Is this a company built computer? In 99.9% of cases you can't overclock a company built computer. You need to build your own computer.
No offense, this computer seems like it's going to cost a lot more than it should. The 975 is extremely overpriced, and 12GB of ram is overkill. The i7 920 cost 1/4 of the price of the 975 and can reach 4GHz with ease on a good cooler.
No offense, this computer seems like it's going to cost a lot more than it should. The 975 is extremely overpriced, and 12GB of ram is overkill. The i7 920 cost 1/4 of the price of the 975 and can reach 4GHz with ease on a good cooler.