more details on the dual Xeon 6-core, total 24 threads on the system:
- Normal rendering is working ok, 100% cpu usage.
- pvengine.exe -> uses 50% of total cpu power.
- pvengine-sse2.exe -> uses 50% of total cpu power.
- pvengine64.exe -> uses 100% of cpu, this seems the only exe that works ok
with the benchmark.