All 8+ core E-class server chips down clock with AVX in the stack

[ssote]

All 8+ core E-class server chips down clock with AVX in the stack. Is this statement true?

[David_A_Intel]

Hello wingman99,

This questions will be better answered by our processor support.

Regards,

David A.

[idata]

wingman99: Thank you very much for joining the Intel® Processors communities.

In order to provide the most accurate response to your inquiry, I will start a research on this subject and as soon as I get the information I will post all the details on this thread. Any further questions, please let me know. RegardsAlberto R

[idata]

wingman99: I just got an update on this matter, and we wanted to confirm where did you got that information from? If by any chance you have a link where we can check that information it will be very useful.

Any questions, please let me know. RegardsAlberto R

[ssote]

Intel Corporation wrote:

wingman99: I just got an update on this matter, and we wanted to confirm where did you got that information from? If by any chance you have a link where we can check that information it will be very useful.

Any questions, please let me know.RegardsAlberto R

This is where I got the statment Link: http://www.overclock.net/t/1621347/kaby-lake-overclocking-guide-with-statistics/3060# post_26143691 Kaby Lake Overclocking Guide [With Statistics] - Page 307

[idata]

wingman99: Thank you very much for providing the link. We will continue with our research on this subject. As soon as I get any updates I will post all the details on this thread.

Any questions, please let me know. Regards,Alberto R

[idata]

wingman99: I just wanted to let you know that I just got an update on the research we are doing on this matter, based on that information the frequency reduction may lead by using AVX instructions but it affects insignificantly. For example, till 8 core there are no any differences. If there are more 10+ cores, the frequency may decrease on 0.1 - 0.2 GHz so it is not significant.

On the following link you will find a short description of AVX for v4 CPUs:https://software.intel.com/en-us/articles/intel-xeon-processor-e5-2600-v4-product-family-technical-overview https://software.intel.com/en-us/articles/intel-xeon-processor-e5-2600-v4-product-family-technical-overview Also, on the link below you will find additional information about AVX on v3 processors:https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-xeon-e5-v3-advanced-vector-extensions-paper.pdf https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-xeon-e5-v3-advanced-vector-extensions-paper.pdf We cannot guarantee 100% preservation of frequency with AVX. We do not exclude that the frequency might be a bit less (not significant) if there are more 10+ cores. Any questions, please let me know. Regards,Alberto R