http://www.gamefaqs.com/boards/916373-pc/62976309/703809558 Guess you can ignore the part about getting a 650W PSU -- although your motherboard is hardly suitable for tri-SLI. And tri-SLI scaling is a joke right now. It is absolutely not worth the money, the heat, the power. It's arguably useful if your monitor is 2560x1440 or better, but I'm guessing it isn't, and even then, it's still not quite worth it.
-What is best in life? -To crush your enemies, see them driven before you, and to hear the lamentation of the women.