Originally Posted by BUCK NASTY
Fastest Opteron 4P rig I know of is Grandpa @ [H] with Opty 6190's @ 3.0Ghz with a TPF of 10:33 and 507K ppd on p8101. Those are ES chips and I think he knows someone @ AMD. He also has 4 separate 4P rigs and a good retirement plan to fund these rigs.
My foggly little brain is telling me that, IIRC, the ES chips have unlocked multipliers. That may be how he gets to 3GHz.