hi everyone i was wondering if i can run 2x 285s in sli but using the 1st and the 3rd pci-e slot mainly becuse if it in the 1st and 2nd there will be to close for my likeing it says in the instructions that the 3rd slot only runs 8x and not 16x so will one of the cards run half the speed

thanks everyone

(this is an upgrade and not sure if i shuld do it by the way)