@ chew* DO NOT USE AOD 2.1.5 with this board.
2.1.4 works flawlessly, despite the GPU clock speed/temp reading not showing.

About HD audio bus issue: I had it (the device in device manager) disabled in XP. I don't remember if I installed the driver update for it. I use SB audigy SE with X-Fi mod drivers.

UD4H Bios: Interesting. It should not be an issue to try the UD4H Bios... since if it will not work, dual bios will (or should??) take care of that...

Have anyone of you checked the older F3 and this new Gigabyte F3 checksums? I will do this when I have the time.

Time to update the first post...