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I have a Radeon Vega 64 on a machine primarily used for computing, but have a collection of problems with the output graphics (freezes, mouse selection problem, etc). I tried all available AMD drivers, but still not reliable.

I decided to buy a cheap Nvidia GPU like GTX 9xx for video output and use the AMD GPU only for computing tasks.

  1. Can I use two GPU independently for different tasks?
  2. How should I set up the system to avoid any conflict or problem?

Note that I am not talking about SLI here. I just don't want to give up the computing power of Vega 64.

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Yes, you can do it.

If your computational program supports AMD OpenCL, then typically you can select a device or it will default to your AMD card.

However, as far as I know, games use the card with the monitor plugged into it. I think it is only possible with SLI or Crossfire.

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  • Thanks for the confirmation. There is no gaming activity on this machine.
    – Googlebot
    Mar 11, 2019 at 19:20

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