Currently I am running a i7 950 (LGA 1366) with SLI GTX 670's and a GTX 560 TI 448 for PhsyX. I know that I am running at x16-x8-x8 and am wondering if the set up of running the GTX 670's and taking out the GTX 560 TI 448 so that the 670's running at x16-x16 instead of running all 3 cards.