ASUS ROG Strix XG27ACG 27-inch QHD 180Hz Monitor: features, specs and fit

The ASUS ROG Strix XG27ACG is a 27-inch gaming monitor with a QHD (2560 x 1440) Fast IPS panel, a 180Hz refresh rate and a USB-C connection. It is meant for fast-paced games where smooth motion matters, while still offering enough colour range for general use. Here is what the main specifications mean.

QHD resolution at 27 inches

QHD, also called 1440p, has about 78% more pixels than Full HD. On a 27-inch screen it is generally regarded as a sharp size for gaming and desk work, and it is easier for a graphics card to drive at high frame rates than 4K.

180Hz and 1 ms response

The refresh rate is 180Hz, meaning the screen can update 180 times a second. A higher rate typically makes fast movement look smoother, provided your graphics card produces enough frames. ASUS lists a 1 ms (grey-to-grey) response time, enabled by its Fast IPS technology. Response time describes how quickly a pixel changes colour, and lower figures help reduce smearing behind moving objects. Brands usually measure these figures under specific settings, so real results can vary.

ELMB SYNC and G-Sync compatibility

ASUS Extreme Low Motion Blur Sync (ELMB SYNC) lets the monitor's motion-blur reduction work together with variable refresh rate. ASUS says this helps eliminate ghosting and tearing. The monitor is also G-Sync compatible, so a supported NVIDIA graphics card can match the screen's refresh rate to its frame rate.

Colour and HDR

The panel covers 95% of the DCI-P3 colour gamut, a wide space used in cinema and HDR content, and ASUS says its grey-scale tracking technology gives smoother gradation and uniformity. The monitor is described as HDR, though how strong HDR looks depends on the panel's brightness and the content; check the ASUS specification sheet for its HDR certification level.

USB-C, Aura Sync and extras

The USB-C connection can carry video from a compatible laptop or device with a single cable, and may handle power delivery depending on the model; confirm the wattage in the manual. Aura Sync lets the monitor's lighting be coordinated with other compatible ASUS products. The listing also mentions AI Gaming features, a tripod socket and a three-year warranty.

Size and weight

The listing gives dimensions of 8.6 x 24.2 x 20.1 inches and a weight of 14.6 lb (about 6.6 kg), including the stand as listed.

Who it suits

It suits PC gamers who want high refresh rates at 1440p, and people who want a single monitor for gaming and work with a laptop connected over USB-C.

What to check before you buy

• Graphics card: confirm it can deliver high frame rates at 1440p.
• Inputs: check which video ports are included, and what your devices use.
• USB-C: confirm your laptop supports video output over USB-C and the power delivered.
• Desk space: check the stand's footprint and height adjustment in the manual.
• Mounting: confirm VESA compatibility if you plan to use a monitor arm.

The short version

• 27-inch QHD (2560 x 1440) Fast IPS monitor.
• 180Hz refresh rate and 1 ms (GTG) response time.
• ELMB SYNC and G-Sync compatible.
• 95% DCI-P3, HDR, USB-C and Aura Sync.
• Three-year warranty and a tripod socket.

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