How can I tell when Turbo Boost is active on my MacBook?

Solution 1:

there's 2 utilities that could provide that info,

• one from Intel called MacCPUID (http://software.intel.com/en-us/articles/download-maccpuid/)

• other called CPU-X (http://netkas.org/?p=72) rather outdated

Hope this helps.

Karl

Solution 2:

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

Solution 3:

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)