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ASUS ROG Strix XG27UCDMG 26.5" 4K WOLED Gaming Monitor 3840x2160 240Hz 0.03ms HDR True Black 400 G-Sync USB-C 90W Black

Brand:
ASUS
90LM0B20-B01971
€1,010.63 €1,122.92
€1,202.65 inc. VAT
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Product Code
04:528143
EAN Code
4711387815243
Manufacturer
ASUS

Quick Specs

Panel
26.5" WOLED 4K UHD
Refresh + Response
240Hz · 0.03ms
Pixel Density
~166 ppi
USB-C
USB-C 90W · HDMI 2.1
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ASUS ROG Strix XG27UCDMG 26.5" 4K WOLED 240Hz Gaming Monitor

ROG Strix 27" 4K WOLED gaming monitor — 240 Hz refresh, 0.03 ms response, ~166 PPI razor-sharp 4K density and USB-C 90W docking. Compact OLED gaming pick.
4K UHD · 240 Hz WOLED~166 ppi · 0.03 msHDR True Black 400USB-C 90W · HDMI 2.1

The ASUS ROG Strix XG27UCDMG is a 27" 4K WOLED gaming monitor in ASUS's ROG Strix tier — same panel technology as the larger XG32UCWMG but in a denser ~166 PPI 27" footprint. Native 3840 × 2160 at 240 Hz with OLED-class 0.03 ms response, DisplayHDR True Black 400 and USB-C 90W docking. HDMI 2.1 for PS5 / Xbox Series X at 4K 120 Hz and full ROG OLED Care features.

Best For
✓ 4K 240Hz gaming on smaller desks
✓ PS5 / Xbox Series X 4K 120 Hz
✓ HDR content + games
✓ Sharp 4K pixel density (~166 PPI)
✓ MacBook USB-C dock
✓ ROG enthusiast value builds

Key Features

 
27" 4K WOLED 240Hz
LG Display WOLED at native 3840 × 2160 on a 26.5" panel — ~166 PPI pixel density razor-sharp for both gaming visuals and text rendering. OLED-perfect blacks and motion clarity.
 
0.03 ms response + Adaptive Sync
OLED-class response eliminates motion blur. Validated NVIDIA G-Sync Compatible and AMD FreeSync Premium for tear-free playback on both GPU vendors.
 
USB-C 90W + HDMI 2.1
USB-C 90W docks a MacBook Pro through a single cable. HDMI 2.1 supports PS5 / Xbox Series X at 4K 120 Hz with VRR.
 
ROG OLED Care
Custom heatsink, pixel cleaning, screen saver, screen shift and logo dimming reduce OLED burn-in risk. ASUS includes burn-in warranty (verify EU reseller terms).

Technical Specifications

Part Number 90LM0B20-B01971 (XG27UCDMG)
EAN 4711387815243
Brand ASUS
Series ROG Strix OLED
Panel Size 27" (26.5" viewable)
Panel Type WOLED (LG Display)
Resolution 4K UHD 3840 × 2160 @ 240 Hz
Pixel Density ~166 PPI
Brightness 1000 cd/m² peak (HDR)
Contrast 1,500,000:1 (effectively infinite — OLED)
Response Time 0.03 ms (GtG)
Adaptive Sync NVIDIA G-Sync Compatible + AMD FreeSync Premium Pro
HDR VESA DisplayHDR True Black 400
Ports 2 × HDMI 2.1, 1 × DisplayPort 1.4, 1 × USB-C (90W PD + DP Alt + USB), USB hub
OLED Care Pixel cleaning · Screen saver · Screen shift · Logo dimming · Custom heatsink
Stand Full ergonomic (height / tilt / swivel / pivot)
Colour Black

Frequently Asked Questions

XG27UCDMG vs PG27UCDM — which to pick?
Both are 27" 4K 240Hz OLED gaming monitors. XG27UCDMG (this monitor) is ROG Strix tier with WOLED panel. PG27UCDM is ROG Swift flagship with QD-OLED panel + premium build. Pick by panel preference (WOLED vs QD-OLED) and budget.
Will it suffer OLED burn-in?
OLED burn-in risk is real for static UI over many hours. ASUS combines pixel shift, screen saver, panel refresh and custom heatsink to mitigate. For mixed gaming + content use this is fine; for all-day static productivity UI, prefer LCD.
Does HDMI 2.1 deliver 4K 120 Hz on PS5 / Xbox Series X?
Yes — HDMI 2.1 supports 4K 120 Hz with VRR and ALLM on both PS5 and Xbox Series X.
Will USB-C 90W charge a MacBook Pro 16"?
Yes — 90W PD over USB-C charges 13"/14" MacBook Pro at full speed and 16" at sustained-use rate. Carries 4K video and USB hub through the same cable.
Singular Expert Insight
Choose XG27UCDMG if you want 27" 4K WOLED 240Hz gaming at the ROG Strix price tier in a compact footprint with razor-sharp ~166 PPI density. If you want QD-OLED panel + premium build, pick ROG Swift PG27UCDM. For 32" larger screen choose XG32UCWMG. For static productivity-heavy work prefer LCD to avoid burn-in.

Buyer's Guide

Buy it if
You want a 27" 4K WOLED 240Hz gaming monitor with USB-C 90W docking and HDMI 2.1 in the ROG Strix value tier.
Skip it if
You prefer QD-OLED (use PG27UCDM), want larger 32" panel (XG32UCWMG / PG32UCDM) or do daily static-UI work (use LCD).
Also consider
ASUS PG27UCDM (QD-OLED ROG Swift), XG32UCWMG (32" WOLED 240Hz), LG 32GS95UE (32" WOLED 240Hz).

Features - ASUS - 90LM0B20-B01971

Colour
black
More Details
Product Code
04:528143
EAN Code
4711387815243
Manufacturer
ASUS
Technical specifications
Monitor Usage
  • Gaming
Monitor Size
27"
Resolution
4K (UHD)
Resolution (raw)
3840×2160
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