reviewer

1,433.7:111Measurementtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-review/3Read 7 October 2026Literal chart 1433.7:1, Maximum Brightness Settings, Stock, under Uncalibrated Maximum Backlight Level. FPS1/Normal color temperature is the documented default. Full-field white/black follows the linked published method. Exact DyAc2 state is not individually labelled on this chart. Article separately contrasts approximately 310 nits with DyAc2 engaged. Calibrated 1442.9 and ANSI 1376 are distinct results and excluded.14Measurementtomshardware.com/reference/how-we-test-pc-monitors-benchmarkingRead 7 October 2026Method: full-field white and black luminance with the same equipment (i1Pro, i1DisplayPro, Calman, AccuPel).17Measurementtomshardware.com/reference/how-we-test-pc-monitors-benchmarking/3Read 7 October 2026Linked published protocol uses full-field white/black at maximum brightness before color adjustment. Static white-to-black ratio is separate from ANSI and post-calibration contrast.

Not available

SDR brightness (measured)iReviewer measured SDR white luminance. Source notes state picture mode, window size and brightness setting where available.

343.1476nits11Measurementtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-review/3Read 7 October 2026Literal chart 343.1476 cd/m2, Maximum Brightness Settings, Stock, before calibration. FPS1 is the documented default. Full-field white and maximum brightness follow the linked published test method. Exact DyAc2 state is not individually labelled on the chart. Article separately reports approximately 310 nits with DyAc2 engaged. No chart estimate or strobing result substitution.14Measurementtomshardware.com/reference/how-we-test-pc-monitors-benchmarkingRead 7 October 2026Method: full-field luminance with an i1Pro spectrophotometer, i1DisplayPro colorimeter, Calman and AccuPel reference signal generator. Method site page numbering can redirect between revisions.17Measurementtomshardware.com/reference/how-we-test-pc-monitors-benchmarking/3Read 7 October 2026Review links the published brightness/contrast method. Uncalibrated Maximum Backlight explicitly uses full-field white/black and brightness control all the way up, before color adjustments, avoiding clipping. Current method page was last updated after the 2024 review, so this is published protocol provenance rather than a new claim about historical fixture revisions.

415nits14Measurementtomshardware.com/monitors/gaming-monitors/lg-27gx790a-27-inch-480-hz-oled-gaming-monitor-review/3Read 5 October 2026Uncalibrated maximum backlight section explicitly 25% white window, Peak Brightness High, default Gamer 1 per page 1 test setup. Brightness maximum, variable-brightness behaviour. Firmware not identified. Not claimed full-screen 275 or HDR peak 763.17Measurementtomshardware.com/monitors/gaming-monitors/lg-27gx790a-27-inch-480-hz-oled-gaming-monitor-reviewRead 5 October 2026OSD Features section explicitly tested default Gamer 1 and Peak Brightness High 25% window 415 nits SDR. Page 3 separately proves uncalibrated maximum 415. No preset is inferred from a different HDR test or another monitor.

HDR brightness in a real scene (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

PWM flicker frequency (measured)iOnly when the reviewer found PWM flicker

Not available

Not available

VRR range (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Colour accuracy (measured Delta E)iReviewer average colour error before calibration. Source notes name picture mode, reference colour space and Delta E method. Post-calibration results are excluded.

10.093412Measurementtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-review/4Read 7 October 2026Before calibration, FPS1 default/Normal color temperature. Source Color Gamut chart explicitly labels Avg dE2000: 10.0934 with sRGB targets on CIE 1976 u-v plot. Calman/i1Pro saturation sweep of six colors at 20/40/60/80/100 percent. Grayscale 6.7456 and calibrated gamut 7.58 are excluded.14Measurementtomshardware.com/reference/how-we-test-pc-monitors-benchmarkingRead 7 October 2026Method: six-color saturation sweeps with the same equipment (i1Pro, i1DisplayPro, Calman, AccuPel).

Not available

Gray uniformity (measured)iDeviation on a 50 % gray screen. Measured by a reviewer

Not available

Not available

Reflections (measured)iTotal reflections. Measured by a reviewer

Not available

Not available

Connectivity

12 of 19 differ

Video inputsiPhysical connectors that accept a display signal. A USB-C data-only charging port is not a video input. Counts exclude USB hubs and audio jacks.

