Review on iUniker Aluminum Raspberry Pi 4 Case with Passive Cooling and Heatsink Cooler - Compatible with Raspberry Pi 4 Model B (8GB/4GB/2GB) by Mondreka Rosenhoover

So this heatsink/case will probably work for you under normal conditions, but it burned out when tested with CPUBURN. reach temperatures of over 80 degrees. It was so hot I could only keep my hand on the suitcase for a few seconds before I had to take it off. To see how much I could cool the case and Pi, I took out a USB fan and brought the temperature up to 65 degrees. I didn't want the fan to be running so instead I decided to add a 1-2-3 block of steel on top and it helped dissipate the extra heat. With normal usage when running LibreELEC to host a Plex server and watch Plex movies, it doesn't get hot. thermal pads, and they were easy enough to place. I used the edge of a knife to gently peel away the plastic so as not to damage the gasket. If they made a case with big aluminum fins on top for better heat dissipation, I would buy it.