1: it wont work with your motherboard. thats first thing.
2: processors, even if OLD. retain their absolute performance through out. so not to worry as if you are buying one.
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"