Are you talking about the MA785GMT-UD2H
or the MA785GM-UD3H
? Either way, I wouldn't get either of those boards. The first one is an older board without many great features. A better single PCIe 2.0 slot board would be the Gigabyte GA-770TA-UD3
, as it has USB 3/SATA III support and is cheaper. The second one is an AM3/AM2+ board, which means it only uses DDR2 RAM. It'd be obsolete before you even order it.
As far as other motherboard manufacturer's go, Asus is also a high quality brand. Typically, I stay with Asus or Gigabyte. However, MSI and EVGA make decent boards, but just aren't as high quality. They are cheaper though.
You can Crossfire the onboard graphics. However, it won't be as power as a single GPU in most cases. Crossfire would typically be reserved for using two of the same card to maximize your performance.