> I'm more curious on how do Intel CPUs compare to space heaters? (I mean in comparison to the regular electric resistance heaters.) The 'heat' produced by a C

> I'm more curious on how do Intel CPUs compare to space heaters? (I mean in comparison to the regular electric resistance heaters.) The 'heat' produced by a CPU in operation is resistive heating. The heat results from the current flowing through the parasitic resistances of the silicon die. So it would be equally efficient as a space heater (as in, 100% of electrical wattage in becomes heat out). The difference is a space heater produces only heat, while a CPU might be performing some other function, while also producing heat.