Quick and Dirty AMD K10 Cinebench
 

Cinebench completed the default benchmark in 27 seconds for the 1.6 GHz K10; 17 seconds for the Intel Xeon X3220. The Kentsfield Xeon was 58% faster with a 50% higher clock frequency for Cinebench.

http://www.dailytech.com/article.aspx?newsid=7574