AMD Radeon RX 480 On Linux
During the course of the performance-per-Watt testing, the Phoronix Test Suite was also monitoring the temperature of each GPU during the Linux benchmarking phase.
The Radeon RX 480 reference model had an average temperature of 65 Celsisus on the open-source driver or 70 Celsius when using the closed-source driver. The peak temperature for the Radeon RX 480 was 81 degrees.
Here's also the overall AC system power data during the duration of the multiple performance-per-Watt benchmarks. The Radeon RX 480 system configuration had an average power draw of 174 Watts with a peak of 234 Watts. The GeForce GTX 970 meanwhile had an average power draw of 156 Watts and the GTX 1070 at 151 Watts.