In the bios of GA-EP45-EXTREME there are options to turn on advanced energy saving features as C2E/C4E. However when turned these features on and overclocked the E8400 to 3600 MHz, after restart the OC was gone. Without turning C2E/C4E, overclocking was working. Some people said that OC should work with C2E/C4E enabled. It works only with C1E and EIST enabled.
How should it be?
How should it be?