disable CPU boost
Mostly a re-post of my earlier comment under the former article:
For CPU jobs, disallow the CPU frequency boost partially or (better) completely.
That top end of the clock range is very energy-inefficient compared to the base clock. For my machine (i7-8700K, 6 cores), base freq. 3.7 GHz, boost 4.7 GHz, the difference at full load is "almost silent" versus a rather obnoxious "WOOOOSH!".
I suspect one can do similar for the GPU, could somebody enlighten us?