If you’ve ever felt compelled to hook up eight computer monitors at once, then the Matrox M9188 PCIe x16 is the card for you. It runs $2,000 and was intended for enterprise workstations but I’m sure that you could find a lot of other uses for something like this.
You can check out the (impressive) full specs at the Matrox website.
No gaming performance at all, since it wasnt meant for that in the first place.
The eyefinity from AMD is awesome though, check out hardocp.com and their forums to see it in action, which is amazing.