The same reason a personal computer needs 4gb RAM or a terrabyte of hdd space.... to be able to brag about it to your friends/online accomplices
I really don't see a use for it now, seeing as how most games can run comfortably on a high-spec, single card. In the future, maybe something like that will be needed, but then the video cards are going to be upgraded as well...
4xSLI 1gb Nividia cards, anyone? lol
Edited by Heretic Monkey, 05 April 2006 - 04:06 PM.