ABenQ ZOWIE XL2566X+

Type	Version	Count
HDMI	2.0	3
DisplayPort	1.4	1

Source1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

BLG UltraGear 27GX790A

Type	Version	Count	Max bandwidth (Gbps)	HDCP
DisplayPort	2.1	1	54	2.3
HDMI	2.1	2	Not available	Not available

Source1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo DP 2.1 x 1, HDMI 2.1 x 2 and explicitly DP HDCP 2.3. HDMI HDCP/bandwidth/DSC cells unproved. Current Japanese maker exact DP explicitly UHBR13.5, resolving old 80 Gbps marketing. TFT reports support confirmation 54 Gbps. No quoted 67% calculation used as sole proof.6Maker product pagelg.com/jp/monitors/gaming-monitors/27gx790a-bRead 5 October 2026Current exact-model DisplayPort 1 (UHBR13.5), version 2.1. Supplied DP80 cable does not imply 80 Gbps monitor input.8Press articletftcentral.co.uk/news/lg-ultragear-27gx790a-released-with-27-1440p-480hz-oled-panel-and-displayport-2-1Read 5 October 2026Updated November 22 page records LG support explicit UHBR13.5 (54 Gbps), while earlier 80 Gbps claim and pending team confirmation are documented. Current exact Japanese maker independently confirms UHBR13.5. Per-mode DSC unknown.

HDMI ports

3=CalculatedFrom Video inputs

2=CalculatedFrom Video inputs

DisplayPort ports

1=CalculatedFrom Video inputs

1=CalculatedFrom Video inputs

Highest HDMI version

2.0=CalculatedFrom Video inputs

2.1=CalculatedFrom Video inputs

Highest DisplayPort version

1.4=CalculatedFrom Video inputs

2.1=CalculatedFrom Video inputs

HDMI features

Not available

VRR2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 19 explicitly HDMI VRR. ALLM/CEC and other HDMI features are not inferred.

USB-C video (DP Alt Mode)

No10Reviewtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-reviewRead 7 October 2026Inputs/OSD discussion explicitly says no USB ports. The dedicated S Switch socket is a proprietary control connection, not a USB-C video/hub connection.

No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own connectors in QSG and manual 14-16 are DP, two HDMI, USB-B/A, headset and DC. No USB-C socket.

USB-C power deliverediPower the monitor supplies to a connected device. Source notes distinguish guaranteed, maximum and shared dynamic limits. Power consumed by the monitor is separate.

Not available

Not available

Thunderbolt

Not available

Not available

USB upstream portsiUSB connections from the monitor hub to host computers. Video input and downstream charging ports are separate.

ABenQ ZOWIE XL2566X+

Not available

BLG UltraGear 27GX790A

Connector	USB version	Count
USB-B	3.0	1

Source1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo one port, USB 3.0. Manual 16 explicitly A-B type USB 3.0 upstream cable.

USB downstream hub portsiUSB hub connections for peripherals. These exclude host-facing upstream ports. A port the maker names for service or firmware updates only is not counted.

ABenQ ZOWIE XL2566X+

Not available

BLG UltraGear 27GX790A

Connector	USB version	Count
USB-A	3.0	2

Source1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo two ports, USB 3.0 and matching QSG two physical Type-A sockets.

KVM switch

Not available

Not available

Daisy chain (MST)

Not available

Not available

Ethernet

Not available

No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own physical connector inventory has no RJ45.

3.5 mm headphone outputiAnalogue headphone or audio output. A shared four-pole headset jack counts.

Yes1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Yes3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4 exact four-pole headphone/mic and footnote 9 explicitly 3.5 mm stereo mini plug.

3.5 mm microphone inputiAnalogue microphone input, including the microphone contacts of a shared four-pole headset jack. This does not imply a separate microphone socket.

Not available

Yes3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Same combined four-pole 3.5 mm socket. Manual 16 requires USB upstream connected to PC for microphone.

