I thought this video was rather interesting, because at 12:27, the presenter crunches the numbers to find out how many years it would take for a new computer purchase to be more environmentally friendly (in regards to total CO2 expended) compared to using a less efficient used model.
Depending on the specific use case, it could take as little as 3 years to breakeven in terms of CO2 if both systems were at max power draw forever, and as long as 30 if the systems are mostly at idle.
Well, the N100 does have a lot more breathing space in terms of computing power, so it’s maybe a better bet for something you want to use for a decade or more, and that remote control I linked to above does work fine, except for the power button (which will power your Linux off but won’t power it back on).
I actually tried an Android TV Box (which is really just and SBC in the same range of processing power as the Pi) for this before going for the Mini PC and it was simply not as smooth operating.
That Mini-PC has enough computing power room (plus the right processing extensions) that I can be torrenting over OpenVPN on a 1Gb/s connection whilst watching a video from a local file and it’s not at all noticeable on the video playback.