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I have read an article about an AMD technology used in A series Kaveri processors called HSA

In few words they make processors with GPU cores, and HSA is basically a technology that makes the GPU help out the CPU cores, increasing the computing speed.

Their latest processor on the market (in A series) is the A10-7870K that has 12 cores (4 CPU + 8 GPU).

My question is, if I have a dedicated graphics card, will the GPU cores still be used with HSA? Or the 8 GPU cores will be totally inactive?

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Surprisingly, you can install a discrete GPU, AMD or non-AMD, and still have HSA-aware applications use the GCN cores on the APU for computations. This article discusses that:

Windows 7 and Windows 8 allow users to install multiple graphics drivers from different vendors. In my case I utilized a last generation GTX 580 (the MSI N580GTX Lightning) along with the AMD A10 7850K. These products coexist happily together on the MSI A88X-G45 Gaming motherboard. The monitor is attached to the NVIDIA card and all games are routed through that since it is the primary graphics adapter. Performance seems unaffected with both drivers active.

And the result:

These results make me hopeful about the potential of AMD’s latest APU. It can run side by side with a standalone card, and applications can leverage the performance of this unit. Now all we need is more HSA aware software. More time and more testing is needed for setups such as this, and we need to see if HSA enabled software really does see a boost from using the GPU portion of the APU as compared to a pure CPU piece of software or code that will run on the standalone GPU.

  • I was google searching for information like this for at least 30 minutes without any luck, and You found it in a few minutes. I have red the article and if I understood it right, this technology is not developed enough but it works. I will need some more research to decide if I should upgrade my processor or wait for the technology to develop some more. Thank You. – Divin3 Jul 18 '15 at 14:25

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