We measure the amount of power drawn from the wall by the entire test system. Our Core i7-5960X CPU is heavily overclocked and has a large bearing on the power draw readings when it is heavily loaded in GTA V. The important information is the difference in power draw levels between each card.
The PNY GTX950 is one of the more efficient running designs and it consumes around 15 watts less under load than the Gigabyte GTX950 Xtreme model which we tested in recent weeks. All Maxwell architecture is efficient however when compared against current AMD technology.