A PCI Express 2.0 card will run just fine in an x16 slot, it will just run at reduced speed a bit like a PCI Express 3.0 card running in a PCI Express 2.0 slot will run at reduced speed. Both the 8800 and 9600 would run fine on that board, I ran a 9600 GSO on a PCI Express x16 slot just fine.MyCattMaxx said:It is PCI-E x16. I doubt a PCI-E 2.0 card will run on it, but I may be wrong as I don't pay attention to vid cards.