For testing power consumption, we took our test system and plugged it into a Kill-A-Watt power meter. For idle numbers, we allowed the system to idle on the desktop for 15 minutes and took the reading. For load numbers we ran three games at 1920×1080 and averaged the peak results seen on the power meter.
Power Consumption Results: Guess what? The Sapphire Toxic R9 270X and the PowerColor AX7870 DEVIL are right next to one another! That is because both share the same core! Power numbers are right where we expected them to be. The AMD R9 270X reference card was observed at 104 Watts at idle and then hit a maximum of 314 Watts when gaming. The Sapphire Toxic R9 270X is factory overclocked with more components, so we figured it would use more power and it does. This card was found to use slightly more power – 100 Watts at idle and 332 Watts at load.