HS benchmarked the forthcoming SiS 771, a socket AM2 chipset with integrated graphics. Take a look to have a clue on the performance of motherboards based on this new chipset.
Here is a snippet:
"SiS 771 is a chipset with integrated graphics targeted to the AMD platform to be released by the end of this year. We've got from SiS a reference board for this chipset and since motherboards based on the same chipset usually achieve similar performance, you can have a clue on what performance to expect from motherboards based on the forthcoming SiS 771."