I just put together a system with a Shuttle AK38N mobo and an AMD XP2400 processor. I get it all put together and Windows shows that the processor is an XP1800 running at 1.5gHZ (should be 2.0). I know this is due to the FSB being set too slow (it's set to 100 in the BIOS) and it should be set higher. I have found the setting in setup, but it is greyed out...not selectable. I know this is a very hardware specific question, but wondered if anyone knows how I can change the FSB speed so my processor will run at full speed? I would guess I've emailed Shuttle, but who knows if they will ever get back to me.