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Ivy Bridge enable XCPM success but only 6 speedsteps


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My CPU is Intel i7-3770 (3.4 ghz) and it can turbo to 3.9 ghz. And my OS version is Sierra 10.12.6 install by clover and #####.

At first, my CPU block at 3.4 ghz due to XCPM of ivy bridge is disable in Sierra.



Then I open XCPM in Clover Configurator - Kernal and Kext Patches - KernelIvyXCPM

I use the and boot clover with argument -xcpm and i7 3770 can turbo to 3.9 ghz successfully.


However, there are only 6 channel at all, 1.6, 3.4,    3.6,3.7,3.8,3.9.

I'm wondering is this correct or there should be any method open the channel between 1.6 and 3.4




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