In answer to the questions about the SATA controller on the fun little AMD platform, I ran some tests.
Here are my results:
SATA_WDC74G_10k by xylker
This is the SSD I am using as the OS drive.
SATA_OCZ90G_SSD by xylker
[Edit:] See comments thread from the E-350 article http://techreport.com/articles.x/20401 for the request for this.