UltraGear 27GX790B

General

Series

UltraGear1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026INFO: Product name UltraGear

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

27GX790B-B, 27GX790B-B.AUS, 27GX790B-B.AEU, 27GX790B-B.AEK, 27GX790B-B.AHK1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Regional suffixes from the LG UK, DE, HK and US pages2Maker product pagelg.com/de/monitore/gaming/27gx790b-bRead 30 September 20263Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 20264Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026

GTIN / EAN

195174137055, 8806096678008, 8806096736500, 88060966713131Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 20268806096736500 on this UK page (27GX790B-B.AEK). The DE, HK and US codes come from the other sources2Maker product pagelg.com/de/monitore/gaming/27gx790b-bRead 30 September 2026EAN 8806096678008 for SKU 27GX790B-B.AEU3Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 2026EAN 8806096671313 for SKU 27GX790B-B.AHK4Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026UPC 195174137055

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

December 20258Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026China launch reported 2025-12-10

Status

Available1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026On sale at 599.98 GBP (list 899.99 GBP) on the date accessed

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

LG UltraGear 27GX790A11Reviewrtings.com/monitor/reviews/lg/27gx790b-bRead 30 September 2026RTINGS says the 27GX790B-B is a newer version of the 27GX790A-B with a higher native refresh rate.

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

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

$999.9910Press releaselgusnewsroom.com/press-release/the-ultragear-gx7-is-changing-the-game-as-lgs-fastest-and-brightest-oled-gaming-monitor-to-dateRead 30 September 2026January 6, 2026 U.S. rollout announcement: pre-order retail price $999.99.

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.

Not available

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

US, DE, GB, HK1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026GB from this page, DE and HK from LG Germany and LG Hong Kong, US from the LG US spec sheet2Maker product pagelg.com/de/monitore/gaming/27gx790b-bRead 30 September 20263Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 20264Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026

ColoursiThe maker's own colour names

Not available

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

Gaming1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Display

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

26.5in(67.3 cm)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Size [Inch] 26.5. Marketed as 27-inch

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

Not available

Native resolution

2560 × 1440px1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Aspect ratio

16:91Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Pixel density

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.

0.2292mm1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

Not available

Curved

No8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026Flat format

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

Not available

Screen surface

Matte8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026Standard matte anti-glare. RTINGS also calls the coating matte

Anti-reflection coating

Not available

Touchscreen

Not available

Panel

Panel type

WOLED8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026LG Display 4th-Gen WOLED, Primary RGB Tandem

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

Primary RGB Tandem OLED7Press releaselgusnewsroom.com/press-release/lg-unveils-ultragear-evo-redefining-5k-gaming-with-worlds-first-ai-upscaling-technologyRead 30 September 2026QHD Primary RGB Tandem OLED display. Global sales from the opening day of CES 2026

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.

None (self-emissive)8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026

Local dimming

Not available

Dimming zones

Not available

Panel maker

LG Display8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026

Panel part number

Not available

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

4th Gen8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026

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

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.

10bits5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 20268-bit/ 10-bit color is supported. Method not stated

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

Not available

Displayable colours

1.07 billion1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Published as 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.

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.

99.5%3Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 2026Color Gamut (Typ.) DCI-P3 99.5% (CIE1976), Min. 94.0%

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

Not available

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

Not available

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

Not available

Factory calibrated

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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

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

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

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

1,500,000:11Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Contrast Ratio (Typ.) 1500000:1, Min. 1200000:1

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

335nits1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Brightness (Typ.) 335 cd/m2, Min. 300 cd/m2

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.

300nits1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026DISPLAY: Brightness (Min.) 300 cd/m². Minimum guaranteed specification, not the lowest brightness setting.

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

1,500nits8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 20261500 nits (1.5% APL)

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.

1.5%8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026Stated as 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.

