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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 34WQHD240-C accepts HDR10 signals and switches modes automatically with two presets available, HDR and HDR Peak Brightness. Appropriately, the second one is brighter and the option I used for both testing and gameplay.
HDR Brightness and Contrast
Monitors in this category are all very close to one another in peak HDR brightness except for the Asus which pushes its panel a little harder for more highlight impact. The visual difference is small, but if you want every last nit, the PG34WCDM is the one to choose. The 34WQHD240-C is on par with the rest and in practice, it delivers HDR that’s every bit as good as the very best. Regardless of peak luminance, black levels and contrast cannot be measured.
Grayscale, EOTF and Color
The 34WQHD240-C maintains its high accuracy in the HDR tests. Grayscale is without visual error as all values are below 3dE. The EOTF trace starts out slightly dark until it meets the reference line at 35% brightness and maintains a consistent rise to the tone map transition at 65%. This is the correct value for the measured white level. All detail present in the original content will be clearly rendered from the deepest shadows to the brightest highlights.
HDR color is generally and linearly over-saturated with even coverage of the DCI-P3 gamut and bonus color at the triangle perimeter. Hue points are on or close to their targets and there is no loss of detail or clarity in any part of the image. In the BT.2020 test, the same over-saturation is seen until the 34WQHD240-C runs out of color at 95% red, 80% green and 95% blue. This is consistent with all the Quantum Dot OLED monitors I’ve tested.
Test Takeaway: The 34WQHD240-C delivers stellar HDR with accurate grayscale, EOTF and gamut tracking. Color is generally and consistently over-saturated which delivers extra impact without muddying detail. Contrast is unmeasurable like all OLEDs and peak output is on par with the competition. You will enjoy the best possible HDR from the Corsair, and any OLED monitor.
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