I live off the grid, with an office powered only by solar panels. My main work machine currently is a Macbook Pro. For various reasons, I want to ease off it and build a small, extremely energy-efficient desktop workstation. It would be in use about 10 hours during a typical day, with many spikes in resource usage (programming, desktop publishing, Photoshop, but no 3D, so decent on-board graphics might be sufficient).
I may have to take the workstation on travels a couple times a year so it should be compact. There is a specific, very good-looking fanless case that I would like to use that comes in Mini ITX format.
I understand things well enough to make informed energy-efficient choices re CPU, storage, etc., but the choice of mainboard remains a puzzle! Apparently, they all tend to consume 35-50 Watts while idling.
MSI offers the H100M Eco which promises an idle consumption of 16 Watts, but its form factor is Micro ATX!
Any ideas would be welcome.