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Asus ROG Swift PG27UQ 4K Gaming Monitor Review: Worth Every Penny

The Asus ROG Swift PG27UQ is one of the best (and priciest) 4K gaming monitors around.

Editor's Choice

HDR Grayscale, EOTF & Color

To run HDR benchmarks, we add an HD Fury Integral to the signal chain to simulate HDR10 content from our Accupel DVG-5000 pattern generator. This enables us to measure the PG27UQ’s grayscale in five percent increments, EOTF (electro-optical transfer function, for turning digital code into ligt) tracking and color gamut capabilities within a Rec.2020 container.

Grayscale Tracking & EOTF

We measured both full-field and 10 percent window patterns and found the latter to offer better accuracy. Grayscale was essentially perfect from bottom to top with only a slight shift to blue in the mid-tones. The elevated errors were caused by a slight rise in the EOTF near the clipping point. This is not visible to the naked eye. The PG27UQ has the most accurate HDR grayscale and luminance tracking we’ve measured yet.

Color Gamuts Within Rec.2020

Most HDR displays take a somewhat interpretive approach to color tracking to make the gamut seem as large and vivid as possible. The PG27UQ stays fairly close the mark but bumps up saturation a bit. While this isn’t strictly accurate, it is closer than any other HDR monitor we’ve tested. All color points were within sight of their targets regardless of the base gamut. It even came shockingly close to the outer limits of the Rec.2020 triangle. If you want to see what extended color is all about, this monitor is a definitive example.

Ultra HD Blu-rays

We want to be clear that the PG27UQ is not just a gaming monitor. It can do everything well, and that includes watching video. Hooking up our Philips BDP-7501 Ultra HD Blu-ray player revealed that it is a perfect display for watching the latest hi-res content in HDR. It handled 24p film cadences correctly, so there was no stuttering like that seen on monitors that convert this material to 60p. It also switches automatically into HDR mode when necessary without user intervention. If you find the picture too bright, go into the Color menu and reduce the Reference White slider. It’s normally fixed at 80 nits, which is fine for most content.

Planet Earth II is a reference-level demo for any Ultra HD display. I’ve watched it on at least 20 different projectors, monitors and televisions, and none can compare to the PG27UQ. The extra color was evident in blue skies, deep red highlights, and the rich green of trees and vegetation. Detail was made even more impressive by superb contrast afforded by that full-array backlight. I looked for the halo effect which is a characteristic of multi-zone units and saw it occasionally in the opening of the “Cities” episode, but starfields did not produce the artifact. In this regard, it is superior to the Dell UP2718Q.

To check out shadow detail and black levels, I watched A Quiet Place, which is full of dark material. Blacks are truly black on this monitor, and I mean plasma-level black. It’s the first LCD I’ve seen that can go toe-to-toe with my reference Pioneer Elite TV. HDR has truly brought back the amazing dynamic range we enjoyed in the CRT era. There are many displays that feature HDR and extended color, but I’ve seen none that implement it as well as the PG27UQ.

MORE: Best Gaming Monitors

MORE: How We Test Monitors

MORE: All Monitor Content

Christian Eberle
Contributing Editor

Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors.

  • hixbot
    What about the fan noise?
  • mlee 2500
    Won't catch me buying a monitor with a fan inside. I don't care how great it is otherwise. Not too mention 4K at 27" is kind of a pointless waste of the GPU resources you use to drive it. Even at 28" I find my XB280HK too small for most games at just makes all the hours that game developers and artists put into their product become pointless when the details are too small to notice.

    I've come to the conclusion that 30" is probably the sweet spot of not extending too far beyond your peripheral vision while still being large enough to make 4K worthwhile (I had a 31" LG and it was *too* big, IMHO). Of course this all assumes a rational 16:9 aspect ration. Don't even get me started on these super wide models with a paltry 1440 vertical. Seems like a neck injury waiting to happen.
  • jonhart
    That's not how net worth works.
  • Posty351
    27 inches?? Waste of space if not 32" or bigger.
  • jas1nt
    Just buy it.

    Ironically, you'd need an RTX 2080 Ti too.

  • AlistairAB
    Get the non-HDR version about to be released. Only $1300 instead.
  • milkod2001
    This is something i was waiting for ages. Just one thing. I'm not 13years old any more, wish i was :). I don't need that stupid holographic or RGB lighting at the back. Just regular adjustable stand. I also don't need HDR, it's immature gimmick at the moment. I also want 32'' 4k version. 27''4k is a joke. Also price should be more down to earth $1200-1500. Gonna wait a little bit more i guess.
  • milkod2001
    Go ahead and read reviews of actual owners on newegg. There is a loud fan included. This is not acceptable at this price.
  • Joe Black
    Best thing about it... It's not curved. Amiright?
  • moogleslam
    @Joe Black - I wouldn't call that the best thing about it, but sure, there isn't much need for a 16:9 27" to be curved. Not sure if you're against curved in general, but there's absolutely a place for it. a 21:9 34" or a 32:9 49" absolutely has to be curved.