Hey everyone, I am building my pc and I would like to know how SLI excactly works. For example, I have an MSI GTX n660 TF lll 2ddr5 and was planning on buying either the asrock pro 3 z77 or the MB MSI Z77A-G41. Now my question is how sli would work with these motherboards, because they only have one PCI 3.0 port.