Review on 🔥 Raspberry Pi 4 Aluminum Heatsink with PWM Controllable Fan by GeeekPi - Raspberry Pi 4 Armor Lite Heatsink with PWM Speed Control Fan for Raspberry Pi 4 Model B by Jason Hutchinson

Works well and easy to install. My Raspberry Pi 4 4GB is in a closed TV case so it tends to get hot in there. However, this heatsink fan from Armor lowered the Pi temperature from 70-80°C to 50-60°C while remaining in the cabinet. Works correctly with the Raspberry Pi OS's built-in fan control settings, allowing the fan to turn on automatically when the Pi reaches a predetermined temperature. The only downside is that the heatsink is too long and you can't close the top cover. I could adjust the case if I cut the lid a bit in a few specific places. Overall, I'm happy with the price, ease of installation, and temperature reduction. The fan is also very quiet. Just for comparison, before ordering this cooling fan, I tried the Argon One M.2. The Argon is a good case with excellent heat dissipation, but the Argon had an under voltage issue when not using the official Argon charger. So I sent the Argon One back and decided to order this fan. This cooling fan works well with no under-voltage problems.