Probably a bit better but not a lot as they are Cas 5 so just 25% more bandwidth with the same latency really. Still nice to see some significant improvement in some cases pretty much like s939-s754 like I figured, it seems worth 512KB of cache in some cases seeing the similar performance of the FX60 and 5000+. AMD timed the transition just right and it should help Opteron even more in workstation/server apps.