GeeekPi Raspberry Pi Cooling Fan, Raspberry Pi ICE Tower Cooler, RGB Cooling Fan with Raspberry Pi Heatsink for Raspberry Pi 4 Model B & Raspberry Pi 3B+ & Raspberry Pi 3 Model B

With this beast of a cooler, I was able to manage a super stable CPU overclock at 2.3GHz and GPU overclock at 750MHz on my Raspberry Pi 4 (8 GB model). Temps idles around 30-33° C and never get above 50° even after full load on all cores (using stress-ng) for more than 15 minutes, at which point temps seem to stabilize there.

I really like it. Looks great and works well. Probably not the best price on the planet.

I purchased this over the Seeed one because it has a bottom plate. That seemed like a good idea to prevent shorts. Installation was easy. Everything fit correctly on a Raspberry Pi 4. The fan is quiet. The heatsink has uneven crimping; this makes it slightly lopsided (3-4mm). This is purely a cosmetic issue. Obviously, they dont QC these units.

Dropped my temps from 71C @ 1.5ghz to 40C @ 2ghz. Probably has more to give, but Im happily running a vanilla minecraft server for my house/friends 24/7 inside a 3d printed case from thingiverse: thing:4249203.

Works great nice on the eyes too

Temperatures are definitely low, but through empirical testing, a quite small copper heatsink with a fan aimed at it produced lower temperatures in the same ambient environment. I suspect the heat-pipe in this probably isnt of great quality so even though the fan and the fins are excellent, there isnt great heat transfer to them.

I have 2 of these now the second one I just got Feb 2021 came with a second non led fan that did not come with the first one, its nice to have a spare! I have not overclocked yet but these keep the temp below 38c.`1

Highly recommend this cooler for your raspberry PI 4 I have not seen my Pi go higher in temp than 31 degrees on full load

Got it for my Pi 4 B, fits great and very functional. Stress testing for 10 min at 2.1Ghz and it didnt go over 40 degrees C. That is very impressive.

This thing really works. My cpu temp barely ever budges even under heavy loads. I also like the LEDs. I suppose its kinda silly for a simple little RPi but it makes me smile and it does what it says it does.