335nits8Reviewtftcentral.co.uk/news/lg-27gx790b-is-unleashed-with-27-540hz-4th-gen-woled-panel-and-720hz-dual-mode-supportRead 30 September 2026335 nits for 100% APL

HDR formats

HDR101Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

DisplayHDR True Black 5001Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Viewing angle (horizontal)

178°1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Viewing angle (vertical)

178°1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Refresh rate and motion

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.

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

Resolution	HDMI 2.1	DisplayPort 2.1	USB-C
2560 × 1440Native	540Hz	540HzDSC	540HzDSC
2368 × 1332	540Hz	540Hz	540Hz
1280 × 720	720Hz	720Hz	720Hz

Source5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Support Mode pages 24-27: native QHD 540, HD 720 Dual-Mode and 2368×1332@540 in 24.5-inch crop mode. DP/USB-C share one table. QHD 540 recommended timing requires Input Compatibility 1.4(DSC) or 2.1(DSC), including USB-C. HDMI native 540 uses 2.1(PC). 1080p240 and HDMI 4K120 are preset signals, not established maxima.

Show as source table

Width (px)	Height (px)	Input	Input version	Maximum accepted rate (Hz)	DSC
2560	1440	DisplayPort	2.1	540	Yes
2368	1332	DisplayPort	2.1	540	Not available
1280	720	DisplayPort	2.1	720	Not available
2560	1440	HDMI	2.1	540	Not available
2368	1332	HDMI	2.1	540	Not available
1280	720	HDMI	2.1	720	Not available
2560	1440	USB-C	Not available	540	Yes
1280	720	USB-C	Not available	720	Not available
2368	1332	USB-C	Not available	540	Not available

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

720Hz=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.

540Hz=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.

540Hz=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.

540Hz=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.

540Hz=CalculatedFrom Refresh rate per resolution and port and Native resolution

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

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

540Hz1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Overclocked refresh rate

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.

Yes4Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026VESA Dual-Mode QHD 540Hz / HD 720Hz

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

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.

VESA AdaptiveSync Display, HDMI VRR, FreeSync Premium Pro, G-SYNC Compatible, Adaptive-Sync1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Key Features explicitly says VESA certified AdaptiveSync, NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro. This proves the named VESA certification, separately from generic DP protocol support.5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Adaptive-Sync/VRR section explicitly says supported interfaces DisplayPort(Adaptive-Sync), HDMI(VRR). This backs generic adaptive_sync and hdmi_vrr, not VESA certification.

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.

Not available

Low framerate compensation

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Exact-model maker claim for FreeSync Premium Pro supplies the product tier. AMD official definition supplies its required LFC feature. Compatible GPU/mode conditions apply.13Maker product pageamd.com/en/resources/support-articles/faqs/DH3-013.htmlRead 30 September 2026Official tier definition explicitly includes LFC in FreeSync Premium Pro. Applies when a compatible AMD GPU and supported FreeSync mode are enabled. No all-input VRR-range claim is inferred.

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

0.02ms1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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

Overdrive settings

Not available

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

Not available

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

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.

Not available

Flicker-free (claimed)

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Eye-comfort section: LG WOLED panel verified Flicker-Free by UL, certificate A196009. This is a panel-level maker claim, not a claim that VRR flicker never occurs.

Black frame insertion

Not available

Measured

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

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

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.

0.06ms14Reviewchimolog.co/lg-27gx790bRead 8 October 2026Reviewer-purchased Japanese 27GX790B-B, the same marketed model as the catalog regional rows. Dual-Mode at 1280 × 720 and 720 Hz gives a mean of 0.06 ms across 30 grey transitions, measured from 10% to 90%. The text also gives 61 microseconds before rounding. No separate overdrive setting is reported. Native 2560 × 1440 at 540 Hz gives a separate 0.08 ms mean. The optical-sensor and oscilloscope method is linked in the article. These are sample measurements. Regional warranty and bundle claims are not transferred.

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

Not available

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

Not available

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

249nits9Reviewtomsguide.com/computing/monitors/lg-ultragear-27gx790b-b-reviewRead 30 September 2026249 nits SDR in the Max Brightness mode. Window size not stated. 561 nits HDR on a 10% window

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

Not available

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

Not available

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

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.

