TheCrimsonStar
Tech Monkey
How about an ASUS MARS II GTX 580 SLI? 2 gpus on one PCB. They claim it's the fastest single card offering on the planet right now.
http://hothardware.com/Reviews/ASUS-MARS-II-Review-GeForce-GTX-580-SLI-On-One-PCB/?page=2
http://hothardware.com/Reviews/ASUS-MARS-II-Review-GeForce-GTX-580-SLI-On-One-PCB/?page=2