Well the CES displays were as much Maingear's as they were Nvidia's displays so the setups they were using were, needless to say, vulgar in terms of hardware not so much in terms of necessity but because of what they were trying to sell. If you look at the twitter preview photos and the current CES articles, it mentions that they were in fact inside Maingear systems. For those who don't know, Maingear is kinda like Alienware. They are a boutique builder of custom VERY HIGH END PCs. http://www.maingear.com/custom/computers/
It seems the single GF100 display was Maingear, the triple SLI water was Digital Storm and one of the displays was Alienware. lol I hope they have enough stock left for end consumers not just for the OEMs !