Yes, that is indeed normal.Anything over 50% means that HyperThreading is actually gaining you something.
This is normal for all SMT processors: http://en.wikipedia.org/wiki/Simultaneous_multithreading
- Including AMD's FX-#### series, which are actually SMT, they're not full cores as they share an FPU (and/or other internal Resource Contention between 'pseudo-cores').'tis a shame that some people on another forum, that shall remain unnamed, encourage people that there is a bottleneck because of this foolishness...
EDIT: Try disabling HyperThreading and run the benchmarks again, each 'real' cores ability to reorder instructions for Out-of-Order execution will sky rocket; much like the Core i5 - only with the Xeon's cache!
- Each core will be busier, and performance may actually be higher due to this (^) and reduced resource contention between cores.
There is a fairly well known article on the net somewhere that covers this, from back in the Athlon K7 days when the DEC Alpha processors (including one that was never made if I recall correctly) explains it in 'somewhat' plain English.