I have built 3 PCs w/Biostar NVida Chipset Mobo (6100 I think) with AMD Processors and they have worked flawlessly. I think its the Chipset more that the mobo maker when it comes to Biostar.
Also, ASRock at one time made the best AMD 939 Mobo (ULI Chipset) as long as you ran linux or XP. Vista did not like it - especially 64 bit. But XP 64 ran great on it! :-?
