I disable hyperthreading for better performance.

In my experience as a mathematician building parallel compute servers, hyperthreading generates more heat than it is worth. I can overclock further without hyperthreading, to more than overtake the faint advantage that hyperthreading offers at a given clock speed. So I now buy binned, delidded processors from Silicon Lottery, choosing the best reasonably priced speed of the best cpu without hyperthreading. That would today be the i7-9700 @ 5.1GHz for $400.