PC builders know about wattage requirements all too well. It's actually literally more efficient and more lucrative to use your PC as a space heater by mining t

PC builders know about wattage requirements all too well. It's actually literally more efficient and more lucrative to use your PC as a space heater by mining the altcoin du jour on your desktop than to run a space heater, because at least some of the energy is used for something profitable over just converting it into heat, which the PC will do anyway.