Download MacCPUID

MacCPUID is a developer tool used for displaying information collected from the microprocessor via the CPUID instruction. The CPUID instruction returns information in the general purpose registers such as manufacturer identification, a processor's family, model, and stepping numbers, supported features (e.g. SSE, SSE2), cache information, and many others.

Download MacCPUID V2.2:

Downloadapplication/x-apple-diskimage maccpuid-2.2.dmg2.5 MB
For more complete information about compiler optimizations, see our Optimization Notice.


Interesting, I have a macbook pro with an identical processor as my acer aspire (core i5 430m 2.26GHz) CPUID/CPU-Z on Windows 7 shows 2 cores 2 threads per core with 4 logical CPUs on my macbook, using this tool, I see 8 cores 2 threads per core at 16 logical CPUs... How can this be?

Very detailed information about the system processor and even better explanations on all the data.

Please try download the 10MB .DMG linked to on this page. It should have the updates you're looking for.