I have question. I had proc intel i5 2500k and nvidia GTX 660. I had read somewhere, and it say if I had 2nd gen of intel i series, then my GPU pci is downgraded to 2.0 instead of 3.0. Is that correct? and i had heard amd is running in PCI 2.0, is that correct? So i wondering, for me better to upgrade my VGA to 970(which i have waited for a long time ago and save my money to buy it) or instead buy AMD R9 280x? I dont think I would upgrade my cpu until I had enough money to get an intel 2011-3 proc. thanks for listening to my question and your advice. btw this is my full spec pc (i build it in early 2010) I5 2500k OC to 4.3Ghz MSI z 77a g43 2x8GB corsair Vengeance Pro MSI GTX 660 twinfrozr corsair vs 550