Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Go to page:

Response, Input Lag, Viewing Angles and Uniformity

I’ve rounded up the latest speedy screens, including two dual-mode displays, Asus’ PG32UCDP, which has an FHD 480 Hz mode. It runs UHD natively at 240 Hz. Also here is MSI’s MPG271QRX, ViewSonic’s XG272-2K and Alienware’s AW2725DF.

Pixel Response and Input Lag

Image 1 of 2

Asus ROG Swift PG27AQDP — (Image credit: Tom's Hardware)

480 Hz means near-instant rendering of a full white field pattern. It takes just two milliseconds, and this is typical of any 480-540 Hz monitor. This guarantees the highest possible motion resolution. Moving objects retain the same level of detail as stationary ones.

The separator is then total input lag. The PG27AQDP has just 15ms of total lag, which isn’t quite at the record level of the PG32UCDP’s 11ms, but remember, the 27-inch display accomplishes this at QHD resolution while the 32-inch screen is running FHD. The dual-mode AW2725QF is just behind at 17ms. The others might be the bottom three, but they are also super-fast. Any gamer will be happy to play on any of these monitors.

Test Takeaway: The PG27AQDP doesn’t quite break the record but with 15ms of total control lag, it’s very close. Note that the PG32UCDP must reduce its resolution to take the win. In practice, I couldn’t hit the full 480fps when playing Doom Eternal on a GeForce RTX 4090. The average frame rate was around 340fps. But considering its OLED smoothness, QHD resolution and high pixel density, the PG27AQDP is simply amazing and must be seen to be believed.

Viewing Angles

The PG27AQDP delivers typical viewing angles for the OLED category. There is almost no difference in color or brightness between the head-on and 45-degree views. The top view is also completely usable, with only a slight drop in gamma observed. This is excellent performance. OLED is by far the best screen tech for two users to share.

Screen Uniformity

To learn how we measure screen uniformity, click here.

My PG27AQDP sample showed visually perfect screen uniformity with a deviation of just 2.4%. That’s among the lowest I’ve ever recorded. I’d say it doesn’t get better, but the Alienware AW2725DF hits 2.39%. Talk about a photo finish!

MORE: Best Gaming Monitors

MORE: How We Test PC Monitors

MORE: How to Buy a PC Monitor

MORE: How to Choose the Best HDR Monitor

Current page: Response, Input Lag, Viewing Angles and Uniformity

Prev Page Features and Specifications Next Page Brightness and Contrast

TOPICS

Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.