But I've to admit that I never measured consumption so far (and don't even find the board currently since mislayed somewhere recently).
tkaiser, now that you have found back the EspressoBin (I assume it's the 1GB variant?), could you update the ranking?
I would love to see how its power consumption compares to the HC1 in the "idle but with a 2.5 HDD connected in standby" scenario. I'd assume the SoC will consume significantly less, and also there's no overhead coming from the USB-SATA bridge. But the EspressoBin apparently _requires_ a 12V supply, and I don't know how much extra consumption that means (e.g. voltage regulators).
Anyone has "at the wall" espressoBin consumption figures, with a (sleeping) 2.5 disk attached to it?