ASUS ROG Strix OLED XG27AQDMESUK manufacturer specification · ROG Strix OLED XG27AQDMES- Declared brightness
- 200 cd/m²This one: 250 cd/m²
26.5-inch · 2560 × 1440 · 240 Hz
A 26.5-inch 2560 × 1440 QD-OLED monitor that runs up to 240 Hz over DisplayPort, HDMI 2.1 or USB-C, with a 0.03 ms GtG response rating and DisplayHDR True Black 400 (up to 1000 cd/m² in Peak 1000 mode at 3% APL).

Specifications checked 21 Sept 2026Manufacturer specifications, not a hands-on test.
240 Hz at 2560 × 1440 on every input, a 0.03 ms GtG response rating and 99.1% DCI-P3 (CIE 1976), plus PIP/PBP support and a 3-year warranty that covers panel burn-in.
USB-C charging is limited to 15 W and there are no USB data ports. The 1000 cd/m² figure applies only in Peak 1000 HDR mode at 3% APL; typical brightness is 250 cd/m².
Exact configuration: 26.5-inch · 2560 × 1440 · 240 Hz · exact MSI global configuration
63 specifications in 10 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 2 rows repeat listed facts in the manufacturer’s own wording, kept under “Manufacturer wording”.
Active screen diagonal. Screens with different aspect ratios have different usable areas at the same diagonal.
Up to 240 Hz at 2560 × 1440 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode.
Check that your graphics card or console, input and mode support the listed technology.
SourceRequires a compatible source, interface, operating mode and driver.
HDMI 2.1 source and cable required.
Source port and cable must support DisplayPort Alt Mode.
The same facts in the manufacturer’s combined or original wording, each with its source.
GtG, MPRT and input lag measure different things; a minimum figure is a best case, not an average.
SDR manufacturer brightness; HDR modes have separate area-dependent values.
HDR brightness depends on the mode and average picture level (APL); these are not full-screen figures.
Figures above 100% describe colour volume, not coverage.
Typical value in Peak 1000 mode at 3% APL; True Black 400 mode is 450 cd/m² at 10% APL. Not full-screen brightness.
The same facts in the manufacturer’s combined or original wording, each with its source.
Up to 240 Hz at 2560 × 1440 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode.
Manufacturer maximum USB-C charging output; not monitor power consumption. Compatible host and cable required.
Both the source port and cable must support DisplayPort Alt Mode.
The port is labelled 'USB 2.0 Type-C (DP alt.)', but USB ports are listed as N/A and no USB data function is described.
No USB-A/B ports listed; the USB-C connector is documented for display and 15 W charging.
No KVM function is described in the E2 datasheet or specification page, and no USB-A/B ports are listed.
MSI does not describe supported input combinations, refresh limits or HDR interaction.
The supplied stand has a published height adjustment range of 0–110 mm. This is travel, not the assembled monitor height.
SourceMSI’s E2 datasheet lists a swivel range of −30° to +30°.
Listed adjustment travel, separate from the overall assembled height.
−30° to +30°.
−90° to +90°.
Manufacturer assembled dimensions with stand; MSI lists W × D × H, shown here width × height × depth. Stand depth excludes additional cable clearance; this is not panel thickness.
Manufacturer assembled dimensions with stand; MSI lists W × D × H, shown here width × height × depth. Stand depth excludes additional cable clearance; this is not panel thickness.
Manufacturer net mass with supplied stand; not bare-panel mass.
MSI does not list the weight without the stand.
MSI lists the power type as a power cable to the monitor's AC-in; no external adapter is listed. · No external adapter rating is listed.
MSI does not publish operating, standby or off-mode power consumption for the E2.
MSI does not mention the Gaming Intelligence app for the E2, and no USB upstream port is listed.
MSI does not itemise the individual care functions.
MSI lists a headphone output but does not say whether speakers are built in.
Regional terms and exclusions apply.
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