Shouldn't this be posted in a new thread?
Oh, and all I know is that Via apparently has a chipset called KM400 for AMD systems. It features an integrated S3 gfx chip, but I just didn't find a nice review where you could see it in comparison with the other onboard solutions. Besides, most mainboards with this chipset are micro-ATX, if that matters for you. Most, but not all.
If you would also buy an Intel system, Via has the same gfx chip in some northbridges for Intel systems, too, but on the Intel market there is more competition. I would be surprised if SiS didn't have some kind of onboard gfx as well, not to mention Intel themselves.
Maybe I'll find some reviews, but it's almost midnight now and I gotta work tomorrow...