pci e 3.0 cards are compatible with pci e 2.0 slots
no, you're not forgeted
I asked an IT guy here and he said that they would be compatible, but it couldn't use the card's full potential. He said the investment I'm making for this kind of card isn't worth it if sandy bridge doesn't utilize that.
So if I use the GTX 770 which uses up to PCIe 3.0 with a processor that only utilizes PCIe 2.0, will I not actually be getting the full benefit of the GPU upgrade? I'm not forgeted, but it's not up to what it should be?
Ignoring the utilization of the new PCIe version, how would performance change between an i5-2500 and an i5-3570?