I have the GA-MA78GM-S2H, and I am having trouble getting custom resolutions over DVI, VGA is fine but I can't get 1280x714P over DVI. (720P works though) Sadly this is the res I need for a 1:1 pixel res on my screen. It works with an ATI 9700 but so far not with this HD3200, maybe the DVI output is...