yes, DFI is definately the way to go in my opinion. Benchies have shown that having dual X16 slots for SLI did basically nothing for performance. The vid cards are really not even close to saturating X8 yet which is why you will see no difference. With that said, the DFI will give you OC Superiority over the Asus any day of the week. By the time vid cards really need the dual X16, it'll be time to move to another socket.