Not to knock ARM SBCs — ARM is great and I think holds a lot of promise for the future, but there’s no arguing that the platform tends to be restrictive outside of mainstream devices (e.g. Samsung Galaxies and Macs).
Serve the Home has an ongoing series about evaluating these: https://www.servethehome.com/introducing-project-tinyminimic...
> Untested, but the idle power draw on it is supposed to be 10-15watts.
I haven't tested the "mini" one I have, but I also salvaged an older "SFF" HP from work, an 800 G2, with an i5-6500. I've replaced its spinning drive with 2 SATA SSDs (Samsung 840 EVO 512 GB), increased RAM to 2*8+16 GB and thrown in a 4-port intel i350 network adaptor. According to some watt-meter off Amazon it pulls around 16W while idling under Linux running three VMs on top of KVM (OpnSense (= FreeBSD), and two Linux). The highest I could get it was around 50 W while booting up.
The watt meter seems accurate enough. I tested it with a laptop for which I have two adaptors, one specified as 45W, the other 65. With the battery drained, screen backlight at max and a compilation taking 100% CPU, it was reported as drawing 46W and 55 respectively on the two adaptors.
> My only complaint about the unit is that I wish these were powered by USBC PD
Which unit is that? I would actually love that, especially if the USB-C port can also be used as a regular "docking" port, handling DP out and USB in. I could connect my monitor and peripherals with a single cable to it and call it a day, instead of having to deal with random power adaptors lying around. Bonus points if it's actually Thunderbolt.
> More common is to be powered by a 19V barrel jack, which would make replacements more of a pain if the external power supply dies.
I don't think so, those look like pretty much standard fare to me. Although I've heard stories about Dell doing shady stuff with the adaptors, trying to talk to them and stuff, AFAIK HP doesn't do that.