It may change, with HP rolling out many new Opteron products on Monday, including 2 blade servers, an SLI dual Opteron workstation, and the high-volume HP DL 385.
Also, the new Rev E Opterons will see an impressive boost over Rev CG, mostly in 2, 4, and 8P servers, with HT freq going up 25%. Also, they may manage a ~5% IPC boost over Rev CG, thanks to other enhancements. And of course, they just bumped up another 200MHz to 2.6GHz.