“In general it does what it should: It keeps my Raspberry Pi 4 cool. Highest temperature I achieved was 65.2°C. Before (with a single heatsink of the size of the CPU) it occasionally displayed the "too hot" symbol on the screen. Now it no more does so.
But, and that's seems kinda obvious, but still was unexpected: The whole heatsink including the bottom part as well as the USB ports still gets so hot that you can't touch it for more than just a moment. You have basically no chance to e.g. relocate the Raspberry Pi a bit on the desk, without getting burned on your fingertips. It's even worse if you want to unplug USB devices, the Micro-HDMI cable or the USB C power cable, because you need to pull the cable while pressing against the hot heatsink "case".
Another issue that the hot parts are also very close to the surface the Raspberry Pi stands on. The screws don't seem to get that hot, though, but aren't that much sticking out of the case. So without any (heat resistant) rubber feet elevating the case a bit from the surface, I would be very cautious to put the Raspberry Pi on furniture with cheap (plastic) veneer or so.
So despite it does what it should do, I can't really recommend to use it as e.g. tiny desktop or for experiments where you often have to unplug devices or screens. For a desktop I'd rather use e.g. a Pibow case with that big, rectangular Raspberry Pi heatsink from Pimoroni: https://shop.pimoroni.com/products/raspberry-pi-4-heatsink or a heatsink case where not the _whole_ case is the heatsink but e.g. just the upper half or so.
Of course there are probably use cases where this doesn't matter, but so far I couldn't really imagine one. :-/”
“Excellent piece of kit, which makes the Rasperry Pi look awesome. Installation is easy although the instructions only mentioned adding a heat pad to the CPU, whereas there seemed to be pieces for three of the components. Other than that the case is working as expected.”
