ASUS PN40 is an affordable and stylish option. This barebone features a Celeron N4000 and an internal heat sink. No sign of passive cooling (which is generally not a good sign) nor any particular attention given to convection, but the 6W Gemini Lake chip doesn't seem to suffer much. $159
Free to breathe at last. The case of the MintBox mini 2 is the heat sink. The diminutive box does feature an Apollo Lake Celeron J3455 from 2016 but is a complete PC. It comes with 4GB RAM, a 64GB SSD and Linut Mint 19. The political choice. $299
One step further. When power and extreme reliability are required, Logic Supply's ML100 Series delivers. The current version features Kaby Lake i3-7100U, i5-7300U or i7-8650U processors and is fully configurable. $689
