The Dell wyse 5070 idles close to 3-5 watts. A bit more than the pi, but pretty close. It's older now, can be picked up cheaper than a pi off eBay. DDR 4, sata m.2, on board emmc flash. M.2 a-key for WiFi. Max 16GB ram.
When you throw in m.2, lots of ram, all that IO eats power. So the minimum idle power creeps up. Arm boards too.
When you throw in m.2, lots of ram, all that IO eats power. So the minimum idle power creeps up. Arm boards too.