I am totally surprised no one saw this, you can see in MuffinFlavored post he only uses two SLI connectors. If anyone saw the "ghetto" version of a tri SLI connector its basically three SLI connectors. In Tri SLI each card has to be connected to the other two cards. This guy would have use 6 connectors so every card would be connected.
So there is absolutely no way this is really quad SLI.
But to me it looks like he has duel SLI or like two SLIed cards for one display and the other two cards for the other display.