Hi, I just bought a ivy bridge cpu that was bundled with a z77 motherboard. I'm simply wondering should i invest in a PCI 3.0 graphics card to take advantage of ivy bridge in order to trigger a faster response between the cpu and the gpu. I heard its irrelevant as of today but it may change for the better in the future? I'm thinking of either a 7850 or a GTX 670 ( both PCI 3.0) over crossfire 6850s ( PCI 2.0). I will be playing games like D3, GW2, BF3..etc.