What is the meaning of this.

x8/x8 3.0 is just fine for SLI (that's x16/x16 2.0, but even x8/x8 2.0 would be fine).

It would only be a problem if one of them was x4. SLI can't be enabled if one of the GPU's is in a x4 slot.

The graphics card is GTX 670 and it's pci-e 3.0. Does that make a difference or no?

Yes I have Ivy bridge. i7 3770 3.5ghz. I remembered reading something about ivy bridge only being compatible with the pci-e 3.0 that's one of the reasons that pushed me towards getting it. That was a good link thanks.

/edit: Those aren't SLI though are they? Does it make any difference in SLI?

For SLI only the GTX 600 series + IB + PCIe 3.0 MOBO = PCIe 3.0 otherwise you're running PCIe 2.0 on say a GTX 500 series or before.

Single HD Monitor: SLI or CF PCI Express 3.0 x8/x8 vs PCI Express 2.0 x8/x8 no differences in performance; see my prior link.

It takes 4-WAY SLI GTX 680 + Multiple Monitors + High Details + High AA = to see any discernible differences.

Best answer selected by phunky_21.

This topic has been closed by Nikorr