Optical out

Not available

No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Complete own inventory has no optical socket. Older 27GS95QE optical output not inherited.

Picture in picture

Not available

No3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4 exact 27GX790A PIP/PBP dash while other named models have explicit modes.

Picture by picture

Not available

No3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Same exact model PIP/PBP dash.

Smart features

1 of 4 differ

Smart platform

Not available

Not available

Wi-Fi

Not available

Not available

Bluetooth

Not available

Not available

Remote control

Not available

No12Reviewrtings.com/monitor/reviews/lg/27gx790a-bRead 5 October 2026Public exact-model Differences table explicitly 27GX790A Remote Control No. Its incorrect 27GS95QE sibling remote row is not inherited.

Audio and camera

1 of 5 differ

Speakers

No8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026Technical specifications, Multimedia: Built-in speakers No.

No3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4 exact Built-in Speakers dash, Korean exact X corroborates. Volume and DTS headphone controls do not imply speakers.

Number of speakers

Not available

Not available

Speaker power per channeliRated power per speaker or output channel. Do not store the total of all speakers here.

Not available

Not available

Webcam

No8Retailer pageldlc.com/en/product/PB00654876.htmlRead 7 October 2026

Not available

Microphone

Not available

Not available

Ergonomics and controls

10 of 15 differ

Stand height adjustmentiVertical travel of the supplied stand. This is not the total height of the monitor.

155mm1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

110mm2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 10 direct maximum 110 mm.

TiltiMaximum movement from the neutral position with the supplied stand. Each direction is stored as a positive magnitude.

Forward5°Backward35°1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Published as "Tilt (down/up) -5˚- 35˚"

Forward5°Backward15°2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11 -5 degrees forward and +15 degrees backward.

SwiveliMaximum movement from the neutral position with the supplied stand. Each direction is stored as a positive magnitude.

Left45°Right45°1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Left30°Right30°2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11 +/-30 degrees.

PivotiMaximum movement from the neutral position with the supplied stand. Each direction is stored as a positive magnitude. Pivot is rotation in the screen plane. A small slant adjustment for levelling, as Dell calls it, counts.

Not available

Clockwise90°2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 11-12 explicitly clockwise 90 only. Unknown counterclockwise cell omitted, no zero inferred.

Removable stand

Yes2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026

Yes2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 8 explicitly remove stand before wall mount by reversing assembly.

VESA mount

100 x 1001Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

100 x 1002Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 7 mounting table 100 x 100 mm, direct rear plate diagram 9.

VESA adapter needed

Not available

No2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 7-9 direct rear mounting plate attachment, no intermediate adapter.

Security lock slot

Yes1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

Yes2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 6 socket and cable procedure. Cable sold separately.

On-screen menu controlsiControls that operate the monitor menu or display settings. Desktop window-layout software alone does not count as menu control.

Joystick, Buttons2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 20265-way controller, Input key and Power button on the back. The wired S Switch is also included

Joystick, Software2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 9-10 joystick and printed page 18 LG Switch personalized picture wizard. No remote or extra buttons inferred.

Desktop software

XL Setting to Share1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

LG Switch, LG Calibration Studio2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 13 exact supported apps and 18 calibrated profiles/personalized picture wizard. Dual Controller software does not establish hardware KVM.

User firmware updates

Not available

Yes12Reviewrtings.com/monitor/reviews/lg/27gx790a-bRead 5 October 2026Public exact-model review states testing 3.03/2.04 then retested input lag with updated 3.04/2.04. This proves firmware update capability, not current latest version. Numeric locked results not extracted.

Ambient light sensoriPresence of a physical ambient-light sensor. A regulatory statement that Automatic Brightness Control is unavailable does not prove the sensor is absent. Human presence or proximity sensing is separate.

Not available

Not available

Presence sensoriPresence of a person-detection or proximity sensor. Source notes distinguish room presence from near-screen detection. Absence of one kind does not prove absence of every presence sensor.

Not available

Not available

RGB lightingiDecorative illumination explicitly described as RGB or documented with selectable red, green and blue colours. A power LED or only one or two fixed colours is insufficient.

