Re: which is better ?
I would keep your c2d for now. I'm guessing your computer is for gaming. I see no reason to change it out now. You are good for some years to come. Use the money for another use
(My Computer) Antec900 Case, E8400 OC'd @ 3.83GHz, TuniqTower 120, 4GB 6400 DDR2 850MHz (Corsair XMS2), EVGA 9800GTX Superclocked 770/2300, 620W Corsair PSU, x2 WD500GB RAID 0, WD250GB, EVGA 680i SLI Mobo, Vista Home Premium 64Bit