I want to purchase a motherboard with the X48 chipset but none of them have SLI, yet they all advertise crossfire. I came across a discussion on Anandtech that claims SLI works perfectly fine with Crossfire motherboards. Specifically the new Rampage Formula by Asus. Is there any truth to this has anyone tested it out and had any success? Does it hinder performance if you were to use 1 nvidia graphics card in a crossfire motherboard?