16 Core Opteron 6274 Benchmarked
I built this server a long while back and never got around to benchmarking it. Its a file and VM server running Ubuntu 12.04 LTS with KVM. All VMs run on an array of SSDs while file service is on a set of cheap hard drives.
Anywho, at 2.2GHz its not a screamer. I never expected it to be. Linked below are a number of tests against various Intel and AMD processors, including my lightly overclocked home work station. Since this chip runs at about 1/2 the frequency of some of the others, NAS parallel benchmarks are englightning.