I have the exact same motherboard, and HD in 1.0.1 is working for me under Vista through HDMI.My video chip/card is an nVidia GeForce 7100 integrated on the motherboard (Gigabyte GA-73PVM-S2H GeForce 7100 Socket 775 onboard VGA 8 channel audio mATX Motherboard) and I have allocated 256MB memory.
I think this is well within the spec. - and as I said has been working OK with MP and still works OK with DVBViewer.
United States of America