Hello, im just wondering if this would work.

the mainboard
http://www.sapphiretech.com/presentation/product/?cid=2&gid=1089&sgid=1099&pid=1128&psn=&lid=1&leg=0

the gpu's would be referenz 7970's + waterblock

and i was wondering if there is an PSU out there strong enough for it?

the most capable i found was this one

http://www.newegg.com/Product/Product.aspx?Item=N82E16817494006