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AVX core and turbo frequencies

idata
Employee
‎10-17-2015 05:21 PM
2,444 Views

Intel E5 v3 processors shift the cpu frequency from the normal frequency range to a lower, "AVX" frequency range when executing AVX instructions. Documentation for this can be found here: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-v3-spec-update.pdf http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-v3-spec-update.pdf

Do other Intel processors also have an AVX base frequency that is lower than the normal processor base frequency? Specifically, do any of the i7 processors?

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idata
Employee
‎10-18-2015 08:43 AM
1,236 Views

Here is an overview of the AVX frequencies that is a bit easier to understand: http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-xeon-e5-v3-advanced-vector-extensions-paper.pdf http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-xeon-e5-v3-advanced-vector-extensio…

Also an Anandtech article on the Xeon E5 that explain AVX base and turbo frequencies: http://www.anandtech.com/show/8423/intel-xeon-e5-version-3-up-to-18-haswell-ep-cores-/5 Power Optimizations - Intel Xeon E5 Version 3: Up to 18 Haswell EP Cores

So there is extensive information about this feature for Xeon E5 processors v3, but I have not seen mention of it for any other processors that support AVX instructions.

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