“Good product, I use these when testing RPi solutions, and even use the two larger heat sinks when using the ArgonOne FanHats to help with CPU intensive applications and they work great. Once I have tested a solution and want to deploy it (such as my 3CX server, Open Media Vault Servers, Pi Hole server or my Octoprint machine) I normally move them into an Argon One aluminium case with intelligent fan and heatsinks built in. But for most applications I would be happy with these heat sinks and an argonone fanhat.”