Yeah one card wouldn't scracth the PCIe bandwidth.
I know both SLI and CrossFire both heavyly saturate the PCI express bus dramatically, even on the new nForce4 Amd/Intel x16 chipsets . Does o/cing the bus even rememdy that problem? Can someone with a SLI or CF setup do a benchmark please? Something mainly gpu-limted like 3dMark 03, 05, or 06?
Does o/cing the PCIe damage the card?
I know o/cing an AGP bus above 66mhz does eventually damage the card.