“Surprisingly quiet fan. The fan and heatsink keep my Pi5 cooler than my Pi4. Haven't tested under any great stress yet but confident it will do the job.”
“I bought the cooler to use on my new Raspberrypi 5 that will be a stand alone unit for communications
for Humberside Raynet (HR ) they supply radio cover for emergencies and with it been a small unit makes it very portable.”
