I've read what you have and when I look at the length of that ATI card I can see how at least one SATA port could be blocked. When you consider the thickness of the ATI card, perhaps two more. I couldn't find the dimensions of the ATI card anywhere. I'm comparing the Gigabyte GA-MA785GM-US2H and full ATX sized GA-MA785G-UD3H. One advantage to the full ATX is the PCI Express 16 x4 slot rather than the PCI Express x16 slot is in the way of the SATA ports. So if you only put a single ATI crossfire card in, you won't block anything. Of course, it seems you can't ever add a 2nd ATI card to the micro-ATX board. Hope this helps a bit.