Superconduction at room temp would all for less current consumption due to resistance inside the metal layer for chips, letting them run cooler and faster.

MRIs use massive, supercooled magnets. If you can do the same at room temp, you could potentially have a portable or much smaller and more efficient MRI.

If you can levitate an object, you can use a lot less power running electromagnets to run things like maglev trains.

If you have power lines that have zero resistance, you can reduce wasted energy. Power lines will actually sag under heavy load due to heat and cause outages or forest fires, this could be avoided.