30 PCS Raspberry Pi 4 Heatsink Kit with Thermal Conductive Adhesive Tape, Aluminum Heat Sink Cooler and Copper Heatsink for Raspberry Pi B B+ 2/3/4/5

I’ve been using these heatsinks for a while on multiple boards (Bitaxe and Nerdaxe setups), and they’ve been performing very well. After installation, I noticed a clear reduction in operating temperature under load. The aluminum and copper combination provides solid heat dissipation, and the adhesive tape holds firmly without shifting. Installation is simple and straightforward. Once mounted, they stay in place and do their job consistently. For anyone running Raspberry Pi boards or similar compact systems under sustained load, this kit provides reliable thermal improvement at a good value.

Great price and lots of different sizes. Used for my e90 EKP3

Nice heat sinks they stick very well so the adhesive is good. Replaced a motherboard in a TV and use several of these On the components that failed on the original due to high temps I also added a fan which is another review I left for the 120 mm fans

These help cooling a tiny bit, obviously they are not miracle workers but they help dissipate heat a little better. I used these not only on my RPis but on the voltage regulators on my (EVGA) GTX970. These GPUs are known to not have any form of cooling on the voltage regulators so they tend to fail often due to a VR going out from overheating.

All temps in Celsius......... Since you have to pull out a mortgage to get your hands on a RPI I settled on the OrangePi 5. I can verify that these "work" on it. The CPU sink is just a tad smaller than the CPU. But the memory sinks are spot on. As stated elsewhere, the adhesive tape they put on them is GARBAGE! Max'ing out all the cores the OPI5 will show temps in the 85 range without heat sink (but with a fan blowing straight at it). Adding the heatsink to the CPU with the garbage tape they supplied, it gets down to about 75. I peel the tape off, scratched away all the gooey residue, cleaned the contacts with a qtip and alcohol, and used some Arctic MX-4 compound I have laying around. Temps are now around 60-62 under full load. Could probably get down under 60 if these were a little bit taller. But for now, it seems like these are just light enough to stay stuck on with the grease. I plan to have my cluster built with them standing up on their side, so I will soon see if the grease is enough to hold them on. Will update if not. I'm thinking a day or 2 to let the grease set up. As for temps, I'd say with thermal paste these are just fine.

I bought them to cool the MOSFETs on my motherboard when I play heavy games, and they also make it look nice, great price and quality, very fast shipping

Keeps my adapter cool and even with the high power draw from my grow lights. I have lots of seedlings and need my lights to be a full brightness for good germination. For-get-me-nots, Alyssum, primrose, and Sundews, I lost too many adaptors trying to power my lights, they get hot and then...pow, adaptor is dead. Not with these sweet heat sinks. Even when I move my setup and jostle things they stay secure and keep everything cool to the touch.

I’m using a handful of these on a solenoid/housing for a CO2 regulator/bubble counter since the water tends to evaporate pretty quick. With a few of these stuck onto the solenoid/housing, evaporation slows down a lot. Typically it takes about a week for the water to evaporate but now it can last up to over a month or so. So these heat sinks are definitely doing their job.