I am going to build a computer which will be used primarily for gaming, but also a lot for day to day application like word processing, media and surfing the internet. However, I don't know whether or not to buy a Q6600 and overclock it to 3Ghz, or buy a Q9450 and overclock it to 3Ghz. I really, really want to save as much money as possible, so will a Q6600 be and good enough for gaming with an HD 4870? Should I spend more money on the Q9450?