Putin s Russia is not Yeltsin s Russia, when the West could simply shunt aside Russian concerns. Europe is vulnerable on many fronts, particularly in view of its dependence on Russian energy, while America s weakened presidency has diminished US influence in Russia.

However, power consumption by a chip is given by the equation P C V2 F, where P is power, C is the capacitance being switched per clock cycle (proportional to the number of transistors whose inputs change), V is voltage, and F is the processor frequency (cycles per second).