I have managed to get 1800 MHz 200 FSB x 9 Multiplier cant be set from Sempron 2200+ (1500MHz) & RADEON 9600 pro 402 GPU & 241 MEM Out of my system without any problems to date. The mem speed DDR400 cant be messed with in the bios otherwize it goes to 133MHz instead of 200MHz and causes some system instability and doesnt allow Graphics overclocking. Motherboard - Jetway V600DAP