So you're claiming that processors behave exactly the same way as resistors?

It's not true that a processor conversts ALL of the energy it consumes as heat, because things like transistor flip-flops consume energy in addition to producing waste in the form of heat.

Their use to waste ratio might be low, but it's not zero as you implied.

Yes, with regards to energy conversion - electricity in, heat out. In a processor, the energy _is_ used to perform computation, but it is not "consumed" but converted to heat.

(The phrase 'consume energy' actually only makes sense if you're talking about nuclear reactions)

that can't be all true - isn't some of it as radiated energy in RF spectrum?

He wasn't saying that the only energy given off was that or heat or that all energy put in was given off as heat he said, you could run the arm processor on the portion of energy given off as heat.

Processors transition around 95%+ of their energy to heat so it's not a significant statement. (A little is used to communicate with RAM etc.)

touche sir. (although that doesn't really affect my point)