No10Reviewtomshardware.com/monitors/gaming-monitors/benq-zowie-xl2566x-400-hz-25-inch-gaming-monitor-reviewRead 7 October 2026Only the power-toggle LED is present. Review explicitly says no other LED lighting.

Yes1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo Hexagon RGB lighting, manual 21 static/cycling control.

Gaming menu features

Black eQualizer, Color Vibrance, Auto Game Mode1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Auto Game Mode comes with XL Setting to Share

Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo named features and manual 19. Crosshair/FPS counter mutually exclusive.

OLED care

1 of 3 differ

OLED care

Not available

OLED Screen Move, OLED Screen Saver, OLED Image Cleaning2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 21-22 exact three named menus. Image cleaning roughly 10 minutes and after four hours. No separate Pixel Cleaning/proximity sensor inherited.

Burn-in covered by warrantyiWarranty explicitly covers permanent OLED image burn-in. A general panel warranty alone does not prove burn-in coverage.

Not available

Not available

Burn-in warranty length

Not available

Not available

Dimensions and weight

6 of 7 differ

Dimensions with standiOverall monitor dimensions with the supplied stand. Minimum and maximum heights require the stand position to be identified by the source.

Width576.15Height (lowest)362.3Height (highest)517.3Depth171.65mm(22.7 × 14.3 to 20.4 × 6.8 in)1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Published as 576.15x517.3(High)/362.3(Low)x171.65. Tom's Hardware and retailers list 208-209 mm depth. The maker value is kept

Width605.2Height (lowest)469.3Height (highest)579.3Depth249.1mm(23.8 × 18.5 to 22.8 × 9.8 in)4Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact current UP/DOWN metric values. Manual 23 independently maximum 605.2 x 579.3 x 249.1, KR both positions agree. Minimum published, not calculated.

Dimensions without standiOverall monitor body dimensions after the stand is removed, including the frame and rear housing.

Not available

Width605.2Height351Depth45.3mm(23.8 × 13.8 × 1.8 in)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 23 direct metric values. Rounded inch values not converted into extra precision.

Stand footprintiWidth and depth of the stand base on the desk. A maker's stand width and depth count.

Not available

Not available

Weight with standiWeight with the supplied stand. Source notes state if cables are included. Packaging weight is separate.

5.8kg(12.8 lb)1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Published as "Net Weight (kg) 5.8". Retailer avxperten lists 5800 g with stand, so net weight is read as with stand

9.3kg(20.5 lb)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 23 direct net 9.3 kg. Current US 20.5 lb rounding and manual 20.4 lb differ, metric priority.

Weight without standiMonitor body weight without stand. Source notes state whether cables are included.

3.6kg(7.9 lb)16Reviewjisakuhibi.jp/zowie-xl2566x-plusRead 7 October 2026Review overview explicitly gives 3.6 kg for monitor panel body without stand, versus 5.8 kg with stand. Published specification, no independent weighing method stated. Exact BenQ Japan supplied XL2566X+ sample.

5.1kg(11.2 lb)2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 23 direct 5.1 kg, not computed.

Box dimensionsiShipping box width, height and depth in the maker published orientation. A flat-packed box can have a smaller height than the upright display.

Not available

Width820Height183Depth532mm(32.3 × 7.2 × 20.9 in)4Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact shipping W x H x D 820 x 183 x 532 mm. Packaging orientation retained literally, corroborated U.S. rounded 32.3 x 7.2 x 20.9 inch.

Box weight

9.7kg(21.4 lb)1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Gross weight

12.5kg(27.6 lb)4Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact current shipping 12.5 kg, above product 9.3 kg.

Power

10 of 13 differ

Power supplyiUSB-C powered monitors can draw power from a compatible host or an optional USB-C power source. This does not establish a bundled adapter. Record a supplied adapter and its rating separately.

Internal1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

External adapter2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Printed page 23 external 19 V 7.37 A adapter models ADS-150KL-19N-3 and A40-Z7370R190-140G0-E. A 140.03 W cannot be exactly represented by integer adapter field, so omitted. Monitor 19 V, 7 A, 133 W rating is not max consumption.

