ASUS ROG Strix XG27ACMES 27″ 255Hz Monitor

27 inch · 2560 x 1440 · 255 Hz · Fast IPS

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Screen size 27 inch
Resolution 2560 x 1440
Refresh rate 255 Hz
Panel Fast IPS
Response time 1 ms

ASUS ROG Strix XG27ACMES 27″ 255Hz Monitor is a 27-inch monitor with 2560 x 1440 resolution, a 255 Hz refresh rate and Fast IPS panel. The high refresh rate makes fast games look smoother. It came out in 2026.

Released: 2026-01-10

Specifications

Key specs

Screen size: 27 inch
Resolution: 2560 x 1440
Refresh rate: 255 Hz
Panel: Fast IPS
Response time: 1 ms
Released: 2026-01-10
Part number: 90LM0C90-B01171
EAN / UPC: 4711636121200

Display

Display diagonal: 68.6 cm (27")
Display resolution: 2560 x 1440 pixels
HD type: Wide Quad HD
Native aspect ratio: 16:9
Display technology: LCD
Panel type: Fast IPS
LED backlight: Yes
Display brightness (peak): 400 cd/m²
Display brightness (typical): 350 cd/m²
Response time: 1 ms
Response time measurement type: GTG (Gray to Gray)
Anti-glare screen: Yes
Screen shape: Flat
Contrast ratio (typical): 1300:1
Maximum refresh rate: 255 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.073 billion colours
Pixel pitch: 0.233 x 0.233 mm
Viewable size, horizontal: 59.7 cm
Viewable size, vertical: 33.6 cm
Digital horizontal frequency: 30 - 410 kHz
Digital vertical frequency: 48 - 255 Hz
Display diagonal (metric): 69 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: DisplayHDR 400, High Dynamic Range 10 (HDR10)
Colour gamut standard: DCI-P3, sRGB
sRGB coverage (typical): 133%
DCI-P3 coverage: 97%

Performance

NVIDIA G-SYNC: Yes
NVIDIA G-SYNC type: G-SYNC Compatible
AMD FreeSync: Yes
AMD FreeSync type: FreeSync Premium
VESA Adaptive Sync support: Yes
Flicker-free technology: Yes
Low Blue Light technology: Yes

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Design

Market positioning: Gaming
Product colour: Black
Feet colour: Black

Ports & interfaces

USB upstream port type: USB Type-C
Number of upstream ports: 1
Number of USB Type-C upstream ports quantity: 1
USB Type-C DisplayPort Alternate Mode: Yes
USB Power Delivery (USB PD): Yes
USB Power Delivery up to: 15 W
HDMI: Yes
HDMI ports quantity: 1
HDMI version: 2.1
DisplayPorts quantity: 1
DisplayPort version: 1.4
Headphone out: Yes
Headphone outputs: 1
Headphone connectivity: 3.5 mm
HDCP: Yes
HDCP version: 2.3

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Wall mountable: Yes
Cable lock slot: Yes
Cable lock slot type: Kensington
Height adjustment: Yes
Adjustable height (max): 11 cm
Pivot: Yes
Pivot angle: 90 - -90°
Swivelling: Yes
Swivel angle range: 45 - -45°
Tilt adjustment: Yes
Tilt angle range: 20 - -5°

Power

Energy efficiency class (SDR): E
Energy efficiency class (HDR): G
Energy consumption (SDR) per 1000 hours: 21 kWh
Energy consumption (HDR) per 1000 hours: 40 kWh
Power consumption (typical): 21 W
Power consumption (standby): 0.5 W
Power consumption (off): 0.3 W
Power consumption (PowerSave): 0.5 W
Power supply type: Internal
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 614.8 mm
Depth (with stand): 188.7 mm
Height (with stand): 503.4 mm
Weight (with stand): 5.96 kg
Width (without stand): 614.8 mm
Depth (without stand): 63 mm
Height (without stand): 367.1 mm
Weight (without stand): 3.87 kg

Technical details

Native refresh rate: 60 Hz

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About this product

ROG Strix XG27ACMES Gaming Monitor – 27-inch 2560x1440, 255Hz OC (Above 144Hz), 0.3ms (min.), Fast IPS, Extreme Low Motion Blur Sync, USB Type-C, G-Sync compatible, DisplayWidget Center, tripod socket, HDR, Gaming AI Utility Redefined Elevate your gaming experience with the ROG Strix XG27ACMES, meticulously crafted for utility and performance. Immerse yourself in smooth, lifelike visuals boasting a 1440p resolution, 255Hz (OC) refresh rate, and lightning-fast 0.3ms response time (min.). Conquer challenges effortlessly with AI-powered features, and enhance your connectivity options with the inclusion of a versatile Type-C connection, ensuring you stay ahead while enjoying the convenience of modern connectivity.

User manual (PDF)

XG27ACMES vs similar monitors

	ASUS ROG Strix XG27ACMES 27″ 255Hz Monitor	ASUS TUF Gaming VG27AQL5F 27″ 220Hz Monitor	AOC AG276QSG2/11 27″ 360Hz Monitor	AOC G4 Q27G42ZE/69 27″ 260Hz Monitor
Screen size	27 inch	27 inch	27 inch	27 inch
Resolution	2560 x 1440	2560 x 1440	2560 x 1440	2560 x 1440
Refresh rate	255 Hz	220 Hz	360 Hz	260 Hz
Panel	Fast IPS	Fast IPS	Fast IPS	Fast IPS
Response time	1 ms	1 ms	1 ms	1 ms
Released	2026	2026	2026	2026