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 Battlefield 4 at 1920×1080 and recorded the average idle reading and the peak gaming reading on the power meter.
Power Consumption Results: The AMD Radeon R9 Nano used more power than the ASUS GeForce GTX 970 Mini-ITX card, which shouldn’t come as a big shock to anyone. In BF4 we found that the Nano used 70 Watts more power in the scene we use to benchmark the cards with FRAPS. At idle the AMD Radeon R9 Nano was found to use 5W more power, which isn’t too bad.