# ASUS ROG Strix XG27UCDMG 27-inch 4K OLED 240Hz

Source: https://www.ranked10.co.uk/tech/best-oled-gaming-monitors/asus-rog-strix-xg27ucdmg
Ranked #4 in "Best OLED Gaming Monitor 2026: 10 Ranked, Brightness Listed Four Ways": https://www.ranked10.co.uk/tech/best-oled-gaming-monitors

- Price: £649.00 (checked on Amazon UK on 2026-09-23)
- Amazon rating: 4.4 from 187 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0F13V37YH?tag=ranked10-21

The ASUS ROG Strix XG27UCDMG is a 4K QD-OLED gaming monitor listed at £649.00, and it comes fourth in this guide. Its own listing does not agree with itself on two numbers. The product title says 27 inches; the first bullet point and the spec table both say 26.5 inches. The same spec table lists a contrast ratio of 400:1 — the sort of figure you would expect from a VA panel — sitting a line away from 'Display Technology: OLED'. Brightness is written as 400 nits, a fifth way of stating that figure in a set where other listings say '1000', '1000 nits', '250 Candela' and '100'.

On price, £649.00 puts it £50 above the 27-inch 4K OLED Gigabyte at £599.00 and £49.01 above the 49-inch VA Gawfolk at £599.99, the screen with the most ratings in the guide at 1,049. The ASUS carries 4.4 from 187 ratings. Everything on this page is taken from the Amazon listing and its customer reviews; we have not tested this monitor ourselves.

## Specification

| Field | Value |
|---|---|
| Price | £649.00 |
| Rating | 4.4 out of 5, from 187 ratings |
| Screen size | 26.5 inches (the title says 27 inches) |
| Resolution | 3840 x 2160 (4K UHD) |
| Panel | QD-OLED, Display Type listed as OLED |
| Refresh rate and response | 240 Hz, 0.03 ms GTG |
| Contrast ratio | 400:1 (as listed) |
| Brightness | 400 nits (as listed) |

## Questions people ask

**Is the ASUS ROG Strix XG27UCDMG a 27-inch monitor?**

The title says 27 inches, but the bullets and the spec table both say 26.5 inches. The listing carries both figures, and one reviewer notes that 26.5 inches is the actual panel size on OLED.

**What contrast ratio does the ASUS ROG Strix XG27UCDMG list?**

The spec table says 400:1. That is the number in the Amazon feed, on the same page as 'Display Technology: OLED' and QD-OLED picture enhancement.

**What are the refresh rate and response time of the ASUS ROG Strix XG27UCDMG?**

The ASUS bullets claim up to 240 Hz with 0.03 ms GTG and SmoothMotion. One customer review instead describes the '0.3 response time with G-Sync'.

**What connections does the ASUS ROG Strix XG27UCDMG offer?**

USB-C for data, video and charging a laptop over one cable, plus HDMI 2.1, DisplayPort 1.4 and a USB hub, as listed.

**Does the ASUS ROG Strix XG27UCDMG have burn-in protection?**

The listing describes ASUS OLED Care Pro with a Neo proximity sensor that darkens the screen when idle, along with Flicker-free and Low Blue Light technologies.

**How much does the ASUS ROG Strix XG27UCDMG cost?**

£649.00 as listed, with a 4.4 rating from 187 ratings, according to the Amazon page.