I just installed a evga gts450 graphx card as an upgrade for a 9500gt. I have vista 32 4 gigs of ram and a intel core 2 duo 2.0 gpu..my board number is 0RY007 so i know i can only use core 2 gpu's can anyone tell me is my current processor is enough and what one I can upgrade to, i see alot of options but need a real solid upgrade of GPU, my pc is a dell 530.