With the 'powersave' governor and all 5 fans "Silent", the CPU temperature, for random/normal computer use, is in (33.25 51.125) and ditto GPU (40 42), and with the 'performance' governor it is ... exactly the same.
https://dataswamp.org/~incal/conf/.zsh/misc-hw -- underground experts united https://dataswamp.org/~incal