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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.
Applying an HDR signal to the GM32-FQ switches it over automatically and opens up three additional picture modes. They look similar to one another, and one of them, Custom, allows RGB, black level and white level adjustments. All modes leave the brightness slider enabled so you can dial in the backlight to your preference. This is a nice touch found in very few HDR monitors.
HDR Brightness and Contrast
The GM32-FQ is a good deal brighter than its 27-inch cousin. That alone is a reason to choose it since it only costs a little more. HDR contrast is slightly higher too, at 1,234.1:1. Like the GM27-FQS though, it does not have dynamic contrast available in HDR mode. None of the screens in this group have the feature but the two VA panels have better native contrast which makes their HDR images pop more. The GM32-FQ adds a bit of color saturation but not more range or deeper blacks.
Grayscale, EOTF and Color
When I measured the GM32-FQ’s three HDR modes, they all exhibited the same grayscale tracking with slight blue errors. The principal difference was in the EOTF traces. Movie comes closest to spec with some dark areas in the 10-40% range. Custom and Game were much darker in these areas, enough that some detail was clipped and therefore invisible. The most detailed HDR image is in the Movie mode, which is what you’ll want for quality gaming.
HDR color tracks much the same as other HDR monitors with over-saturation at the inner points in both the DCI-P3 and Rec.2020 gamuts. Content mastered to either standard will look natural with a little extra red, not a bad thing. Hue targets are on-point, and the saturation targets are distributed evenly. This ensures that all color detail will remain visible. This is very good performance. If there were more contrast, it would be excellent.
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