No, amperes is the number to look at. If you just want to deliver more power on the SAME wire, you can do so by increasing the voltage. This is why a pretty thi

No, amperes is the number to look at. If you just want to deliver more power on the SAME wire, you can do so by increasing the voltage. This is why a pretty thin wire can deliver power to a high speed train, or even an entire town. Trains often use voltages in the 16-50 kV range, and power lines that power entire towns can be upwards of 100 kV; at that voltage the entire town's average power might be only a handful of amps. (Heat dissipation of a resistive wire is I^2*R, not dependent on voltage.) In the case of a CPU, higher voltages don't work with the semiconductors, so they have no choice but to use high amperes, and that becomes a problem.