8800GTX is working just fine with the SATA ports here 5aboy. I don't use all of them as I had originally planned to, but I could certainly squeeze them on if I need them later. As I understand things, all the boards regardless of brand are reference designs layout-wise, so the same should go for everyone. You will need a single angled SATA cable to fill all 6 slots, the rest can be the regular straight ones.