AMD Trinity APU Performance-Per-Watt On Linux
Written by Michael Larabel in Hardware on 20 October 2012 at 03:36 PM EDT. 3 Comments
For those not over in the Czech Republic this weekend for the Linux events going on here, here are some more data points for the AMD A10-5800K "Trinity" APU to look at under Linux.

I have already delivered many A10-5800K Linux benchmarks including articles looking closely at the integrated Radeon HD 7660D graphics on Linux and the AMD Trinity memory performance. I have also done initial tests of compiler tuning for the AMD Piledriver cores, a.k.a. the "Bulldozer 2" micro-architecture.

Being uploaded this weekend are simply some performance-per-Watt numbers comparing the A10-5800K at its stock speeds to being overclocked to 4.40GHz and then running the previous-generation AMD A8-3870K "Llano" APU. The A8-3870K was benchmarked from the same hardware and Linux software stack as its newer A10 brother.

Find the results on with full system details and all of the results. Simply put, the performance-per-Watt of Trinity isn't always better than Llano. In some workloads the performance-per-Watt of Trinity is higher while in other cases it's the same or even slightly worse in select cases.

The Phoronix Test Suite is able to automatically monitor the system power consumption (via IPMI or select USB-based monitors) and also compute the performance-per-Watt for individual results by simply setting the PERFORMANCE_PER_WATT=1 environment variable or the MONITOR=all environment variable for monitoring all system sensors during testing. All of this is fully automated and seamless. In the case of this testing, a WattsUp USB power meter was used for measuring the overall AC power consumption at the power supply.

Again, see the results in full on

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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