Viotek GFI27DBXA 27-inch 180 Hz Monitor Review: Dripping With Color

Hidden value gem

Viotek GFI27DBXA
Editor's Choice
(Image: © Tom's Hardware)

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Our HDR benchmarking uses Portrait Displays’ Calman software. To learn about our HDR testing, see our breakdown of how we test PC monitors.

The GFI27DBXA doesn’t provide HDR conveniently but does provide it competently. For best results, you should turn it on manually, then max the brightness and engage DCR dynamic contrast.

HDR Brightness and Contrast

Viotek claims “HDR 600” in its marketing, which is not an official certification, by the way. However, the GFI27DBXA couldn’t hit 600 nits with HDR in our tests, whether measured field patterns and windows. The latter was less bright, thanks to the dynamic contrast option. However, the GFI27DBXA is still the brightest monitor in our sample group. 486 nits is perfectly respectable, especially for $320 (opens in new tab). DCR delivers an excellent HDR black level that ups the contrast ratio to an impressive 5,122.8:1. That’s about as good as it gets at this price point.

Grayscale, EOTF and Color

With DCR on, the GFI27DBXA rises slightly too slowly from black in the HDR luminance test. Some shadow detail was hard to see, though not completely obscured, during gaming. Values are right on spec from the 45% brightness mark and up, with a tone map transition at 65% brightness.

Grayscale errors are minor with a slight coolness that creeps in at 60% brightness. There are no calibration options in HDR mode, but we were satisfied with the image.

Color tracking is a little better in HDR mode than SDR. Green hues are right where they should be, and the slight oversaturation seen throughout the gamut makes the image pop. There are a lot of monitors that support HDR, but the GFI27DBXA is one of the few that do it well. Performing at this level for its price is a nice bonus.

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.

  • waltc3
    400 nits is actually very poor for HDR. It's at the very bottom of the HDR scale, actually. My current monitor is 1015 nits, DisplayHDR 1000 certified--and just off my previous 360 nits "HDR" monitor--I can tell you the comparison is night and day. If you want HDR support, look elsewhere, imo. Just thought I'd mention this as Windows HDR support is now actually pretty darn good these days (latest Win10 builds/Win11 betas). Game developers are at last getting the hang of it!
  • Jackson1078
    So your monitor is brighter? Big deal. That still doesn’t change the fact that this monitor’s HDR implementation is a lot better then most in its price range and a good number above it. It will still deliver a solid result.