Yes, you could, but server components are not going to give you any extra benefit for gaming. You don't need "server components" for an extreme or "ultra" gaming build. Any decent motherboard can handle two TitanX in SLI. Of course, you'd also want a top end Intel Core I5 processor, sufficient RAM, and the monitor(s) to give you the high resolution that have two Titans in SLI would be made for.
-Wolf sends