Hi Ryan,
It's a wintel world unfortuanatly.
When using obscure hardware like most people on the BBS.
Compatabity is the real issue. Intel chipsets are the drawing board for development. AMD and the companys hired to develop their chipsets are not too concerned about DAW. (not that intel is either, but it's a wintel world, again,)
It sucks, but that's the way it is.
The Athlon may very well work for you, and it is a superior processor. But choose every other component you build your sytem around.. very carefully.