The difference in energy stored in a capacitor at two different voltages is 0.5*C*(V^2). A chip will burn that energy 2*(frequency) times per second, so P=C*(V

The difference in energy stored in a capacitor at two different voltages is 0.5*C*(V^2). A chip will burn that energy 2*(frequency) times per second, so P=C*(V^2)*F. Edit: forgot a half