I personally do not have an AMD CPU but since they are literally becoming quite hot these days, I thought whether the following fix (as proposed here: https://www.reddit.com/r/matlab/comments/dxn38s/howto_force_matlab_to_use_a_fast_codepath_on_amd/) would bypass the Intel CPU check. Perhaps this could allow the AVX2 instruction set to be used for AMD CPUs. So, anyone with an AMD CPU can check whether the fix works !
Create and save a batch (.bat) file as shown below (this is for windows only, check the link above for Linux). Make sure Mathematica folder is in your environment variables.
@echo off set MKL_DEBUG_CPU_TYPE = 5 Mathematica.exe
Run the batch file to launch Mathematica and execute some code that relies on MKL (a lot of Mathematica functions for numerics rely on it). Compare the execution speed of the code now by launching Mathematica normally (i.e. without batch file).
Do you note any differences?