do you have cool n' quit enabled?? i know that with my p4 on speed step technology it keeps my processor at a 14x multiplier running at 3.5ghz when i'm not at load, and then jump up to 4.5ghz when i need it. but i don't know if you have cool n' quiet or not.. hell, i'm not even an a64 expert,i just think it may be something like mine.