Brightness and contrast
The maximum brightness immediately shows a big difference between the cheaper AOC G2590VXQ and the more expensive 144Hz models. The former barely achieves the promised 250 cd/m², the other two promise 400 cd/m² and achieve respectively just below (G2790PX) and amply (G2590PX).
Looking at the minimal brightness (important if you are playing in the dark), we see that the G2590VXQ also seems to have a somewhat simpler backlight control, so that it can't fall below 90 cd/m² - that's pretty bright when the light is off. In comparison with the competition, however, it is still clearly notable compared to the 124 cd/m² of the Iiyama G2530HSU; the G2590PX also achieves significantly lower brightness than the competitor G2488HSU-B3.
- Maximal brightness
- Minimal brightness
The results when we adjust white to (or as close as possible to) 150 cd/m². AOC doesn't put down the best black values, which is probably also due to the default setting. The “Shadow Control” adds little here, it can still be darker. So you have to manually adjust the settings.
- Black at 150 cd/m²
- Black max.
The somewhat modest black value produces a contrast that sticks just below 1000:1 in the cross-sectional measurement. In the checkerboard measurement the G2790PX comes out last, but acceptable.