Useful info, esp that jonnyGURU review, thanks
It's a good review for sure, but remember it is only one review. I'd like to see a repeat with some better AC-DC PSUs, especially on the 12V picoPSUs. I'm not sure why the 'wide input' picoPSU should be more efficient than the 12V version, in theory the 12V should be the best. Either the crappy EDAC bricks crippled the 12V picoPSU in the review, or for some reason the 12V picoPSU is a worse design than the WI edition.
I didn't know the laptop 'standard' was 19V, and perhaps that is why Mini-ITX boards with built in power supply tend to be 19V, e.g. the Intel DH61AG
it's a new concept, Intel's "Thin Mini-ITX" form factor that was shown at this years Computex. While it's convenient I'm not sure it's ideal for efficiency. There's an extra voltage stepdown which surely introduces additional losses:
110V or 230V -> 19V -> 12V + 5V + 3.3V
why not make it simpler for better efficiency and just convert directly:
110V or 230V -> 12V + 5V + 3.3V
It's been a long time since I studied physics and electronics so I could be wrong...
As efficiency ranks high in my choice, I think I'll go this way in future
As my point above, I would like to see a higher quality, Energystar 5, power brick delivering 12V to the standard picoPSUs. According to the specs published by Mini-Box the picoPSU-160-XT ought to be the best if paired with a good AC-DC PSU.