So the only motherboard supporting full PCIe 2.0 16x links to four slots is the Asus P6T7 SuperComputer, which, technically, is a workstation class motherboard (although its a CEB board, it will apparently mount in ATX position).
But my question: will it work with 4 ATi GPU's in Crossfire, aka QuadFire? I know the X58 Northbridge only supports two full x16 links, so it must be that one or both of the n200 southbridge chips is supplying the x16 links.
Does this odd setup mean it wouldn't support QuadFire, or does it affect it at all? Anyone have any idea?