Well, considering the power consumption of the data centers and the heat they generate, I wouldn't call that "incredibly efficient". Yes, a processor runs on ~

Well, considering the power consumption of the data centers and the heat they generate, I wouldn't call that "incredibly efficient". Yes, a processor runs on ~1.5V, but that small post stamps generate incredible amounts of heat for what they do. I can stand behind a rack of them to warm myself during prolonged work in our data center.