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ASUS ROG Strix XG279CNS 27-inch 380Hz Gaming Monitor: specs and fit

A 27-inch Full HD Fast IPS gaming monitor with 380Hz overclocked refresh, 0.3ms response, ELMB SYNC, DisplayHDR 400 and USB-C. What the specs mean.

By Bloiq Editors · October 27, 2026 · 3 min read

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The ASUS ROG Strix XG279CNS is a 27-inch gaming monitor with a Full HD (1920x1080) IPS panel and a very high refresh rate. ASUS designs it for fast competitive games, where smooth motion and quick response matter more than sheer resolution.

What 380Hz means in practice

Refresh rate is how many times per second the screen redraws. ASUS says this monitor reaches 380Hz when overclocked, which is the "(OC)" in its description. A higher rate shows more frames per second, and only helps if your graphics card produces them. For many players it is most useful in fast shooters and similar games with high frame rates. At 1080p, a graphics card is more likely to reach very high frame rates than at higher resolutions.

Panel and response time

The monitor uses ASUS Fast IPS technology, which the brand rates at 0.3ms response (GTG, grey to grey). Response time is how quickly a pixel changes colour, and shorter times reduce smearing in fast motion. IPS panels are typically known for wide viewing angles and consistent colour from the side.

ELMB SYNC

Extreme Low Motion Blur Sync (ELMB SYNC) works together with variable refresh rate. ASUS says it reduces ghosting and tearing, which usually cannot be done at the same time with older motion-blur reduction methods. Check the manual for which sync types and graphics cards it supports.

HDR, USB-C and software

The monitor is listed as DisplayHDR 400, an entry tier of HDR certification. It has a USB-C connection, which suits a laptop or a compatible device that can send video over that port. It has a tripod socket, and the 3 yr warranty is mentioned in the title. DisplayWidget Center lets you change on-screen display settings with a mouse, instead of the physical buttons. ASUS also mentions ROG Gaming A.I. features to enhance gameplay.

Size and weight

It measures about 8.6 x 24.2 x 20.1 inches including the stand and weighs 14.3 lb (about 6.5 kg).

Who it suits

It suits competitive players with a graphics card that can produce very high frame rates at 1080p, and people who value motion clarity over resolution.

What to check before you buy

  • Graphics card: check that your PC can reach frame rates near 380 fps in the games you play.
  • Ports: confirm the cables and ports, including whether your laptop supports video over USB-C.
  • Overclocking: see how to enable 380Hz in the manual.
  • Desk space: a 27-inch monitor needs room, and the stand's footprint matters.
  • Resolution: 1080p on 27 inches looks less sharp than higher resolutions, so think about your viewing distance.
  • Mounting: check what mounting options are listed if you want an arm.

The short version

  • A 27-inch Full HD Fast IPS gaming monitor, model XG279CNS.
  • Up to 380Hz overclocked refresh, with a 0.3ms (GTG) response time.
  • ELMB SYNC with variable refresh rate, and DisplayHDR 400.
  • USB-C connection, a tripod socket and DisplayWidget Center software.
  • 3 yr warranty, according to the listing.

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