I usually abstain from "No, you're wrong" responses, but re-read this thread, particularly dman's longer explanation in reply to himself. He's accurate. Your

I usually abstain from "No, you're wrong" responses, but re-read this thread, particularly dman's longer explanation in reply to himself. He's accurate. Your attempted nit-picking is not. 990X et al are CPU chipsets. Not GPU chipsets. This is about the integration between the graphics cards and the CPU, not about inter-graphics card protocol. EDIT: A better way to put this is that they're not licensing SLI to AMD, AMD has no use for SLI, they have crossfire. They are providing a chip that integrates with AMD CPU chipsets to motherboard manufacturers. I hope that's more clear.