Adapter ratingiRated output power of the external power adapter. Do not substitute the monitor maximum consumption.

Not available

Not available

Input voltage

100-240 V AC1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

100-240 V AC, 50/60 Hz1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo mains Input. Not monitor DC input rating.

Power use (typical)iMaker typical operating power under a stated test condition. An unlabeled Power On upper bound does not establish a typical value. EU label test power has separate fields. An ENERGY STAR on-mode (Pon) figure is not a typical value.

Not available

48.22W1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo 48.22 W typical. March producer sheet exact column agrees On Mode 48.22, footnote 11 at 200 nits using one hour video. KR 48.5 is not substituted, EU 24.7 stored separately.3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026PDF page 4 exact 48.22 W On Mode, footnote 11 at 200 cd/m² using one hour video. EU default 60 Hz has separate 24.7 SDR/29.8 HDR values.

Power use (max)iMaker maximum operating power. Source notes state whether USB charging and connected-device load are included.

65W1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026Published as "<65W"

Not available

Power use SDR (EU label)iSDR on-mode power demand in the EU product information sheet, in watts. It can differ from rounded energy-label kWh per 1000 hours.

18.3W3EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/1959872Read 30 September 2026

24.7W9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 4 EU SDR On Mode.

Power use HDR (EU label)iHDR on-mode power demand in the EU product information sheet, in watts. It can differ from rounded energy-label kWh per 1000 hours.

Not available

29.8W9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 6 EU HDR On Mode.

Standby poweriPower in standby or DPMS. Source notes retain any less-than qualifier.

0.5W3EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/1959872Read 30 September 2026

0.5W9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 8 regulatory standby, not producer less-than inequality.

Off-mode poweriPower when switched off but still connected to mains. Source notes retain any less-than qualifier.

0.3W3EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/1959872Read 30 September 2026

0.3W9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 7 regulatory off, not producer less-than inequality.

EU energy class SDR

E3EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/1959872Read 30 September 2026HDR energy class is listed as NA, so the HDR fields are left out

F9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 3.

EU energy class HDR

Not available

G9EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Row 5.

Energy per 1000 h SDR

18kWh4EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_1959872.svgRead 30 September 2026Published energy label SDR kWh/1000h value, read directly from label.

25kWh10EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2179094.pdfRead 5 October 2026Exact model label 25 visually inspected, not rounded from 24.7 W.

Energy per 1000 h HDR

Not available

30kWh10EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2179094.pdfRead 5 October 2026Exact model label 30 visually inspected, not rounded from 29.8 W.

Certifications

3 of 9 differ

VESA ClearMR

Not available

21,0003Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026March 2025 producer sheet exact 27GX790A column explicitly ClearMR 21000. This is documented current certification after initial December 2024 retail, not asserted at November preorder announcement or first retail day. VESA formally announced new 21000 tier December 30, 2024. No hardware/firmware change claimed.16Certification listvesa.org/featured-articles/vesa-adds-new-performance-levels-to-clearmr-and-displayhdr-true-black-standards-to-support-display-technology-advances-for-gamers-and-content-creatorsRead 5 October 2026The December 30, 2024 VESA announcement introduces the ClearMR 21000 tier and directly names the LG 27GX790A as certified. The March 2025 maker catalogue independently confirms the exact model certification. Current certification is distinct from its November preorder announcement.

VESA AdaptiveSync Display

Not available

Not available

TÜV certifications

Not available

Not available

Low blue lightiHardware means a published panel-level hardware low-blue-light solution. Software means a selectable picture filter. Hardware does not require a selectable filter mode.

Software2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026Picture menu: Low Blue Light is an adjustable setting with levels 0-10.

Hardware4Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact-model maker eye-care section explicitly lists panel UL Low Blue Light Hardware Solution Platinum V745051. Separate Reader mode is not confused with panel certification.

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

UL Flicker-Free Display A196009, UL Discomfort Glare Free V563481, UL Low Blue Light Hardware Solution Platinum V7450514Maker product pagelg.com/uk/monitors/gaming/27gx790a-bRead 5 October 2026Exact-model maker eye-care section explicitly lists panel UL certifications A196009, V563481 and V745051. Discomfort glare condition UGR<22.

