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If GPU Compute is greyed out in the settings, You are NOT using your GPU. Choose one of these from system settings other than "None". : r/blender
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cycles render engine - How To Use Your GPU Even If It Isn't On The List Of Supported GPUs? - Blender Stack Exchange
![rendering - Blender 2.8 uses CPU rather than GPU, contradicting with settings - Blender Stack Exchange rendering - Blender 2.8 uses CPU rather than GPU, contradicting with settings - Blender Stack Exchange](https://i.stack.imgur.com/f9rMj.png)
rendering - Blender 2.8 uses CPU rather than GPU, contradicting with settings - Blender Stack Exchange
![Blender shows that my GTX gpu is compatible with OptiX. Is it true? - Lighting and Rendering - Blender Artists Community Blender shows that my GTX gpu is compatible with OptiX. Is it true? - Lighting and Rendering - Blender Artists Community](https://blenderartists.org/uploads/default/original/4X/a/8/9/a8901ec44d7420b341da5757eb43e60261a509c8.jpeg)