# :chart_with_downwards_trend: Raspberry Pi 4 with active cooling
Did an experiment with adding a heatsink to the processor and housing with small fan running at 3.3V to see the effect.
[Miuzei Gehäuse für Raspberry Pi 4 mit Lüfter Kühlung](https://www.amazon.de/gp/product/B07TYW63M8)
Using this housing reduces the CPU temperature in mostly idle state for about -13°C