Oki. Well I have 6600gt pcix, amd64 3000+ ~2,4 GhZ, 1,5 gigs of ram and the resolution was 1024x768 (which I always use). This hardware is becoming low-end very soon, if it already isn't. I always put AA on the highest. I don't know what the FPS was because I never checked it and Doom 3 isn't on my comp anymore so I can't check it either.
I'm actually thinking about upgrading to 6800 ultra soon. Just need to save some money first
