Ya I know, but on the SLI boards I've seen online they have a onboard thing between the two slots, where you have select if your running one card or two, the Asus one does for sure the Gigabyte card looks to have the same type of thing
http://images.anandtech.com/reviews/...i/giga-sli.jpg pretty much looks like a jumper to me.

http://images.anandtech.com/reviews/...LI/slicard.jpg this is the asus one and this is the whole thing http://www.anandtech.com/video/showdoc.aspx?i=2284&p=1

maybe it does it on the card itself with out the need of the extra thing with Intell stuff, dont know guess we shall see soon enough.