Agreed with hunter315. I would only spend $1500 max and go the i7 920 route. Then 2 to 3 years from now you can build another brand new system with the leftover $1500 from your original budget. Saves you a lot of money and does not sacrifice any noticeable performance.
wow and the Seagate Barracuda 7200.12 ST3500 is extremely cheap and beats the velociraptor in the charts thanks for the info hunter and as for the cpu u wouldnt notice the difference if i overclocked a 920 over a 950?