Verdict
All guidesResearchOpen dataMethodologyAboutContact
Head-to-head · Best 1440p 144hz Gaming Monitors

AOC Q27G3XMN vs ASUS ROG Strix XG27ACS

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.
The short answer

AOC Q27G3XMN comes out ahead by a narrow margin (4.3 vs 4.1). AOC Q27G3XMN is best for: Solo HDR gaming on a budget, where the viewer sits square to the screen. Read the strengths below before deciding.

AOC Q27G3XMN
Higher ratedRanked #3 in Best 1440p 144hz Gaming Monitors
AOC Q27G3XMN
2 sources$229.99as of Oct 11

The AOC Q27G3XMN is a 27-inch 1440p VA gaming panel built around a 336-zone mini LED backlight, which is what gets it a DisplayHDR 1000 badge at a price where HDR is normally a sticker rather than a capability. TFTCentral's read is that the feature set is unusually aggressive for the money. It runs at 180Hz with FreeSync Premium Pro over a native 4,000:1 contrast ratio. The compromises are real: sRGB content oversaturates unless the emulation mode is on, local dimming blooms around small bright objects, and there is no HDMI 2.1 or USB-C.

Strengths
  • — 336-zone mini LED FALD backlight for excellent HDR performance
  • — VESA DisplayHDR 1000 certification with 1300-nits peak brightness
  • — 180Hz refresh rate with AMD FreeSync Premium Pro support
Watch-outs
  • — sRGB emulation mode needed for accurate sRGB SDR content
  • — Potential blooming/halo effect from FALD local dimming
$229.99 · Check Price on AmazonFull review →
ASUS ROG Strix XG27ACS
Ranked #4 in Best 1440p 144hz Gaming Monitors
ASUS ROG Strix XG27ACS
4 sources$229as of Nov 1

The ASUS ROG Strix XG27ACS is a budget 27-inch 1440p IPS gaming monitor with a 180Hz refresh rate, VRR support and a USB-C port with DisplayPort Alt Mode. PC Gamer scored it 90 and called it a really, really quick monitor by IPS standards, with accurate colors out of the box and the best SDR handling in HDR mode it had seen from an affordable LCD. RTINGS rated it decent for PC gaming, crediting low input lag and sharp motion, but found low contrast with no local dimming, so blacks look gray in a dark room and highlights don't pop in HDR. It suits gamers who want a fast, well-calibrated 1440p IPS screen at a sensible price; anyone after real HDR or competitive-level refresh rates should look elsewhere.

Strengths
  • — Very fast response for an IPS panel; PC Gamer said only OLED is clearly faster
  • — Accurate colors out of the box, including SDR content in HDR mode
  • — Supports all common VRR formats and has low input lag
Watch-outs
  • — Low contrast with no local dimming, so blacks look gray in a dark room
  • — Entry-level HDR400: highlights do not pop in HDR
  • — USB-C power delivery is only 7.5W, too little to charge a laptop
$229 · Check Price on AmazonFull review →

How they stack up

AOC Q27G3XMN

Mini LED backlights at this size normally cost considerably more, and the trade the Q27G3XMN makes to get there is zone count: 336 against the 576 or more that pricier full-array displays use, which is the direct cause of the blooming. Against a standard edge-lit VA panel at the same price it is a straightforward upgrade in contrast and peak brightness; against an OLED it wins on brightness and loses on microcontrast, viewing angles and VRR behaviour.

ASUS ROG Strix XG27ACS

RTINGS compared the ASUS ROG Strix XG27ACS directly with the AOC Q27G3XMN: the AOC's Mini LED backlight with local dimming makes it the better choice for HDR gaming, while the ASUS's wide viewing angles make it the better choice for sharing the screen. Unlike the Dell Alienware AW2725DF's 360Hz QD-OLED panel, it is an IPS LCD capped at 180Hz, and PC Gamer notes you have to move to OLED to get something unambiguously faster.

Specs side-by-side

SpecAOC Q27G3XMNASUS ROG Strix XG27ACS
Screen Size27 in27-inch
Resolution2560 x 14402560 x 1440
Refresh Rate180Hz180Hz
Panel TypeVAFast IPS
Response Time1ms (GtG)1ms (GtG, rated)
Brightness450 nits (SDR), up to 1300 nits (HDR)—
HDR SupportDisplayHDR 1000—
Connectivity1x DisplayPort 1.4, 2x HDMI 2.0, 3.5mm audio jack—
HDR—DisplayHDR 400 (no local dimming)
Color Coverage—97% DCI-P3 (rated)
Inputs—1x DisplayPort 1.4, 2x HDMI 2.0, 1x USB-C (DP Alt Mode, 7.5W PD)
Adaptive Sync—VRR (all common formats, per RTINGS)
Stand—Height, tilt, swivel, pivot
← See the full ranking of best 1440p 144hz gaming monitors