@scotchtape dude you are a hero! Thanks so much for the video and this extra explanation. One last question if you don't mind. In one off your comments you said that running the fan at 900 rpm would probably be a nice sweet spot between increased temp and noise. I'm considering buying this fan: https://noctua.at/en/nf-p12-redux-900
Would that give enough cooling power you think?
Rotational speed (+/- 10%) 900 RPM
Airflow 63,4 m³/h
Acoustical noise 12,6 dB(A)
Static pressure 1,21 mm H₂O
Thanks again!