i5 760 vs i7 2600:
http://www.anandtech.com/bench/Product/191?vs=287
As I said before, yes it's better, but with a new motherboard needed it's gonna cost you ~£400.
http://www.anandtech.com/bench/Product/191?vs=287
As I said before, yes it's better, but with a new motherboard needed it's gonna cost you ~£400.