Chip and efficiency monitoring method

The invention discloses a chip and an efficiency monitoring method. The chip comprises at least one oscillator circuit system and a controller circuit system. At least one oscillator circuit system isarranged at different positions in the chip and generates a plurality of oscillation signals respectively. The controller circuit system transmits the oscillation signals to an external system so asto determine the efficiency of the chip according to the oscillation signals. Each of the at least one oscillator circuitry includes a first oscillator circuit and a second oscillator circuit. The first oscillator circuit senses semiconductor device variations within the chip to generate a first one of the oscillation signals. A second oscillator circuit senses parasitic element variations withinthe chip to generate a second one of the oscillation signals. The chip can determine the efficiency according to the frequencies of a plurality of oscillation signals generated in the chip, and the plurality of oscillation sign