Not available

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

Not available

Reflections (measured)iTotal reflections. Measured by a reviewer

Not available

Connectivity

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.

Type	Version	Count	DSC
HDMI	2.1	2	Not available
DisplayPort	2.1	1	Yes
USB-C	Not available	1	Not available

Source1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026HDMI YES(2ea), DisplayPort YES(1ea), DP Version 2.1, USB-C Yes. HDMI 2.1 from the accessory and US spec sheet. DSC per the manual timing table4Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026HDMI Yes x 2, Supports FRL as compliant with HDMI 2.1. DisplayPort Yes x 1, DP Version 2.1. USB Type-C Yes x 15Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026DisplayPort needs DSC for 2560x1440 at 540 Hz (Input Compatibility 1.4(DSC) or 2.1(DSC))

HDMI ports

2=CalculatedFrom Video inputs

DisplayPort ports

1=CalculatedFrom Video inputs

Highest HDMI version

2.1=CalculatedFrom Video inputs

Highest DisplayPort version

2.1=CalculatedFrom Video inputs

HDMI features

VRR5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026HDMI (VRR)

USB-C video (DP Alt Mode)

Yes5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026DP Alternate Mode (DP over USB-C) are supported via USB-C Port

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.

5W11Reviewrtings.com/monitor/reviews/lg/27gx790b-bRead 30 September 2026Public Office verdict explicitly says USB-C is limited to 5 W Power Delivery. Detailed test cells are membership-locked and were not used.

Thunderbolt

Not available

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

Connector	Count
USB-C	1

Source1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026USB Upstream Port YES(via USB-C)

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.

Connector	USB version	Count
USB-A	3.0	2

Source1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026USB Downstream Port YES(2ea/ver3.0). USB-A per TFTCentral and Tom's Guide

KVM switch

Not available

Daisy chain (MST)

Not available

Ethernet

Not available

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

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

Yes1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Headphone out 4-pole (Sound+Mic), one combined jack

Optical out

Not available

Picture in picture

Not available

Picture by picture

Not available

Audio and camera

Speakers

No14Reviewchimolog.co/lg-27gx790bRead 8 October 2026The exact review lists no built-in speakers. Four-pole headphone output and the power-on buzzer are separate features.

Number of speakers

Not available

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

Not available

Webcam

Not available

Microphone

Not available

Ergonomics and controls

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

130mm5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Max. 130.0 mm

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

Forward5°Backward21°5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026-5 to 21 degrees

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

Left30°Right30°5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 202630 degrees to the left or to the right

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.

Counterclockwise90°5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 202690 degrees counter-clockwise

Removable stand

Yes5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Wall mount installation with the stand removed

VESA mount

100 x 1001Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

VESA adapter needed

Not available

Security lock slot

Yes5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026

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

Joystick, Buttons5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Product and Button Description, page 9: joystick button and separate Dual mode button.

Desktop software

LG Switch5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Software list: Monitor Driver / LG Switch / LG Calibration Studio / Dual Controller

User firmware updates

Not available

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

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

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.

Yes3Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 2026RGB LED Lighting: Unity Hexagon Lighting

Gaming menu features

Black Stabilizer, Crosshair, FPS Counter, Dynamic Action Sync, User-defined Key, Dual-Mode1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026FEATURES list. Dual-Mode and User-defined Key names from the manual5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026

OLED care

OLED care

OLED Screen Saver, OLED Image Cleaning5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026

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

Burn-in warranty length

Not available

Dimensions and weight

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

Width605.2Height (lowest)397.6Height (highest)527.6Depth220mm(23.8 × 15.7 to 20.8 × 8.7 in)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026605.2x527.6x220(Up)/605.2x397.6x220(Down)

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

Width605.2Height351Depth51.2mm(23.8 × 13.8 × 2 in)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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

Not available

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

6.8kg(15 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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

4.3kg(9.5 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

Width790Height182Depth496mm(31.1 × 7.2 × 19.5 in)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Published as Dimension in Shiping (W x H x D) 790x182x496. Height and depth look swapped, stored as published

Box weight

9.8kg(21.6 lb)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Power

• EU energy class SDRF6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026
  ABCDEFG
• EU energy class HDRG6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026
  ABCDEFG

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.

