Theo over at the Inq has the goods on the 4X4 chipset that AMD has asked nVidia to produce for the AMD's quad-father launch. If four graphics cards, a hardware router with four gigE ports, & the possibility of two, six-drive, RAID5 arrays doesn't make your mouth water, you really shouldn't be reading this website. Either that, or you should have your pulse checked ;)

"In case you're wondering how this all is possible, the answer is simple. The 680a chipset is nothing more than two nForce 590SLI chips placed on the same motherboard. Hypertransport is very flexible and ATI Crossfire is not mentioned anywhere."