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Robert
Reviewed in Australia on February 26, 2025
The GeeekPi PWM Controllable Fans for Raspberry Pi are fantastic! They’re the perfect size at 40x40x10mm and fit easily onto my Raspberry Pi setup. The PWM control allows me to adjust the fan speed, giving me the flexibility to keep my system cool without unnecessary noise. The fans are quiet yet efficient, ensuring my Pi runs at optimal temperatures during long sessions or heavy use. The 2-pack is great value, and the installation was a breeze. If you want to keep your Raspberry Pi cool while maintaining control over fan noise, this is an excellent choice!
Customer
Reviewed in the United States on February 23, 2025
Under Fedora 41 running on a Raspberry Pi 3b+ addingdtoverlay=gpio-fan,gpiopin=18,temp=50000to /boot/efi/config.txtruns this fan (assuming you have the pwm input connected to GPIO 18/pin 12) once the CPU temp gets above 50C.
nate
Reviewed in Australia on August 26, 2024
I have split these into a USB and use them as one to intake air into my NVR,and the other to cool the heatsink on it,as the NVR I have only came with 1 exhaust, definitely quite,the nvrs exhaust fan reduced it speed quite a bit and found it doest stutter during phone viewing,and the NVR is actually well ventilated on a bench,this blows quite a bit of air for how small n quite these are.highly recommend
vdawg
Reviewed in the United States on May 12, 2024
The fans don't move a lot of air, but they are very quiet, which was the priority for me in my case. However, the first fan stopped working after one day. Luckily, I only needed one, and the second fan has been working properly for a couple of days now. It would have been nice to have a backup, though. Given that I only got one working fan for the price, I am rating this a 3 out of 5. If both had worked, I would have rated these a 5.UPDATE: Seller contacted me quickly and offered to make it (more than) right. For that reason, I am upgrading my rating to 5 stars. It's rare for vendors to stand 100% behind their products and this vendor deserves credit for that. Thanks!
R.L.K.
Reviewed in the United States on February 3, 2024
I was able to just stand it off the end of the board blowing half the air over the CPU heat sink and the other half between the board and the m.2 card mounted under the board. I set the cofig.txt line to trigger at 50c and under the load of an Influxdb/node-red/MQTT stack, Pihole and running python scripts watching the USB and BLE for new data (~25-30% avg load) it cycles between ~49c and ~41c about every 5min.... so a duty cycle of ~50%. Pre-fan, with the tall heat sink it was running at about 75c. It's very quiet when it's running.It doesn't interfere with Bluetooth comms as the jury rigged 12v old zeon cpu fan I tried first did. Wes' commentary on using GPIO-18 was most helpful for hookup instructions. Thanks.
Sherman
Reviewed in Australia on November 7, 2024
It works as advertised, not too noise.
Ivan
Reviewed in Canada on March 7, 2023
Works from 5v/3v. PWM input is not required, works even if blue wire is not connected.
Danny S.
Reviewed in the United States on April 21, 2023
works great on my orange pi 5Dont forget to isntall fan-control to use it though.
Dwayne White
Reviewed in the United States on April 13, 2023
Bought this to help keep my audio receiver cool. Plugged into receiver usb port which then at power up starts the fans and they do the job, nice and quiet.
Brian Bute
Reviewed in Canada on March 15, 2022
They are very quiet when they are running, but only run when needed.
Tom
Reviewed in the United States on September 8, 2021
I have this cooling my Raspberry Pi 4 in a home made Plexiglass case that I use as a Kodi media server inside a entertainment center. It's already about 80 F degrees inside. The Pi was running at over 72 C (161 F). It now stays below 58 C (136 F). I control the fan with fan_ctrl.py that throttles the fan as needed.
Joe V
Reviewed in the United States on August 9, 2021
On the Pi box, need some holes, but if that's easy for you, then this works well with the OS control; however, it seems to always kick in at 60 C, and off at 50C. Large bang bang control. Not sure if the set temp changes as the raspbian would indicates with out reboot. Overall, fan works nice and is pretty quite, but good that it turns off (it's not No Fan quite)
Les
Reviewed in the United States on July 19, 2021
First of all, this is a larger fan than I intended to order, I was looking for a PWM fan to replace the "standard" size fan that most cases come with. My fault it is what it is.With that being said, and not wanting to deal with a return, I decided to go ahead and modify my case to use it, and I'm pretty happy that I did!This fan is set up to be a "pull" fan. I personally prefer push fans on a Pi. To use it as a pull fan, it barely fits between the camera and display port if you use one of the "9 layer cases." And the screws are uncomfortably long in my opinion, I would definitely shorten the screws to have them recessed in the fan a little bit. You would definitely not be able to use it in a pull configuration in a case like mine with heat syncs.On the positive side, this fan is VERY quiet, much better than 20mm fans, and the PWM control works as expected.During a 10 minute stress test, in a push configuration, the fan was able to drop the temperature from 75C to ~62C in about 15 seconds(what I had the fan cut on/off set to).Would I recommend it? Sure, if you have a case set up for a 40mm fan, or you dont mind modifying a case.
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