Asus ROG Swift PG43UQ 4K Gaming Monitor Review: Jumbo Screen, Extra Bright

A massive gaming monitor with 1,000 nits, HDR, Adaptive-Sync and 144 Hz.

Asus ROG Swift PG43UQ
Editor's Choice
(Image: © Asus)

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We tested the PG43UQ in its default Racing picture mode. It allows adjustment of all image parameters except color saturation. To access that slider, select the User mode. Color gamut accuracy was good enough that we didn’t need that control.

Grayscale and Gamma Tracking

We describe our grayscale and gamma tests in detail here.

Given the enclosed calibration data sheet, we were a little surprised by the default grayscale measurement run. The Warm Color Temp is indeed a bit warm with red errors visible from 40 to 100% brightness. For a premium screen, we’d expect better out-of-box performance. The good news is the gamma trace is essentially perfect.

Calibration of the RGB sliders brought grayscale tracking to the reference level with an average error of just 0.39 Delta E (dE). That’s about as good as it gets for any display. Gamma remained solid with a value of 2.21.

The GameVisual menu contains an sRGB option that accurately covers the sRGB color gamut and locks out all image controls including brightness. Its grayscale tracking is also too warm with a chart that looks much the same as the one from Racing mode. Gamma is a bit light at the 10% step, but it tracks well otherwise. We opted for the larger gamut of Racing mode for SDR content and suspect most users will make the same choice.


Acer’s CG437K is the king of our out-of-box grayscale accuracy test. 0.37dE is as good as it gets. With scores of 4.21dE for sRGB and 4.50dE for DCI-P3, the PG43UQ is noticeably behind the other screens. Since its gamma and color gamut are very accurate, this isn’t a huge issue, but we suggest users try our RGB settings at a minimum. With a few changes, we achieved a professional-grade score of 0.39dE. In any case, gamma is without flaw. A 0.05 range of values and a 0.45% deviation is as close to perfect as any premium monitor can boast. 

Color Gamut Accuracy on Asus ROG Swift PG43UQ

For details on our color gamut testing and volume calculations, click here. 

The ROG Swift PG43UQ’s native color gamut is DCI-P3, and you can see that it covers a large part of the triangle and comes quite close to all our test targets. Red is slightly over-saturated, and other colors are on-point. Secondaries are slightly off in hue, but those errors are not visible to the naked eye. Our recommended settings (page 1) brought all points into the target boxes with only a slight under-saturation in the green primary.

sRGB mode follows the spec closely with a little over-saturation in red and slight hue errors in cyan, magenta and yellow, but these errors cannot be seen by anything other than our test equipment.


As shown in the first chart, all the monitors here provide excellent DCI-P3 accuracy. While we consider 1dE to be a measure of top performance, any score below 3dE means there are no visible color errors. The ROG Swift PG43UQ achieves that without calibration and our adjustments yielded just a slight improvement.

The PG43UQ has few equals when it comes to DCI-P3 coverage. Asus claims 90%, and our sample measured up. Mainstream users will be happy with anything over 80%, but at the 90% level and above, color becomes incredibly vivid. Given this number and the invisible errors we recorded, the PG43UQ is more than qualified for professional use in video post-production or high-end graphics. That it costs less than a true professional screen like the 27-inch CP7271K is notable.

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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. 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.

  • PapaCrazy
    Extremely tempting but price needs to go (way) down and GPU power up for such awesomeness to be readily adopted.
  • Kridian
  • uwhusky1991
    Seems that TV manufacturers are missing an opportunity. TCL sells a 43" 4k tv for about $200. You can't tell me that it costs 9X more to make a 144hz 43" tv. Asus sells it for that much because there aren't any mainstream options. TV companies see the 43" TV size as a low end product whereas it's a high end price point for PCs.
  • Tanquen
    VA / W-LED, edge array for $1500 when TVs of this size can be had for $300-$400?

    You can get the XG438Q now for like $1000 why get this?
  • shemsureshot
    Looks awesome and probably something I would have bought had I not recently purchased the LG CX 48 inch TV as a gaming display. As someone who uses a large display with my pc I would say the size isn’t much of an issue and after a while even the 48” screen stops looking too big. I’m currently looking for a good deal on a lap board for the keyboard and mouse, there aren’t too many on the market at the moment even though these large displays are creating a need for them.
  • CliveStaples
    How do you think this monitor might be better than your CX? I thought the CX was a shoo-in for best gaming display with with the OLED screen, g-sync, 120hz, but I would love to understand where this Asus monitor compares favorably.
  • hermanbaggins
    I do alot of drone racing. Its critical to have a fast video feed from our drones to our goggles otherwise we wont have enough time to react and crash into everything. We deal in millaseconds delays also. With that said 1ms response time vs previous version of this monitor 4ms you will tell the difference when gaming. Im not sure if there is any monitor this size with these stats with freestink.
  • menka69
    is this not 144hz compatible with gsync?