Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension

Works great. I wanted a slim heat sink option to fit inside my RasPad 3 enclosure. I got it to fit by taking off the included fan on the heat sink and replacing it with the fan from my RasPad enclosure. The RasPad fan is large so you wont get all 4 screws in. I just tightened one screw in making the fan face the heat sink and it held fine. The Pi gets much better cooling compared to previous setup.One tricky part with the RasPad is getting the small accelerometer shim back on the GPIO pins for the auto rotate screen feature. I just soldered the shim to some 2x3 female pin headers to make it hold solid. If you use header pins the case fan won’t fit in its normal spot. If you move it into the heat sink like I did you won’t have a problem. If you get the shim on without header pins you can bend the GPIO pins to help retain it in place, but it was hard. I wanted a more solid connection.

This heatsink and fan combo keeps the Raspberry Pi cool even when I run benchmarks that put a 100% full load on the quad-core CPU. At full load the temperature of the CPU is 49 degrees C (120.2 degrees F) after 20 minutes of run time.If you are using a HAT on the GPIO pins the heatsink and fan are low profile enough to attach the HAT without a GPIO Extender Header. Picking the correct size standoffs to attach to the heatsink for supporting the HAT takes some trial and error. The kit does come with different size (height) standoffs so you should be able to find a size that works with your HAT.Since the fan is small it does make more noise than larger fans. It is not loud, just louder than bigger fans.

Affordable cooling protector that was easy to use.

Quality product. Does what it says

The installation was straightforward and hassle-free. The heatsink kit came with thermal adhesive pads, making it easy to securely attach the heatsinks to the main processor and other heat-sensitive components on the Raspberry Pi board. No additional tools or technical expertise were required, which is a big plus for users of all experience levels.

I got this because of excellent reviews, and slim profile for PoE. What I got was complete trash. The first one, only came with 2 screws in the fan, and after 2 days, makes this awful grinding sound mimicking an angry cat. And another has a stripped fan hole on heatsink. But that's not the biggest problem.The worst, is I had already bought 3 more. Upon investigating why one wouldn't set down completely (was warped. How!?), I realize that it DOESN'TEVEN MAKE CONTACT WITH THE CPU!!Yes, you read correctly. It sits right on the ram as intended, but there's a gap of space between the heatsink and cpu, ON ALL 4! (See image) Making this completely useless. It seems the piece that touches the ram chip, is longer that it should be, and causes the piece over the cpu to hover, and doesn't allow the whole heat shield to fasten down evenly on all 4 sides. I want to love this, maybe no one else realized this yet and that's why great ratings...idk. but I want 4 PROPER fitting heatsinks. Otherwise I'm just wasting money and space.UPDATE: Discovered the problem is the thermal tape on ram. You updated the package to come with it, but didn't update milling adjustments. If you don't use the thermal tape on ram chip, it fits. Sorry for the anger. Will apply thermal oaste to ram instead.Changed from 1 star to 3. Still don't like I had missing screws and stripped holes, and the fan is just a few millimeters too wide to place my poe hat.

Works perfect for the tight space the Raspberry Pi is in!

Being bigger, it disperses the heat further away from the chips. Looks boss