Now we can see dynamic frequency and power changes. Don`t forget to repair permission (in Disk Utility) when done, then reboot your Mac. Just download IntelEnhancedSpeedStep.kext.1.4.5.zip, then copy IntelEnhancedSpeedStep.kext into /System/Library/Extensions. Here's how to enable SpeedStep on any Mac: Use the xnu speedstep kernel extension. This allows the processor to meet the instantaneous performance needs of the operation being performed, while minimizing power draw and heat dissipation."Īpple implements SpeedStep on certain Macs, but not all of them (and if you've built your own Mac, you may not have any SpeedStep support). As described on Wikipedia, SpeedStep "is a trademark for a series of dynamic frequency scaling technologies (including SpeedStep, SpeedStep II, and SpeedStep III) built into some Intel microprocessors that allow the clock speed of the processor to be dynamically changed by software.
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