So I upgraded my motherboard in anticipaton of getting another GTX Titan. Thing is, my version of Windows 7 Pro is the system builder verison. So, I installed the board and everything else, fired it up and it boots right into my desktop. Aside from reinstalling some drivers everything is the same as it were before the new motherboard. I was under the impression the System Builder version couldn't be brought to another board? . . . Not that I'm complaining.