neliz Actually, SLI doesn't have too much to do with this.



If there are no PCIe switches between the CPU and the card, the card will run at it's maximum speed, in that case GEN3.



I think you're referring to the fact that SLI NEEDS switches on 1155 to operate, otherwise you'd be stuck with a fixed configuration 8x8. The switches are there to redirect the traffic to the first card in case the clockgen in the PCH doesn't detect a card in the second slot.

Seems to be some Crossfire-only boards that run 3.0 on 2.0 bridges(Biostar). WTF is going on or why, whatever, I am not sure.It's like when adding IVB support to BIOS, something weird happened.I almost want to say that AMD allows PCIe 3.0 for VGA on PCIe 2.0 bus, regardless of bridges or what have you. If it's just encoding or whatever, I don't know. X79 is why I want to say that..you get PCIe 3.0 with AMD on any X79, NVidia on X79..not so much.Don't forget x16/x4 boards, too.(support Crossfire, but not SLi, no bridges)Not MSi products, but as you know, I've used very few MSi boards. ;)Thanks very much for the input though, when it comes to MSi, of course your word is king. ;)