I have this card http://www.newegg.com/Product/Product.aspx?Item=N82E16814161310 and another one coming today. however.. I just noticed this card http://www.newegg.com/Product/Product.aspx?Item=N82E16814161317 I was wondering if there were any benefits from going with single slot designs as opposed to duals when running xfire. I know that it might save me the use of a PCI slot or 2 but honestly, I do not use any PCI cards whatsoever. I'm more concerned with heat. Any info would be appreciated!