In computers the "work" is mostly not physically impactful apart from the creation of light from a monitor, or the application of magnetism to a disk. You could

In computers the "work" is mostly not physically impactful apart from the creation of light from a monitor, or the application of magnetism to a disk. You could say all the energy that goes to heat instead is waste, but as with mechanical devices, there's no way to be perfectly efficient. Some amount of energy loss to heat is strictly necessary to process logic.