As usual the synthetic benchmarks are not very reliable. During testing we found something interesting. When enabling or disabling the C-States you will get different results. We have contacted the guys from Everest to find out why this is, but it seems the energy savings have something to do with it. Here are the results with the P55-GD65:

C-States enabled, C3


C-States disabled



Because such benches are not reliable we have to do it the old fashioned way and test it with some applications.