Call me a deserter if you want...
...but I'm switching back to Nvidia. I had too many problems with this card, and I'm getting really obvious artifacts in everything now, OC or not.
I'm getting an EVGA 8800GT, btw.
Thanks everyone for all the help.
Crysis benching (\bin32\gpu.bat)
Average FPS; average of 3 runs (everything on 'medium', no AA, 1680 x 1050):
600/800: 42 fps (standard PRO)
743/828: 50 fps (standartd XT)
880/950: 60 fps
905/945: 62 fps
918/945: crashed within 1 minute.
I'm cpu limited - a quad would do better i guess.