Sorry for the noob question,im still kinda new to building comps,i have a asrock p67 extreme4 gen3,my question is I have a msi gtx580 pci 2.0 what slot do I put this in, I have it in the first pci slot but I think its 3.0pci would it afect performance? So if someone with same mobo can tell me where they have therir gpu card that would be helpfull