Is the gigabyte GA-MA785GMT-UD2H a good midrange/semi high end gaming board?
More aboutthis good gaming board
Motherboard has a little effect on gaming,what is your CPU/VGA and RAM ?
If you are thinking about using the onboard gpu for games, I would say you that it's not a good idea at all. The mobo is a good one, but if you want to run games you need a PCIe graphic card. The ATI 5770 has a very good price/performance ratio.