This is really exciting. The results at stock are solid, and with it being an unlocked chip its going to be an easy overclock.
AMD has even posted a guide to overclocking using these unlocked chips. AMD really embraces this concept as you can see a number of black edition chips as various price points.
AMD is making the more tweaker friendly options of the major players and the 955 is another fine example.
http://blogs.amd.com/play/2009/04/22...ion-processor/