No Socket 939 Opteron HE or EE exist, and the OPN is from a common Socket 939 Socket 148. You can also check with
Central Brain Identifier.
There are reports that some people damaged they Cache L2 by overclocking with Athlons XP, but nothing like that with K8s (However, sometimes the Processor worked flawlessly in another Motherboard). You should contact AMD, or either try the Processor in other Motherboard and see if it does the same.