Sorry to bump old thread, but I was curious about the same thing as OP and found this:
https://hattedsquirrel.net/2020/12/power-consumption-of-ryzen-5000-series-cpus/
https://hattedsquirrel.net/2020/12/power-consumption-of-ryzen-5000-series-cpus-part-2/
The guy explains it in great detail.
He...