mapleFU commented on issue #38560:
URL: https://github.com/apache/arrow/issues/38560#issuecomment-1791029916

   > This sounds like an urban legend at this point.
   
   Before Icelake optimization [1] [2], AVX512 might cause de-freq when using 
it [3]
   
   [1] 
https://www.hc32.hotchips.org/assets/program/conference/day1/HotChips2020_Server_Processors_Intel_Irma_ICX-CPU-final3.pdf
   [2] https://travisdowns.github.io/blog/2020/08/19/icl-avx512-freq.html
   [3] 
https://lemire.me/blog/2018/08/15/the-dangers-of-avx-512-throttling-a-3-impact/


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