Greetings, I'm thinking of jumping on the 580 bandwagon. Currently I'm running 2 BFG 260s Slied. I've heard that 1 580 (am I saying that right?) is better then both cards together. I thought about getting 1 @ 1st & then a 2nd maybe a month down the line. Then using a 260 as a physics card. My question is would I see any real difference in performance? I typical game @ 1920x1080 & my current set up is a i7 950Bloom Feild Oced up to 4.0 - 6 gigs of memory & a Asus Sabertooth x58 board. Thanks for looking & thoughts?