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:

Viewing Angles, Uniformity, Response and Lag

Viewing Angles

In our viewing angle photo, the CP7271K looks like any other premium IPS monitor. The side angle shows a green shift and a 40% reduction in brightness, while the vertical plane reduces gamma and brightness with only a slight change in color. Off-axis image quality is better than a VA or TN screen, but ultimately, only an OLED will improve upon this aspect of monitor performance.

Screen Uniformity

To learn how we measure screen uniformity, click here.

Our CP7271K showed a slight hotspot in its upper-left corner, spoiling an otherwise good result. The issue was barely visible and didn’t affect the remaining zones. At 12.87% it’s a bit over our preferred 10% threshold. As always with this test, results will vary from sample to sample.

Pixel Response and Input Lag

Click here to read up on our pixel response and input lag testing procedures.

Image 1 of 2

(Image credit: Tom's Hardware)

With all our talk about the CP7271K’s accuracy and reference-level performance, it’s easy to forget that it is also specced to be a premium gaming monitor. Only a handful of Ultra HD screens can run at 120 or 144 Hz. Acer has not skimped in this area. The 7ms draw time is typical of 144 Hz displays regardless of resolution. And its 31ms lag score bests the X27 and PG27UQ by a bit. Will 5 or 8ms make a difference? To casual players no, but those with greater skill might want to pay for that slight boost in speed. To average users, though, the ConceptD will lend to a smooth and addictive gaming experience.

MORE: Best Gaming Monitors

MORE: How We Test Monitors

MORE: All Monitor Content

Current page: Viewing Angles, Uniformity, Response and Lag

Prev Page HDR Performance Next Page Conclusion

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.

Latest