Hi I am building a computer right now and I was thinking about using crossfire, but I don't know if it's worth it? It seems like it would cause a significant output increase, but i could be wrong? But it also seems like if you had 2, 3, or 4 way SLI or crossfire going it would require a huge power supply depending on what graphics card you got. So what I'm trying to figure out is about how much wattage crossfire is going to use and if its even worth it. I don't need to have the very best so something that would play games just on medium settings at a decent frame rate would do just fine, and I don't know if it would be cheaper to just go the single better graphics card way or go with two or three lower end graphics card and buy the larger power supply. So anything that you can tell me I would appreciate.