While this is true, R600 was certainly too late to use PCie 2.0. I guess it's possible that a R6x0/RV6x0 refresh part would be on PCIe 2.0, but I wouldn't put too much stock in that idea.Motherboards lacking the support shouldn't stop anything, though, as at least if I understood it right, PCIe 2.0 is backwards compatible "both ways" (as in, 2.0 cards work in 1.0 mobos and vice versa)