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I have one of the core i7 MacBooks, and I'm wondering if there is a way to see when Turbo Boost is active (other than the fact that the laptop gets really hot and the fan kicks on).

I use iStat to monitor CPU activity, but that doesn't show Turbo Boost activity.

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I always think of KITT and Michael Knight when I read 'Turbo boost' - – CousinCocaine Aug 11 '14 at 21:01
up vote 4 down vote accepted

there's 2 utilities that could provide that info,

Hope this helps.


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The MacCPUID always shows that my CPU is clocked at 2.3 GHZ. But in fact it should change from time to time and go from 1.8GHZ-2.8GHz. Not really helpful. – gentmatt Dec 28 '12 at 12:38

Check out the Intel Power Widget - It provides info about the processor frequency in GHz and Processor Power in W.

intel download page >>

screen shot

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On my Mid 2010 iMac with a core i7 the installer balks, saying "Intel® Power Gadget only supports 2nd generation Intel® Core™ processors and later." – AllInOne Aug 5 '13 at 23:18
ver 3 downloaded from here worked find on my Macbook Pro Retina 2015 – Kevin Apr 6 '15 at 1:19

with a mac pro13" 2013 retina (2.4GHz, 2.9GHz turbo boost) this works and I can clearly see turbo boost kicking in with very tight numerical code and taking the cpu up to 2.88GHz. With this code I am getting ~ 10.22Gflops from a single core using SSE (peak would be 11.6Gflops at 2.9GHz)

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