DailyTech's got a round up of the sites that are carrying the coverage of the Foxconn 7900GX2 setup that's been seen at CeBIT. They've got links to benchmarks as well. I can't even imagine what you'd be able to power with four 7900GTX GPUs & 2GB of video RAM :o

"The cards demonstrated by Foxconn were running 32xAA. The Quad SLI system consumes an incredible 650W during heavy operation. As we reported yesterday, each Quad SLI card is expected to retail over $1,000 and require an SLI x16 motherboard."