Slightly off topic; but on fans I recently got a totally fanless mini-pc (zotac) loaded it up with 16gb of ram and a tb ssd and the utter silence in my office is amazing. Since switching off apple (I used the fanless 'macbook' models for a while) I'd normally work with headphones, but I've found the difference to be noticeable.

FWIW it runs OpenBSD and is currently at 52C.. When doing a heavy compile or something it can get up to about 80. Mounted to the back of a monitor, can't even see it.

10/10 would recommend.