External adapter1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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

110W5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026Printed page 23 names ADS-120QL-19A-3 190110E and MS-Z5790R190-110D0-E adapters with rated output 19 V at 5.79 A. These output ratings corroborate the reviewed adapter. The stored 110 W is the review explicitly published maximum adapter wattage. The monitor 19 V at 5.0 A input rating is separate and is not maximum consumption.14Reviewchimolog.co/lg-27gx790bRead 8 October 2026The reviewed supplied adapter is explicitly described as maximum 110 W with 19.0 V × 5.79 A output. The exact-model maker manual independently gives the same output rating for its two named adapter models. Japanese PSE registration and box contents are not transferred.

Input voltage

100-240 V AC, 50/60 Hz1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

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.

25W3Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 2026Power Consumption (Typ.) 25W. Not listed on the UK page

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

46.32W3Maker product pagelg.com/hk_en/monitors/gaming/27gx790b-bRead 30 September 2026Power Consumption (Max.) 46.32W

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.

24.7W6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026

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.

28.5W6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026

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

0.5W6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026

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

0.3W6EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 20260.3 W. The US spec sheet says less than 0.5W

Energy per 1000 h SDR

25kWh12EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2498871.svgRead 30 September 2026Published energy label SDR kWh/1000h value, read directly from label.

Energy per 1000 h HDR

29kWh12EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2498871.svgRead 30 September 2026Published energy label HDR kWh/1000h value, read directly from label.

Certifications

VESA ClearMR

21,0004Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026

VESA AdaptiveSync Display

Not available

TÜV certifications

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.

Not available

ENERGY STAR

Not available

TCO Certified

Not available

EPEAT

Not available

Colour certifications

Not available

Other certifications

UL Verified Perfect Black, UL Verified Perfect Color, UL Discomfort Glare Free, UL Eyesafe 3.0 CPF60, UL Eyesafe 3.0 RPF401Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Product highlights and eye-comfort section name these UL verifications for the OLED panel. Discomfort Glare Free V563481 (UGR<22), Eyesafe CPF60 V745354, RPF40 V275741. Panel verifications, not a blanket system certification.

In the box

In the box

HDMI cable (ver 2.1), DisplayPort cable (ver 2.1)1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026Published ACCESSORY list names these two included cables. This is the published list, not an assertion of a complete physical inventory.

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

Type
HDMI (ver 2.1)
DisplayPort (ver 2.1)

Source1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026ACCESSORY: HDMI YES (ver 2.1), Display Port YES (ver 2.1)

Warranty

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.

2years4Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026Limited Warranty 2 Year Parts and Labor. Market: US

Dead pixel policy

Not available

Links

Product page

www.lg.com/uk/monitors/gaming/27gx790b-b1Maker product pagelg.com/uk/monitors/gaming/27gx790b-bRead 30 September 2026

Spec sheet

files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdf4Maker spec sheet (PDF)files.bbystatic.com/YZOOI7fCZc/T/bYmkv5jCA==/f3cd232b-3198-4b7a-9903-5aed19b96302.pdfRead 30 September 2026LG Electronics USA spec sheet for 27GX790B-B.AUS dated 12/15/2025, hosted by Best Buy. Its header says QHD (3440 x 1440), a typo: the table says 2560 x 1440

Manual

gscs-b2c.lge.com/open/downloadFile5Owner's manualgscs-b2c.lge.com/open/downloadFileRead 8 October 2026

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.

24988716EU energy label (EPREL)eprel.ec.europa.eu/api/products/electronicdisplays/2498871Read 30 September 2026Model identifier 27GX790B. Also named on the LG Germany page