Maximizing output with minimal resources.

Maximizing output using minimal energy.

Conversion ratio of heat to work.

The term quantum efficiency may apply to incident photon to converted electron ratio of a photosensitive device, or it may refer to the TMR effect of a magnetic tunnel junction.

Optimal distribution of resources economically.

Productive efficiency is a type of economic efficiency achieved when a firm operates at minimum costs, by using the appropriate inputs to produce the maximum output possible.

Achieving maximum output with minimum.