In the box

2 of 2 differ

In the box

LCD Monitor, Monitor Stand, Monitor Base, Quick Start Guide, Safety Instructions, Regulatory Statements, S Switch, Shields (Shading hood), Power Cord, Video Cable: DP, Video Cable: HDMI2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026Page 12-13. The manual says supplied items may differ by region

Monitor, Stand body, Stand base, AC/DC adapter, HDMI cable, DisplayPort cable, USB A-to-B cable1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo cable/accessory entries, core monitor/stand/adapter in exact U.S. QSG cover. No regional paper report, cable count/length or remote inferred.11Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Exact U.S. support QuickGuide MFL72155882, nine PDF pages, cover 27GX790A. Core monitor/stand/adapter shown, optional regional cable alternatives bound to exact U.S. AllInfo cable list. No paper report inferred.

Cables includediCables supplied with the product. Count is included only when the source establishes it. Bundles can vary by market.

ABenQ ZOWIE XL2566X+

Type
DP 1.4 (1.8m)
HDMI 2.0 (1.8m)
Power Cable (1.8 m)

Source1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

BLG UltraGear 27GX790A

Not available

Warranty

2 of 2 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

3years7Retailer pageamazon.com/dp/B0D3JC9S9MRead 30 September 2026Item details: Warranty Description 3 Years Manufacturer. U.S. listing.

2years1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact AllInfo U.S. 2 Year Parts and Labor. Current support agrees 2 years. Earlier November article quotes conflicting 1 year label, current maker wins. Burn-in-specific coverage unstated and omitted.

Dead pixel policy

US Full HD policy allows up to 2 bright subpixels, 5 dark subpixels and 5 total subpixel defects. Defects exceeding these limits are covered by the manufacturer warranty.13Maker product pagebenq.com/en-us/support/downloads-faq/faq/product/application/dead-pixel-policy.htmlRead 7 October 2026US general LCD monitor policy applies to FHD 1920x1080 models outside the listed PV/SW/PD Zero Bright Dot models. XL2566X+ is FHD and is not one of those named exceptions. Region-specific limits may differ. No zero-defect guarantee claimed.

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Links

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Product page

zowie.benq.com/en-us/monitor/xl2566x-plus.html1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026

www.lg.com/us/monitors/lg-27gx790a-b-gaming-monitor1Maker product pagelg.com/us/monitors/lg-27gx790a-b-gaming-monitorRead 5 October 2026Exact U.S. productData model 27GX790A-B. GX790B Tandem dual-mode is a different product, not a regional variant.

Spec sheet

zowie.benq.com/en-us/monitor/xl2566x-plus.html1Maker product pagezowie.benq.com/en-us/monitor/xl2566x-plus.htmlRead 7 October 2026The maker Specifications section is the opened exact-model specification sheet. It is an HTML table on the product page, not an invented PDF URL.

www.lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdf3Maker spec sheet (PDF)lg.com/content/dam/channel/wcms/jp/catalog/pdf/202503_monitor_ultragear.pdfRead 5 October 2026Maker March 2025 four-page catalogue. Exact 27GX790A column in PDF page 4/printed page 5-6 fully read and visually checked.

Manual

esupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdf2Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026Shared XL Series manual (XL25X-EM-V4, 2025/06/24) that covers XL2540X+, XL2546X, XL2546X+, XL2566X+, XL2586X and XL2586X+

gscs-b2c.lge.com/downloadFile2Owner's manualgscs-b2c.lge.com/downloadFileRead 5 October 2026Current U.S. support English February 25, 2026 exact 27GX790A manual, 38 PDF pages. Fully opened. No GX790B dual-mode facts imported.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

19598722Owner's manualesupportdownload.benq.com/esupport/ESPORTS%20DISPLAY/UserManual/XL2540X+/UM_EN_250731185408.pdfRead 30 September 2026Page 3: "XL2566X+: 1959872"

21790949EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2179094_EN.pdfRead 5 October 2026Exact 27GX790A fiche. October 24, 2024 Union placement is regulatory metadata, not first retail.

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