ok not sure if here is the best place for this but here goes. just today ive been having a problem where my i7 950 underclocks itself to 1.6 while in game cause my fps to drop to 20 fps my temps are not high so thats not the problem ive seem to be able to stop it from happening if i disable hyperthreading speedstep and C1E state sorry for a lot of text.
i7 950 3.2 ghz
6 gb ram
asus sabertooth X58
in short cpu underclocks to 1.6ghz during game turned off hyperthreading speedstep and C1E