i also have a q9450. i had a lot of trouble pushing it and had to do a lot of tweeking on the voltage's to get it stable. i'm not on the comp right now but here are the facts...
q9450 on a foxconn blackops x48 chipset at 3.2 ghz
400 mhz fsb with 8x multiplier
it runs DDR3 on duel channel at 1600...