I've never ran into this problem. my friend has a compaq that came with a 1.2 ghrz processor, im guessing its an MP. he upgraded it to a 2200+ XP, but when he installed it, its only rating it as 1.3 instead of 1.8. my guess is that its either the processor or the motherboard. i think its the motherboard not being able to push that much. any ideas?