ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C Gaming Monitor

Name: ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C Gaming Monitor
Brand: Unbranded
SKU: B0F2349MJT

Status: ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C… (27 inch 1440p monitor): Unavailable on Amazon as of 2026-10-05 22:27 UTC. Closest in-stock match (same 27" 1440p monitor): KOORUI 27 Inch 320Hz 1440p Gaming Monitor, $209.99 on Amazon as of 2026-10-06 22:21 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $209.99 🛒 Search eBay for this model

Bottom line: The ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C Gaming Monitor: 320Hz (OC) refresh at 2560 x 1440 for high-frame-rate competitive play; main trade-off: 320Hz requires overclock mode; the context gives no native refresh rate.

Unavailable on Amazon as of 2026-10-05 22:27 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 27" 1440p monitor: KOORUI 27 Inch 320Hz 1440p Gaming Monitor — $209.99 on Amazon as of 2026-10-06 22:21 UTC (price may vary).

View Current Price — $209.99

Same 27" 1440p monitor: Z-Edge 27 inch Gaming Monitor 320Hz 300Hz — $229.99 on Amazon as of 2026-10-06 10:25 UTC (price may vary).

View Current Price — $229.99

Same 27" 1440p monitor: INNOCN 27" 2K QHD 2560 x 1440P 320Hz Monitor — $273.57 on Amazon as of 2026-10-06 12:20 UTC (price may vary).

View Current Price — $273.57

Original listing (currently unavailable) → Compare to similar gaming monitors

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-05

Mike Perry — Hardware researcher since 2014. For gaming and productivity monitors, synthesises manufacturer specs against measured monitor reviews (RTINGS, Monitors Unboxed) rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author → How we check display specs →

Pros & Cons

Pros

✓ 320Hz (OC) refresh at 2560 x 1440 for high-frame-rate competitive play
✓ Fast IPS panel rated at 0.3ms (min.) response time
✓ ELMB SYNC runs motion-blur reduction and variable refresh together
✓ USB-C with DP Alt mode for single-cable laptop hookup
✓ 3-year warranty with Advanced Replacement and Repair service

Cons

✗ 320Hz requires overclock mode; the context gives no native refresh rate
✗ 0.3ms is a best-case minimum, not a typical response time
✗ Box includes a DisplayPort cable only, no USB-C cable
✗ HDR support listed but no certification tier stated

Manufacturer description

Elevate your gaming experience with the ROG Strix XG27ACMS, meticulously crafted for utility and performance. Immerse yourself in smooth, lifelike visuals boasting a 1440p resolution, 320Hz (OC) refresh rate, and lightning-fast 0.3ms (min.) response time. 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.

SpecPicks Verdict

SpecPicks scored ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C Gaming Monitor using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

27-inch 2560 x 1440 HDR gaming monitor with ultrafast 320Hz (OC) refresh rate designed for professional gamers and immersive gameplay
ASUS Fast IPS technology enables a 0.3ms response time (min.) for sharp gaming visuals with high frame rates
ASUS Extreme Low Motion Blur Sync (ELMB SYNC) technology enables ELMB together with variable refresh rate, eliminating ghosting and tearing for sharp gaming visuals with high frame rates
DisplayWidget Center enables easy OSD access and monitor settings adjustments with a mouse
USB Type-C with DP Alt mode, meaning that you can connect your device with clutter-free set-up
ROG Gaming A.I technology with AI-powered features to enhance users' gaming experience

Full Specifications

Brand	ASUS
Color	BLACK
Shape	Flat
Model Name	XG27ACMS
Resolution	QHD Wide 1440p
Unit Count	1 Count
Color Gamut	130
Screen Size	27 inches
Aspect Ratio	16:9
Connectivity	USB-C
Display Type	LED
Model Number	XG27ACMS
Refresh Rate	320 hertz
Adaptive Sync	G-Sync Compatible
Response Time	0.3 milliseconds
Screen Finish	Matte
Viewing Angle	178 degrees
Warranty Type	3 Year Warranty with ARR
Contrast Ratio	1000:1
Total Usb Ports	1

Ready to buy?

Amazon shows no buyable offer for ASUS ROG XG27ACMS 27 Inch 1440p 320Hz USB-C… at the last check. The closest in-stock match with the same 27" 1440p monitor is KOORUI 27 Inch 320Hz 1440p Gaming Monitor. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $209.99