At 400W per socket, a measure I will call "Wockets" from now on, it's a wonder that cloud providers are not cashing in on the heat. My hottub only needs 3KW to heat it, so at 400 wockets we'd only need a couple of beefy servers to run it. Extend that out and we could have Azure health spas next to every data centre with hot tubs, saunas, steam rooms, pools etc. all heated by the DC. With the right setup and enough wockets you could probably have a bakery running using some clever heat exchanger. Or a pizza joint. Yes, the more cores the more pies you get cooked for free. This is the future!