Bench A should be banned. I never got reproductible results. Last time on dx11 in Test3 I was sitting in a whole with 200 guns pointed at me, same time GPU usage drop to 77% and CPU usage freezed at 100% as I was running in the same time Intel burn test in the background:3eyes:. Why are you afraid of BenchB?? Give it a shot as it runs pretty smoothy on my rig with one 5870 @dx11, 1920x1200, MSAA 8x, Dx11 high, rest on high (check screen). CrossfireX will blow a GTX 480 without problemz in this bench. If I compare my 38.4 (with one 5870 @default) with morbias 46.4FPS (his GTX 480 @ 825 / 1650 / 4200) I get a performance increase, GTX 480 vs 5870, of only 17.24%. I disabled/enabled CrossfireX and renamed LP2DX11.exe to Metro2033.exe and managed to run BenchA. BenchB crashed instantly. Now I tried to run again Bench A and it freeze in the menu without any kind of error message. If I press escape jumps to desktop without any errors:3eyes:. I have Vista 64.