intel i7-10870H single core unable to boost above 4.1GHz
@Phani Pavan I noticed a problem with your Windows power plan settings. IDLE PROMOTE and IDLE DEMOTE are both set to 100. When my computer is set to these values, the C states become disabled just like you are seeing.
To fix this problem, open up a command window and enter the following four commands. Copy and paste each line into a command window one at a time.
powercfg /setacvalueindex SCHEME_BALANCED SUB_PROCESSOR IDLEPROMOTE 60 powercfg /setdcvalueindex SCHEME_BALANCED SUB_PROCESSOR IDLEPROMOTE 60 powercfg /setacvalueindex SCHEME_BALANCED SUB_PROCESSOR IDLEDEMOTE 40 powercfg /setdcvalueindex SCHEME_BALANCED SUB_PROCESSOR IDLEDEMOTE 40
After you enter these commands, you will need to switch to a different power plan and then switch back to the Balanced power plan. You can use ThrottleStop to switch Windows power plans or you can go into the Control Panel - Windows Power Options and switch profiles there. Those are the default values that Windows 10 seems to use.
If this does not solve your problem, enter those four commands again but use the value 100 on each line instead of 60 or 40.
If this gets your C states working again, Intel Turbo Boost and the higher multipliers should also start working again.
It looks like these were deliberately set to the incorrect values. Very sneaky.
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