If I were you I would hold out just a little bit longer, the penryn quad cores are comming out. The q9450 will use almost half the power of a q6600 and be 5-20 percent faster depending on applications. I think some of them are comming out in March. If you want a fast dual core now, then go with an intel wolfdale, the e8400 is around 200 bucks and is fast. It is also 45nm like the q9450.