Welcome to Alienware's Video Array...

"Video Array, Alienware’s exclusive patent-pending innovation, is a hardware and software solution that enables two off-the-shelf PCI-Express video cards from any manufacturer to process graphics commands in parallel, thus increasing graphics performance by up to 100%. Video Array is more than just the presence of two video cards in one computer system; it is an innovative and intricate combination of technology that includes 2 or more video cards, a custom power supply, and Alienware’s patent pending X2™ motherboard, which can support the high demands of high performance CPUs and multiple video cards."

http://www.alienware.com/alx_pages/main_content.aspx

I am sure that this is old news for some of you, but I figured I would post it anyway, since, hopefully, it should be released this year. I tend to admire Alienware products from a distance, due to the often high price, but I would probably buy this.