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I want to use an 8 kernel Mathematica 12.2 version. Does a core i7 CPU with 4 cores and 4 threads fully utilize the benefit of the 8 kernels or an 8-core CPU is needed?

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    $\begingroup$ This will depend strongly on the workload. Generally, one physical core is recommended per thread for optimal performance gains (any more threads will give diminishing returns in many circumstances). However, a single Mathematica kernel might be able to use multiple cores thanks to automatic threading. $\endgroup$
    – Lukas Lang
    Feb 5, 2021 at 11:41

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