I have a Core 2 duo processor E4500 which is 2.2 GHz and 800 FSB , on a Intel 945 GCNL mother board with a 2GB DDR2 RAM. I have also installed a Graphic card Nvidia GT 210 and the OS is Windows 8 pro. I wanted to have an up grade without having to change the mother board which has the old 775 CPU socket. Shall I go for the E7600 processor which available cheap second hand or a compatible AMD processor. Please help.