I have been comparing my doom 3 performance with the performance of another TF member, FoLeafClova, who owns a 9800 pro. We both tested on 1280x1024, 4x AA, 8x AF, High settings. The results were stunning. His 9800 Pro totally blew away my more expensive X800 pro. Here are the screenshots to prove it.
Thats with the 9800 pro
Thats with my own X800 Pro.
Why can he retain a playable framerate at those settings while I can't play on anything above 1024x768 and no AA. I guess its just another sign that the X800 pro is suckage.