I was worried about the 2 X 570 config since it has more heat, is a little more cumbersome, and because of the micro-stuttering SLI can bring. http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html
I guess your right, since I have it I will just give it a try to see if it makes a difference. I just thought maybe someone would already have experience with a setup like that and could give me a quick yes or no. Once I have my 580, prolly a couple weeks away, Ill post back with results. The card is worth maybe $50 at best on EBay, so if I hold onto it I'm not out too much.
Whats a good program for monitoring FPS in game with things like min/max and avg?