Newer heard of turbo boost? That main principle is to boost cpu clock when usage is less than 100% to redistribute more power to less threads.
Clock boost is such that CPU utilisation is 20% of the max throughput that occur if the CPU part use 25W.
Newer heard of turbo boost? That main principle is to boost cpu clock when usage is less than 100% to redistribute more power to less threads.
20% CPU usage is 20%, whatever turbo boost is applied.
100% is 8 cores running at 2.5W each, at a frequency F.
20% is 1.6 cores running at said frequency F and using about 5W.
Beside turbo is a very bad thing, one core/1T at 3GHz use 5W.
2 cores/2T/5W run at 2.3GHz; that s 53% more throughput than 1C/1T/5W.
3C/3T/5W run at 2GHz, and that s 2x the throughput of 1C/1T/5W.
In power limited scenario it is of great advantage for autonomy and perfs to distribute the load on as much cores as possible.