ASUS ROG Strix XG27ACS: Specs, Features, Pros & Cons
This review measures the ASUS ROG Strix XG27ACS against the full 41-spec sheet we track for monitors, comparing it like for like with the 69 other models in our database. It earns a VS Score of 40 out of 100 — the weighted result of every verified specification measured against the class average.
On the spec sheet it is strongest in gaming and weakest in features. Its clearest single advantage over the class average: 0.02 ms less response time — 1 ms vs 1.02 ms (avg). None of our retail partners currently lists the ASUS ROG Strix XG27ACS, so availability may be limited; a missing price never affects the VS Score. A transparency note: this spec sheet is 88% complete. Anything unverified shows as Unknown and is left out of the score — we never estimate a missing value.
Category strengths
Where the ASUS ROG Strix XG27ACS beats the average
- Has USB-C ?
- Has motion blur reduction ?
- Has pivot ?
- Has headphone output ?
- Has swivel ?
- 0.02 ms less response time ?1 ms vs 1.02 ms (avg)
- Has height adjustment ?
Where the ASUS ROG Strix XG27ACS trails the average
- 499,871.1 :1 less contrast ratio ?1,000 :1 vs 500,871.1 :1 (avg)
- 392.42 nits less peak brightness ?400 nits vs 792.42 nits (avg)
- 71.56 W less USB-C power delivery ?7.5 W vs 79.06 W (avg)
- No USB hub ?
- 36.37 Hz less refresh rate ?180 Hz vs 216.37 Hz (avg)
- 0.74 less HDMI ports ?1 vs 1.74 (avg)
- 2.29" (5.81 cm) less screen size ?27" (68.58 cm) vs 29.29" (74.4 cm) (avg)
- 23.79 ppi less pixel density ?109 ppi vs 132.79 ppi (avg)
- No picture-by-picture ?
- No KVM switch ?
Editor’s note
The XG27ACS is the sensible one, and that is a compliment. It does not chase a headline number; it gets the fundamentals right at a price that leaves money for a better graphics card.
The panel is a 27-inch Fast IPS running 1440p at 180 Hz with a 1 ms response and 97% DCI-P3 coverage. That colour figure is the quietly impressive part — it is close to what much more expensive monitors manage, and it makes photo editing and general desktop work look better than the price suggests.
Be realistic about HDR. It carries DisplayHDR 400, the entry rung, with no local dimming and 1,000:1 contrast. You get a slightly brighter image and wider colour than SDR, not the deep blacks and specular highlights the term implies. The panel is also 8-bit rather than 10-bit, which matters far more on a spec sheet than it does in use.
Connectivity is where the savings show. There is one DisplayPort 1.4 and one HDMI, and that HDMI is version 2.0 — so a console gets the lesser input and there is no second port for a second machine. There is a USB-C input, but its power delivery is 7.5 W, which will trickle-charge a phone and nothing more. Do not read USB-C as laptop docking here. There are no speakers and no USB hub either.
The stand is fully adjustable with 120 mm of height travel, it takes a standard 100 mm mount, and there is a quarter-inch tripod socket.
Buy it if you want a fast, accurate 1440p panel and would rather spend the difference on your PC. Skip it if you need multiple inputs or real HDR.
Specifications
Quality bars are generated automatically against 69 other monitors.
Picture
Larger screens are more immersive; measured diagonally.
The total pixel count; higher is sharper.
The panel technology; OLED offers the best contrast.
The more specific panel or backlight technology (e.g. QD-OLED, WOLED or Mini-LED VA).
The native or supported bit depth used to reproduce colour gradients.
The display surface treatment and its balance of glare control and image clarity.
Higher refresh rates are smoother for gaming and scrolling.
Grey-to-grey response; lower reduces motion blur.
Higher brightness makes HDR highlights pop.
The ratio between the brightest and darkest output.
Wider colour gamut for more vivid, accurate colour.
The certified HDR tier.
Pixels per inch; higher looks sharper.
Dims parts of the backlight independently to improve contrast.
More independently controlled zones can improve HDR precision.
Gaming
Variable-refresh technology for tear-free motion.
Syncs the refresh rate to the GPU.
Backlight strobing for clearer motion.
The delay between an input and the image changing; lower is better.
The minimum-to-maximum refresh range over which variable refresh rate operates.
Ergonomics & design
The width-to-height ratio (e.g. 16:9, 21:9).
The curve radius (e.g. 1000R); blank for a flat panel.
Raise and lower the panel.
Angle the panel up and down.
Rotate the panel left and right.
Rotate to portrait orientation.
The VESA wall / arm mount pattern (e.g. 100 x 100 mm).
Connectivity
More HDMI inputs connect more devices.
The highest HDMI standard supported by the monitor.
DisplayPort inputs, preferred for high refresh rates.
The highest DisplayPort standard supported by the monitor.
A USB-C input, often with power delivery for laptops.
Charges a connected laptop over USB-C.
Built-in USB ports for peripherals.
Integrated speakers.
A 3.5 mm audio output for headphones or external speakers.
Control two computers with one keyboard and mouse.
Features
A built-in camera for video calls.
A built-in microphone for calls.
A wired network port for USB-C docking.
Shows inputs from two computers side by side.
How the VS Score works — and what it can’t tell you
Every measurable spec is scored against the average of all the monitors we track: matching the class average scores 50, clearly beating it climbs towards 100, and each spec counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The quality bars on the spec cards above show where this model sits inside the full range for its class, and the overall VS Score rolls every weighted result into one number.
Unknown values are never estimated. A spec this product doesn’t report simply drops out of its scoring — it isn’t penalised with a guess — but a thinner spec sheet does mean a score built on fewer data points, which is why completeness is disclosed under About this data.
Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the VS Score as a structured summary of what can be measured, not a substitute for your own priorities.
About this data
- Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
- Specifications last verified August 8, 2026.
- Data completeness: 36 of the 41 specs in this category are verified (88%). Anything we could not verify is shown as Unknown — never estimated — and is excluded from the score.
- Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
- Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
- Spotted an error in a spec? Tell us and we will correct the sheet.
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The bottom line
The ASUS ROG Strix XG27ACS earns a VS Score of 40, trailing most of the 70 monitors we compare here, at least on the spec sheet. It stands out for has USB-C, has motion blur reduction and has pivot. Just be aware of 499,871.1 :1 less contrast ratio and 392.42 nits less peak brightness before you buy. Weigh those trade-offs against what matters most to you.
The VS Score is generated automatically from the weighted specifications above, measured against all other monitors in our database. Treat it as a shortlisting guide — not a substitute for your own priorities.
