[ulrikrasmussen]

It is my understanding that computers would still need to somehow dissipate energy when they perform irreversible computations, and that will turn into heat. E.g. when you compute the AND of two bits, then the result is only one bit and you have to dispose of the remaining bit either as heat or as a garbage output signal.

[scarmig]

That's a thermodynamic limit, but we're not even close to hitting that yet.

RTP superconductors still aren't going to magically make computers emit zero heat, though; there are other sources besides resistive losses. I was under the impression that other factors dominated, though a couple people responded yesterday to tell me that resistance is the primary source of heat. Not an expert in that area, would love for someone who does chipset design to clarify.