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Response, Input Lag, Viewing Angles and Uniformity

To compare the H27E6, I mined the database for other speedy QHD screens that use IPS or VA panels. There are many OLEDs that fit into this category, but they cost far more than $270. The group is HP’s Omen 27qs G2, AOC’s CQ27G4ZH and Q27G4ZMN, Gigabyte’s GS27QXA, and ViewSonic’s XG2736-2K.

Pixel Response and Input Lag

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KTC H27E6 — (Image credit: Tom's Hardware)

That extra 20 Hz of overclock puts the H27E6 in first place for panel response with a 3ms draw time for a full white field. It is a super smooth display when driven to its maximum rate and is worth buying a fast video card for. If you can’t sustain 300 or 320fps, the MPRT feature works better than most at keeping motion resolution high without artifacts. It phases just a little but not enough to distract during gameplay.

The H27E6 excelled in the input lag test too, with an 18ms total score. The ViewSonic is an overachiever here, doing the trick in just 16ms with only 240 Hz. But compared to the others, KTC is right in the mix with the very best panels. While all of these are good bang-for-the-buck choices, the H27E6 is hard to ignore as a serious contender.

Test Takeaway: The H27E6 is one of the quickest and smoothest monitors in the 27-inch QHD non-OLED genre, with input lag that is on par with many OLEDs. They just have the edge in motion resolution. KTC’s overdrive is artifact free and its MPRT feature works better than most with only slight phasing observed. Gameplay has a premium feel thanks to video processing that punches well above its weight class.

Viewing Angles

I have observed that IPS panels with high contrast, like the H27E6’s 1,500:1, sacrifice a bit of off-axis quality. My sample showed a red tint and 20% light reduction at 45 degrees to the sides. Gamma remained consistent, so the real-world image will still have full detail. The top view is a bit green with a 50% brightness reduction and reduced gamma.

Screen Uniformity

To learn how we measure screen uniformity, click here.

The H27E6 may be inexpensive, but it does not sacrifice quality. My sample had no visible hotspots or glow and posted a very low 6.70% score in the uniformity test, which is on par with premium displays costing much more. This is excellent performance.

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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.