An operating condition is controlled from viewpoints both processing capacity and power consumption. A CPU 11 includes, for example, a plurality of CPU cores 11a to 11d, and configured to such that an operating condition can be varied. A performance table 26 is a table representing a relationship between the operating condition of the CPU 11 and the processing capacity of the CPU 11. A power consumption table 27 is a table representing a relationship between the operating condition of the CPU 11 and power consumption. An operation control unit 22 controls the operating condition of the CPU 11 referring to the performance table 26 and the power consumption table 27.