AMD Athlon 5350 / 5150 & Sempron 3850 / 2650

Now onto the power and thermal data before getting back to more Linux raw performance results...

There was only about a 4 Celsius difference between the coolest and hottest AM1 APU. The same heatsink fan was used during testing along with Arctic Silver thermal paste. The average operating temperature when running this game for these APUs was about 20~24 Celsius.

The system power consumption for the four APUs were about the same, which is expected given they all have a 25 Watt TDP. The average system power draw when running Xonotic was 34~36 Watts. With not much in the way of power difference, the Athlons obviously had the greatest power efficiency. The system power consumption was monitored by the Phoronix Test Suite using a WattsUp USB power meter measuring the overall AC power draw.

When running the C-Ray multi-threaded ray-tracer, the average temperature of these APUs were about 27 Celsius while the dual-core Sempron 2650 was just slightly lower at 24 Celsius. The peak temperature recorded for any of the APUs were 29 Celsius.

The dual-core Sempron 2650 had an average power draw of 34 Watts under this heavy CPU load while the quad-core APUs were at 38~39 Watts.

Here's a look at the overall CPU temperature when running a wide range of benchmarks.... None of the APUs ever hit even 30 Celsius, as reported by the AMD Linux thermal driver and roughly confirmed by rebooting and going into the ASUS UEFI setup.

The system power consumption under the various graphics and processor loads averaged out to 34~35 Watts with the ASUS AM1 motherboard, 4GB of RAM, and SSD when the Phoronix Test Suite was polling the data via the WattsUp USB AC power meter. See more of the thermal and power data from this testing within this OpenBenchmarking.org result file.