GeeekPi Aluminum Heatsink with PWM Controllable Fan for Raspberry Pi 4, Pi 4 Armor Lite Heatsink with PWM Speed Control Fan for Raspberry Pi 4 Model B

Important! Make sure your power supply can handle this. I don't know what the extra draw is but i had to use a better power supply because my USB ports stopped working when the fan was on.The product box came crushed with the flaps opened but thankfully everything was there and nothing damaged because the heatsink and hardware were inside resealable plastic bags inside the box. I know this isn't Amazon's fault because product boxes for cheap stuff from China almost always get crushed in transit to the US. As long as the product is not damaged i don't care, but something to keep in mind.On the back of the box it says it's manufactured by Shanghai Cool-Lite in China and there's just a sticker on the front with GeekPi, an ID number, and a barcode. So i'm guessing maybe you can buy this exact same kit under a different seller.Easy to install and came with an extra set of thermal pads. My RPi4 always idled at 50 C before, as reported by the temperature widget in the OS. With the fan off the heatsink doesn't change the idle temp at all, 50 C. With the fan on, it went down to 29 C. The fan is quiet but i don't want it to run constantly so i set the threshold to 55 C so that it only turns on when i'm actually using the RPi. Note that raspi-config only let's you set a minimum of 60 C so if you want to go lower you have to edit config.txt manually. If you just want the fan to always run you can also just leave the fan control disabled.While the top of the heatsink is not any higher than the USB and LAN ports, the wires are something to consider if you're using a case since they will be the highest point. Also note that the screws go in from the bottom.

It does a very good job, even passively, of reducing the heat of the CPU at load. Fits in perfectly on and the screws go into the screw holes very easily. If it gets hot enough to trigger the Pi firmware's fan trigger, it very quickly cools it down, so it has good airflow and fan speed.If you want the fan to be on more often, you'll have to manually change the boot configuration and restart the Pi. The TUI that does it for you has a rather high minimum temperature setting for the fan.

The Pi4 heatsink is a really nice design. It takes advantage of both active and passive cooling. I bought a couple of these and the only disappointment is that in one of them the fan lasted less than a day before it failed. Fortunately, the sheer size of the heatsink is probably sufficient under typical operation to keep everything plenty cool which is the true genius of this solution and gives it a feeling of redundancy and a measure of security.Included in the pack are several cut-to-size strips of heat transfer tape. These are a little hard to separate from each other and the clear `backing that must be removed may present a challenge given the small sizes. I would recommend having a set of fine point electronics tweezers available when you try to peel this back. If I had a suggestion for GeekPi for improvement, it would be to use a transfer tape that had a solid color backing that was different from the tape itself instead of the clear backing. Regardless, this is a very nice cooling system that works well even when the active component fails. I won't hesitate to buy more with my next Pi project.

My Raspberry Pi kit came with three heat sinks and a fan, but out of the box that fan was always on and surprisingly loud. This heatsink/fan combo was a great replacement for that setup. These thermal pads are less sticky than they could be, but they stayed in place with some care.Some minor modifications to the Canakit case were needed to fit the Pi + this unit back in the case. I had to trim back a retention tab or two, and clip out the plastic brackets that held the original fan in place.All told, full installation + reinstallation in the case took fewer than 10 minutes. Afterwords a prime number search demonstrated that the included installation instructions had worked perfectly the first time. The fan turned on and off as expected, and was even surprisingly quiet, at least at lower speeds.CPU temp stayed at/bellow

The fan came with all necessary mounting screws, leads for the fan, and two pads for each surface. Thankfully, one was messed up so I was glad to have an automatic spare. The heat spreader covers almost the whole board. I had to make a slight modification to my case to fit it in, and when I set the fan temp to 80c, the board never got over 60c in order to make the fan turn on. the heat dissipation works amazingly well. I had to set the temp to 55c and put a big load on it to even get it that high to make sure the fan actually worked as advertised (which it did), but then set it back to 80c. I highly recommend this product, does exactly what it says and does it very well.It also came with a neat little screwdriver, which I unfortunately can't comment on the quality of as I used my own, but it was a nice little touch in case you didn't have the proper size and type of your own.

To begin, I use my PI as a 24/7 PLEX media streaming server. The original fan that came with my Raspberry Pi 4 only had a red (+) and black (-) wire that would stay on at all times and that was very noisy.Reading that that the PI now includes a configuration feature where you can set up a fan that turns on whenever the CPU reaches certain temperature, I went to search for a fan with a blue wire (GPIO input).Unfortunately Amazon searches only came up with just the regular fans, until I came across this device.For $10, you get a better heat sync that keep your whole PI cool, as well as a fan with a programmable blue wire (GPIO). It's even small enough that I was able to fit into my transparent case. Surprisingly the fan, even inputted at 5v, is quieter than my old one.So far, I am very satisficed with this product and have found no issues on it as of this point.