Review on ⚙️ LANDZO Raspberry Pi 3 B+ Dual Fan with Heatsink for Optimal Cooling (compatible with 3B+) by Tyler Markham

I would give this little heatsink 5 stars but the included thermal tape doesn't transfer heat very well. I understand that this product is intended to be used on the Pi 3b+, but it should still cool the 4 effectively when connected directly to the CPU with thermal tape. The method I used to get the best performance from this kit on the Pi 4 was to attach a small copper heatsink to the RAM chip that sits on top of the Pi. Then I cut two squares of thermal tape and taped them over the copper heatsink and Wi-Fi module and applied some MX-4 thermal grease to the processor (see image). Then just put the heatsink on top, make sure it's glued well and connect the fans. I ran some tests with cpuburn-a53 in Raspbian and here are the results after 5 minutes. The Pi was not in a case, the ambient temperature in the room was 22C, the fans were connected to the 5V header and the processor was overclocked to 2GHz with thermal tape with over_voltage set to 4: Idle: 44- 46°C, normal use/web browsing: 55-60°C Under maximum load: 81°C and regulation Using above method: Idle: 32-34°C General use/web browsing: 35-36° CUnder maximum load: max . 53°C Using above method and 3.3V jack: Standby: 37-39°C General use/web browsing: 42-44°C Under load: 61°C max. As you can see, thermal paste makes a difference big difference in performance. The fans are not loud, but are quite audible when operating from 5V, when connected to 3.3V they are almost inaudible, if at all. I would definitely recommend this heatsink if you have a Pi 4, the thermal paste is just lying around. and don't mind making a small change.