Running a single Sapphire HD5770 Vapor-X in mine, and it is excellent. 
Only 'problem' i've got atm is that even though i'm running a dedicated GPU the board is still allocating 128MB to the IGP...
So my System Memory says:
4.0GB Installed (3.87GB Available)
Which is a little annoying. I've asked Gigabyte about it and am now awaiting their response.

Only 'problem' i've got atm is that even though i'm running a dedicated GPU the board is still allocating 128MB to the IGP...
So my System Memory says:
4.0GB Installed (3.87GB Available)
Which is a little annoying. I've asked Gigabyte about it and am now awaiting their response.