I have and X800 Pro and have major Doom3 lag problems even after Catalyst 4.9 and the other tweaks mentioned around the net. My settings are 1024x768, High graphics, 2xAA, and no AF. I am so mad because I bought this card that is either crap or there just isn't driver support for these graphics intensive games. To all people who suggested I get this card, WHAT GOOD IS A HIGH 3DMARK03 SCORE WHEN YOU CAN'T PLAY GAMES AT A DECENT FRAMERATE?