Its kinda weird, disabled AGP 4x under the BIOS and my 3DMark 2000 scores shot up from 5900 something to 6300+. Switched back to 4x and got the low score, back again to 2x and bingo, high score. I'm using the Feb. something 2001 BIOS for my mobo. Detonator 6.50. Rig is below.