ASUS ROG Strix OLED XG27UCDMG / LG UltraGear 34GS95QE-B

ASUS ROG Strix OLED XG27UCDMG: XG27UCDMG · 26.5-inch 4K 240 Hz QD-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.

SpecificationASUS ROG Strix OLED XG27UCDMGLG UltraGear 34GS95QE-B
Release year20252024
Panel26.5-inch (27-inch class) QD-OLED, 16:9, anti-reflection surface

QD-OLED pairs self-emitting pixels with a quantum-dot colour layer; each pixel switches off individually, so blacks are fully dark.

ASUS		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 refresh3840 × 2160, 240 Hz

The 4K 240 Hz signal travels over DisplayPort 1.4 with DSC compression, or over HDMI 2.1 depending on graphics-card support.

ASUS		—
Response time0.03 ms (GtG)

This is the grey-to-grey pixel transition time, not total input lag.

ASUS		—
Brightness1000 cd/m² HDR peak

ASUS notes peak brightness may vary with colour pre-calibration; the peak is reached on a small screen area.

ASUS		275 cd/m² typical (250 minimum); 1,300 nits peak LG
Contrast1,500,000:1 (typical) ASUS—
Colour99% DCI-P3, 145% sRGB; ΔE < 2; 10-bit

Factory calibration (ΔE < 2) means colours are set close enough to target that differences are hard to see.

ASUS		—
HDRHDR10; VESA DisplayHDR 400 True Black ASUSHDR10; VESA DisplayHDR True Black 400 LG
Inputs1 × DisplayPort 1.4 (DSC); 2 × HDMI 2.1 (FRL); 1 × USB-C (DP Alt Mode, 90 W power)

The USB-C input takes video from a laptop and charges it at up to 90 W over one cable. HDMI 2.1 suits consoles at 4K 120 Hz.

ASUS		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 hub and audio3 × USB 3.2 Gen 1 Type-A; headphone jack ASUS—
Variable refreshFreeSync Premium Pro, G-SYNC Compatible; VESA AdaptiveSync Display 240 Hz

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

ASUS		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
FeaturesASUS OLED Care, KVM switch, Extreme Low Motion Blur, Neo Proximity Sensor, flicker-free

KVM shares a keyboard and mouse connected to the monitor between two computers. The proximity sensor dims the screen when the user leaves to reduce OLED wear.

ASUS		—
Power consumption< 80 W; < 0.5 W in power saving; < 0.3 W off; 100–240 V ASUS—
StandTilt +20°/−5°, swivel ±45°, pivot ±90°, 0–120 mm height; VESA 100 × 100; 1/4-inch tripod socket

The tripod socket lets a camera or light be mounted on the stand.

ASUS		—
Dimensions and weightWith stand 61.30 × 50.94 × 16.87 cm, 7.44 kg; without stand 61.03 × 36.92 × 6.65 cm, 5.0 kg ASUS—
Warranty3 years (including panel burn-in)

Warranty terms may vary by country.

ASUS		—
In the boxDisplayPort, Ultra High Speed HDMI, USB 3.2 and USB-C cables; power cord; VESA mount kit; microfibre cloth ASUS—
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
USB and audio—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
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
Power—External adapter (19.5 V, 10.8 A); under 0.5 W in sleep and 0.3 W off 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