Or drop the Raptor and get the 8800 GTS 320, with the Q6600. I have the raptor and see no performance gain whatsoever on games and most other applications. The only difference is that window's loads faster. If there is a difference between my older SATA drive I can't see it.
However, if you want to keep the raptor and save some money, look into the X1950PRo as well, they are around $136 and will be pretty good in the gaming department.