A bit overkill? Maybe. Can it run Crysis? Definitely. 23 x nVidia 295 GTX's in a single system designed for Folding@Home. It's a rendering farm specifically built for the project by Stanford University.
In the video, it lists: 17 in the rack (4 lots of four and a lone one at the bottom). 4 are awaiting power supplies. 2 in a home computer. It sounds like the lone one will be kept.
Yea somebody on a Finnish forum said that it produces about one kilowatt more heat than a regular electric sauna stove. And a sauna stove is able to heat up a small room to 100°C.
Seen this before, its interesting, People, (including myself) may think it must consume so much power, what a waste, However, he compared various other hobbies, and actually, its not bad considering it. I think its a cool idea, although, I still think its a waste, why not just give 2 to various people for them to fold with in their home computers, and so they can use them aswell.