They also sell a heatsink for mere $21 (on AliExpress), just in case you don't know how to fit a spare PC cooler onto it.

That's quite a lot for the very heatsink that still results in those overheating problems I mentioned. A standard CPU cooler will not be mountable on this in any reasonable way, that's like parking a truck on a lawn chair.

I recently tested a palmshell with a N100 from Radxa too [0]

It performs well but there is definitely a thermal problem compared to other N100 based systems I got.

- https://palmshell.io/slim-x4l