LG UltraGear 27GX790A-B / LG UltraGear 34GS95QE-B

LG UltraGear 27GX790A-B: 27-inch class (26.5-inch) QHD 480 Hz OLED

LG UltraGear 34GS95QE-B: 34GS95QE-B (US code 34GS95QE-B.AUS; .AUS is a factory suffix). 34-inch class (33.9-inch) 800R curved OLED.

SpecificationLG UltraGear 27GX790A-BLG UltraGear 34GS95QE-B
Release year20252024
Model27GX790A-B (US version 27GX790A-B.AUS)

LG’s US spec sheet carries a 2024 copyright; LG Brazil lists the model as a 2025 product.

LG		—
Panel26.5-inch (27-inch class) OLED, 16:9

The actual viewable diagonal is 26.5 inches.

LG		33.9-inch (86.2 cm) OLED; 21:9; 800R curve

800R means the screen follows the arc of an 800 mm radius circle, bringing the edges of the wide screen closer to your eyes.

LG
Resolution and pixel pitch2560 × 1440 (QHD); 0.2292 mm pixel pitch

QHD at 27 inches means lower pixel density than 4K; small text looks less crisp but high frame rates are easier to reach on the GPU.

LG		—
Refresh rate480 Hz

480 Hz means up to 480 frames per second; seeing that benefit requires the game and GPU to deliver close to 480 fps.

LG		—
Response time0.03 ms (GtG)

Grey-to-grey pixel transition time; it is not input lag.

LG		—
BrightnessTypical 275 cd/m² (min 250); HDR peak at 1.5% APL typical 1,300 cd/m² (min 1,040)

1,300 nits applies only to small highlights covering 1.5% of the screen; on a full white screen OLED automatic brightness limiting kicks in.

LG		275 cd/m² typical (250 minimum); 1,300 nits peak LG
Contrast1,500,000:1 (typical)

OLED pixels can switch fully off, so black level is near zero; LG’s page notes the figure is measured at 25% APL.

LG		—
ColourDCI-P3 98.5% (CIE 1976); 10-bit (1.07 billion colours)

The sheet lists a paper calibration report in the box.

LG		—
HDRHDR10; VESA DisplayHDR True Black 400

True Black is the VESA HDR tier for very low black-level displays such as OLED.

LG		HDR10; VESA DisplayHDR True Black 400 LG
Variable refreshVESA AdaptiveSync; NVIDIA G-SYNC Compatible; AMD FreeSync Premium Pro

Variable refresh matches the panel to the GPU frame rate to reduce tearing and stutter. LG’s page also lists VESA ClearMR 21000 certification.

LG		VESA AdaptiveSync; NVIDIA G-SYNC Compatible; AMD FreeSync Premium Pro

Variable refresh matches the screen to the graphics card’s frame rate, reducing tearing and stutter.

LG
Screen surfaceAnti-glare, low-reflection front polariser LG—
Inputs2× HDMI (HDMI 2.1 FRL compliant); 1× DisplayPort 2.1

FRL is the high-bandwidth transfer mode of HDMI 2.1. There is no USB-C video input.

LG		2 × HDMI 2.1; 1 × DisplayPort 1.4 (DSC)

DSC compresses the image in a visually lossless way to carry high resolution and refresh rates over one cable. Inputs are detected automatically.

LG
USB and audioUSB 3.0: 1 upstream, 2 downstream; 4-pole headphone out (sound + mic); DTS Headphone:X

No built-in speakers are listed.

LG		USB 3.0: 1 upstream, 2 downstream; 4-pole headphone output

The 4-pole jack accepts a headset with a microphone directly on the monitor.

LG
StandTilt -5°/15°; swivel -30°/30°; height 110 mm; clockwise pivot; VESA 100 × 100

It has a tool-free 1Click stand mount and hexagonal RGB lighting on the back.

LG		—
PowerExternal adapter, 100–240 V; under 0.5 W in sleep, under 0.3 W off

The sheet does not list typical power consumption.

LG		External adapter (19.5 V, 10.8 A); under 0.5 W in sleep and 0.3 W off LG
Burn-in careOLED Care

LG says the feature helps prevent burn-in from static high-contrast images left on screen for long periods but may not prevent all image retention.

LG		—
Size and weightWith stand 23.8 × 22.8 × 9.8 in (raised), 20.5 lb; without stand 23.8 × 13.8 × 1.8 in, 11.2 lb

About 9.3 kg with stand, about 5.1 kg without.

LG		—
In the boxPower cord, DisplayPort 2.1 cable, HDMI 2.1 cable, USB A-to-B cable, paper calibration report LG—
Resolution—3440 × 1440 (UWQHD); 0.231 mm pixel pitch LG
Refresh and response—240 Hz; 0.03 ms (GtG) LG
Contrast and colour—1,500,000:1 typical; 98.5% DCI-P3 (CIE 1976); 10-bit (1.07 billion colours) LG
Surface—Anti-glare, low-reflection coating LG
Display features—PBP/PIP (2 sources); Black Stabilizer; Crosshair; FPS counter; Reader Mode; factory calibration; hardware calibration ready; VESA ClearMR

PBP splits the screen to show two sources side by side, while PIP shows the second source in a small window. Black Stabilizer brightens detail in dark scenes.

LG
Stand and mounting—Height, tilt and swivel adjustment; VESA 100 × 100 mm LG
Dimensions—784.1 × 465.9–585.9 × 278.7 mm with stand; 784.1 × 358.3 × 167.1 mm without LG
Weight—9.3 kg with stand; 5.9 kg without LG