CUDA performance ubuntu 16.04 vs windows 7?

Hi all,

I have the latest drivers installed for my unbuntu machine and trying a couple benchmarks. I have a titan x GPU and dual Xenon drivers. The benchmark test was the blenchmark blender test. The latest nvidia drivers were installed by RUN file as well as cuda 8.0

My results are GPU CUDA render is 59.19 seconds and CPU render is 38.42 seconds. I don’t understand why the CPU’s are faster here. Is there settings via nvidia-smi I am missing? I can’t seem to set a frequency or change the driver model to TCC (as it’s only a windows driver).

Some sanity would be great,

Thank you in advance,