ASUS ROG Swift OLED PG32UCWM / LG UltraGear evo GX9 39GX950B-B

ASUS ROG Swift OLED PG32UCWM: PG32UCWM · 31.5-inch · black

LG UltraGear evo GX9 39GX950B-B: 39GX950B-B · 38.86-inch · 5K2K · black

SpecificationASUS ROG Swift OLED PG32UCWMLG UltraGear evo GX9 39GX950B-B
Release year20262026
Announcement15 July 2026: availability announcement ASUS—
Display31.5-inch OLED; 3840 × 2160; 16:9; flat, glossy surface ASUS38.86-inch OLED · 5120 × 2160 · 21:9 LG
Subpixel layoutTandem RGB OLED; RGB stripe without a separate white subpixel ASUS—
Dual mode3840 × 2160 / 240 Hz or 1920 × 1080 / 480 Hz

480 Hz is not available at 4K.

ASUS		—
Response time0.03 ms GtG, manufacturer specification

A pixel transition, not total input latency.

ASUS		—
ColourTrue 10-bit; 99% DCI-P3 coverage, manufacturer specification ASUS—
HDRDolby Vision; VESA DisplayHDR 400 True Black; claimed 1000-nit peak

Peak brightness is not sustained full-screen brightness.

ASUS		—
Video inputs1 × DisplayPort 2.1a UHBR20 (80 Gbit/s); 2 × HDMI 2.1 FRL; 1 × USB-C DP Alt Mode ASUS—
USB-C power90 W USB Power Delivery ASUS—
USB and audio3 × USB-A 3.2 Gen 1; USB-B upstream; headphone output; no built-in speakers ASUS—
Variable refreshG-SYNC Compatible ASUSG-SYNC Compatible; FreeSync Premium Pro LG
Stand80 mm height adjustment; −5° / +20° tilt; 15° swivel each way; no pivot ASUSTilt −8° / +15°; ±30° swivel; 110 mm height adjustment

The manual does not describe pivot rotation.

LG
Wall mountingVESA 100 × 100 mm ASUS—
DimensionsWith stand 714.5 × 594.3 × 276 mm; without stand 714.5 × 430.4 × 64.4 mm (W × H × D) ASUS921.4 × 605.4 × 322.8 mm with stand (up); 921.4 × 495.4 × 322.8 mm (down); 921.4 × 405.0 × 118.7 mm without stand

Width × height × depth.

LG
Weight9 kg with stand; 6 kg without stand ASUS10.7 kg with stand; 6.8 kg without LG
Mode restrictionsELMB and VRR cannot run together; Pixel Cleaning interrupts the display for about 6 minutes ASUS—
Curvature—1500R LG
Pixel pitch—0.1776 × 0.1776 mm LG
Refresh rate—165 Hz (5120 × 2160) LG
Dual-Mode—330 Hz at 2560 × 1080 in the 21:9 modes; 330 Hz at 1920 × 1080 in the 16:9 modes

The product page calls this mode QHD in one place and WFHD in another; the resolutions in the manual were used. Exit the game before changing the mode.

LG
Pixel response—0.03 ms GtG

Not total input lag.

LG
Brightness—335 nits typical; 300 nits minimum LG
Peak HDR brightness—1500 nits

Peak figure LG states under internal test conditions; not sustained full-screen brightness.

LG
HDR formats—HDR10; VESA DisplayHDR True Black 500; no Dolby Vision LG
Colour coverage—DCI-P3 99.5% typical, 94% minimum (CIE1976); 1.07 billion colours LG
Contrast ratio—1,850,000:1 typical; 1,480,000:1 minimum

Manufacturer figure.

LG
Surface—Anti-glare, low-reflection front polarizer LG
Calibration—Factory calibrated; hardware-calibration ready (LG Calibration Studio) LG
DisplayPort—1 × DisplayPort 2.1; UHBR20

The graphics card and cable must support this rate.

LG
HDMI—2 × HDMI 2.1

The menu has 2.1(PC) and 2.1(AV) compatibility options. The product page connectivity table omits the HDMI count; the two inputs in the manual were used.

LG
USB-C input—1 × USB-C; video, data and up to 90 W power

The manual lists DP Alternate Mode and Power Delivery. The port does not power the monitor; the adapter is required.

LG
USB hub—USB-C upstream; 2 × downstream USB 3.2 Gen 2

The manual says the downstream ports run at USB 2.0 over a USB-C to USB-C cable and USB 3.0 over a USB-C to USB-A cable.

LG
Multiple sources—2 × PBP and PIP; no built-in KVM LG
Audio—2 × 7 W speakers; 4-pole headphone output; AI Sound LG
Wall mount—100 × 100 mm; 4 × M4 × L10 screws; optional LSW149 plate LG
Power—External adapter; 40.3 W on-mode in SDR, 45.9 W in HDR

On-mode power demand from the product information sheet.

LG
OLED care—Screen saver; Image Cleaning of about 10 minutes

The manual states that prolonged use can cause permanent brightness reduction and image retention.

LG
Lighting—Unity Hexagon Lighting 2.0 on the back LG
Warranty—2 years; OLED panel included LG