"I recently got my hand on a cirrus7 nimbini passive cooled SFF PC and decided to put an Ryzen 7840HS board in it (instead of an INTEL NUC). In order to fit the AOOSTAR GEM10 inside the nimbini, I had to do a couple of mods... First, I machined a custom coldplate for the GEM10 board - the coldplate will also cover the VRMs and memory chips. After about 20 minutes of stress testing @45W the temperature stabilizes well below 80C. And yeah, gaming performance is also quite good for a passive cooled SFF PC of that size"
Source: SFF Network