Just wondering if it is possible to choose which PCI-E x16 slot I would want to use with Rampage Formula for a single card setup or if I would have to use the top slot? I know that this board supports crossfire and therefore in a crossfire setup the lower PCI-E x16 slot would be usable but if I was using a single card Nvidia setup, would I be able to use the lower slot? Sorry if this sounds like a stupid question but I have never used a Crossfire or SLI board before and would like to know before I buy. Any help would be greatly apprecated. Thanks.