BBK if its for professional use, you would be better off calling OCUK and talking to one of there specialist builders, as that spec above is just total overkill, and can be made a lot better, minus the watercooling, that is'nt needed. AMD/Nvida professional level cards would probably be better to be used, then 2 standard 480's, and saying that you would'nt need 2 anyways.