I bought this to silence a NUC8i7BEH2 transformed into a Hackinstosh. I am running it with USB Wifi & Blutooth adapters (the onboard versions do not work with macOS). Temperatures at idle are in the low forties (@ ambient 20C). It can handle an all core CPU load (power consumption approx. 30W) without thermal throttling (temps stabilise in high sixties). I used the included thermal paste, but I might try something better in the future. Only caveat so far: Maxing out the integrated GPU alongside the CPU leads to a total power consumption of approx 45W and to thermal throttling (tested under macOS using Intel Power Gadget).
All of you intent on using this to edit & transcode videos all day long look somewhere else, but those interested in having a completely silent & very powerful HackMini for Web/Office and Audio editing work are going to be very pleased.