I'm planning to install 3 6970 on it. Will it allow the 6970 reach max mining potential? The thing I'm concerned with is it says:
2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2) (Note 1)
1 x PCI Express x16 slots, running at x8 (PCIEX8) (Note 2)
1 x PCI Express x16 slots, running at x4 (PCIEX4)
Would the "running at x8" and "running at x4" affect MHash rates? or I can ignore that and just plug the card in any PCIe slot?