# Can I choose which GPU to use?

**URL:** <https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149>\
**Category:** Support\
**Tags:** volume-rendering\
**Created:** [June 12, 2018, 10:52am UTC](https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149 "2018-06-12T10:52:36Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Fernando](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fernando/32/5640_2.png) [@Fernando](https://discourse.slicer.org/u/Fernando)\
**Post date:** [June 12, 2018, 12:58pm UTC](https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149/5 "2018-06-12T12:58:55Z")

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> [@lassoan](#):
>
> You can select which application should use which GPU in Nvidia control panel. The Slicer main application is SlicerApp-real.exe, you need to select that executable (Slicer.exe is only the application launcher).

Thanks, Andras.

I’m using approx. `300x400x330` images, Volume Rendering and large meshes.

As a reference, here’s what I did:

1. Go to Desktop
2. Right click and select NVIDIA Control Panel
3. On the left panel, 3D Settings → Manage 3D settings
4. Open Program Settings tab
5. Click on Add and Browse for the app (in my case, `C:\Program Files\Slicer 4.9.0-2018-06-02\bin\SlicerApp-real.exe`
6. Select the preferred graphics processor: “High-performance NVIDIA processor”

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_[View the full topic](https://discourse.slicer.org/t/can-i-choose-which-gpu-to-use/3149)._