The dependence of microprocessor system energy consumption on software optimization

Energy efficiency and computational time become the key usability factors of the low power computational systems. In this sense optimization of the source code is a great challenge to make low power computational system competitive relative to other and adorable for the customers. The paper describes several experiments with a modern low power system that shows the influence of the program loop optimization on microprocessor system power consumption. Conclusions about positive effect of the automatic software optimization are presented.