

Not every home heats their water with electric resistance heating. My previous place used natural gas for hot water, and my current home has a heat pump water heater, which has an effective efficiency much greater than a normal electric water heater.


Note that there’s really nothing inherently slower about sharing RAM; Apple’s processors have integrated graphics and the memory bandwidth can be higher than some dedicated GPUs. Apple just uses faster memory. Some PCs are (finally) taking this approach too, like the DGX Spark boxes from nVidia.