> Why? There is no evidence that ARM is the only power efficient CPU. i5, i3 and n100 are all power efficient.

They are, but the motherboard is not, or at least not as much as an ARM board.

> Why? Disable onboard video if you care that much.

And it would boot... how? AFAIK, no UEFI system is capable of booting headless and very very few BIOS systems were.

> No, that's not what you do for a power efficient NAS. You build an i3, i5 or n100, turn off all unneeded peripherals, and configure bios as needed to your level of desired power consumption. under 10W is achievable.

I very much doubt that. N100 maybe, just maybe, could go lower than 20W if the power source is very very efficient, but I haven't seen any system with 10+ SATA ports. The commonly suggested solution here, to add a server SAS/SATA controller, would double or triple the idle power.

> I very much doubt that. N100 maybe, just maybe, could go lower than 20W if the power source is very very efficient, but I haven't seen any system with 10+ SATA ports. The commonly suggested solution here, to add a server SAS/SATA controller, would double or triple the idle power.

The N100 on its own can go quite low - my N305 system idles around 5W. (But laptop, so zero SATA ports.)