Quickly tested on : XP Pro SP2 Athlon XP 4200+ (2.7GHz) 512MB DDR 416MHz 2.5, 2, 2, 11 FX5900 @ 485/935 Abit AN7 3DMark 05 66.81 ....1250 70.41 ....1026 Counter Strike: Source Benchmark 66.81 ....119 fps 70.41 ....97 fps Quake3 Demo001 66.81 ....360 + fps 70.41 ....329 fps These appear to be optimised for 6800 series cards not FX sadly.