the Pi was getting quite hot very often despite the built-in fan and included thermal pads. Also, the fan is a little bit noisy above 50% of its maximum speed. I eventually moved my node from the Pi to a normal server.
note that the Pi CPU can be underclocked in /boot/config.txt.... somewhere, somehow
Anyway, I don't want anything else other than my RockPro64 board (raw Debian in it), and I install solely what I want, the way I want and when I want. Full control... Period!
you can get even more control using open source BIOS, which became available for the RockPro64 recently (check coreboot.org)