[bsoft16385]

Zen2/Zen3-based, non-APU Ryzen still has pretty awful idle power consumption compared to Intel desktop CPUs.

My 5900X at idle draws around 22W. Modern Intel desktop CPUs (which are basically all Skylake refreshes right now) are 8-10W at idle.

[kllrnohj]

Sure, but 22W is still a trivial amount of heat & power in the form factor of a desktop system. Fans don't need to spin for that (or if they do it's at the lowest RPM - still silent). Fans do need to spin, and with some moderate oomph, to handle 80W, though.