Supported resolutions in games tend to follow a 16:10 aspect ratio predominantly (widescreen aspect ratio).. However, other (16:9) resolutions do exist such as 1920 x 1080, 1776 x 1000.. Benchmarks are mostly done with a 30'' monitor though so as to test the game on every possible resolution on a single display.. Therefore you'll see results based on resolutions such as 2560 x 1600, 1920 x 1200, 1680 x 1050 etc.. Furthermore, games are tested at the highest resolutions possible so as to eliminate the CPU role and judge the true strength of the video card..