Quote Originally Posted by chuckbam View Post
Both C1E and SpeedStep work with my Overclock, either separate or together. I am still using the 20x multiplier at 180 BCLK.

I looked all over the Intel website on C-States. I only found a small amount of information related to Mobile Processors.

On the i7, they only list SpeedStep and C1E as supported features. This makes me think the C-States are not supported. And, is why it is disabled in the bios by default.
Cstates are basically the level of sleep state that can be applied, the higher the Cstate the more of the core can be shut down during low to idle useage. In order to get the 22 multiplier with turbo boost you have to enable a cstate high enough to allow the cpu to sleep three cores.

Look up the turboboost white paper on intels site.