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I have Blender 2.73a with AMD Radeon 3100 Graphics. I saw this page on how to make cycles render faster. It says when I go to User Preferences> System> Compute Device, It has no CUDA option, which means there is no GPU option. How can I fix this?

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  • $\begingroup$ Make sure your graphics drivers are up to date and that it is compatible with Blender, just because you have a graphics card doesn't mean it will work. $\endgroup$
    – J Sargent
    Mar 7, 2015 at 23:24
  • $\begingroup$ Just used the OpenCL steps. $\endgroup$ Mar 7, 2015 at 23:50
  • $\begingroup$ Does it show up on older versions of Blender? $\endgroup$
    – J Sargent
    Mar 7, 2015 at 23:57

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CUDA is only available for nvidia GPUs. AMD cards can use openCL (Disabled in official builds).

Here is the wiki page on it http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/GPU_Rendering

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