Pi 4 Extreme Cooling Fan Kit, Aluminum Heatsink with Cooling Fan for Raspberry Pi 4B & 3B

Used this on my Pi that I use as a PiHole - it's lived in a closed cupboard for years and was always idling around 56C and above - not terrible but not great - and crashed once or twice from overheating.Long story short, put this on the Pi with the high fan setting ( Noise level not too bad, but I wouldn't want it in an open space or desk ) and it's dropped to a consistent 34C, very nice.Installation is easy, slap the thermal pad on, squish the cooler over that, and follow the product page images for where to put the wires and you're golden.It fits on my Pi no problem, though it does sit at a bit of an angle due to inconsistent heights of components.

Easy to install and does the job fine. It’s pretty quiet and gives a little confidence that it won’t overheat when doing something a bit more taxing.

Good heat dissipation but noisy when connected to 5V as per instructions. Connecting it to 3V instead it is a lot quieter and pi is only a few degrees hotter with the fan powered at 3V rather than at 5V.

Comes with thermal pads for both PI 3B and PI 4B. Cools the CPU, RAM, and both ethernet and USB controller chips. If I were to use some of the thermal pads in hte package, I could also have it cool the WiFi chip.The Pi 4B should NOT be used without cooling. Out of the box, mine ran 60+ C out of the box, in the high 70s when running something as simple as htop, and thermal throttlet to the point it became unresponsive over SSH, and downloading apt upgrades took ages.I got cheap aluminium heatsinks without a fan, but the CPU temp still kept going over 70C and throttling.With this heatsink, running 4 separate docker containers, temps in mid 40s if using the 3.3V header, or high 30s if using 5V.The heatsing fits inside the basic PiHut enclosure, but since it doesnt have ventilation holes its not the best, still keeps temps in mid 50s. (and you dont need to take heatsink off if you wanna toss the pi in a bag in the enclosure).Tiny bonus, it comes in a small Amazon envelope that fits through your pigeonhole/letterbox, so you dont have to be home for delivery.

I purchased this for my Raspberry Pi 3B+ due to an overheating issue. The item works as expected and keeps the Pi about 10ºc cooler during use. The fan is very quiet and not noticeable in general use.The instructions aren't great, but with a bit of common sense it's straightforward enough. The one issue you may notice with the pi 3 is that a small copper square is included, but there are no instructions for where to add it. I eventually found it should go on the underside where the ram chip is (see pic).The fact it includes both a thick and thin thermal sticker may also confuse some. I just went with the thicker one assuming it would hold and dissipate more heat across a greater area, and more quickly.Other than instruction issues, the product is good and working as intended.

Does the job well but as with all small fans there a little noisy so if this is going to be installed in an area where you going to be spending a lot of your time and your needing this to be turned on all the time is go with a passive fanless setup but saying that this does a good job keeping the pi cool I've not seen it go above 50 degrees once so this is a great option if you don't mind the noise factor

I had a pretty robust heatsink solution on my pi 4 running Batocera for playing retro games. I wasn't happy with temps which were around the 60 degrees mark. Fine but a little hot. As the system is running pretty hard playing games and I'm running a overclock at 1800 I needed a beefier heatsink. Swapped the old set out for this and instantly seeing a 20 degrees drop in temps under the same workload. The pi never goes above 45 degrees which is outstanding. Installation was a breeze and the noise from the fan is very low in high speed mode. The heatsink also covers all the components that need cooling like the CPU/GPU/Ram. Overall I highly recommend this as a great cooling solution for a overclocked pi 4. For piece of mind always get the biggest beefiest heatsink you can! Especially if your running your pie in a gaming set up.

This works perfectly for what I needed.I'm using my pi4 as an always on, plex media server. Before I bought the fan the pi was running too hot which was affecting performance. But now everything is cool and working well.Easy to install, everythging was clear.