Business Winstone tells an interesting story about the Phenom 9600 Black Edition - the microcode based TLB erratum "fix" comes with a 2.1 point - almost 7% - performance hit when running at the stock 11.5x200 MHz setting.
The AMD AOD utility also causes a 0.2 point performance hit, and the Asus M3A32-MVP board is 1.1 points faster than the MSI K9A2.
Content Creation
For Content Creation, the TLB fix causes a 2 point performance drop (about 5%); and having the AOD utility on the system causes a 0.8 point drop in performance. The Asus board is 2 points faster on this test.