# How to change the GPU or CPU？

**URL:** <https://discourse.slicer.org/t/how-to-change-the-gpu-or-cpu/20675>\
**Category:** Support\
**Tags:** volume-rendering\
**Created:** [November 18, 2021, 3:52am UTC](https://discourse.slicer.org/t/how-to-change-the-gpu-or-cpu/20675 "2021-11-18T03:52:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![slicer365](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/slicer365/32/67549_2.png) [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Post date:** [November 18, 2021, 3:52am UTC](https://discourse.slicer.org/t/how-to-change-the-gpu-or-cpu/20675/1 "2021-11-18T03:52:03Z")

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About the VolumeRendering module,

when I select GPU as render, no image can appear in 3D view,

but when I select CPU rendering, it can appear,

but when I change other computer, the result is the opposite.

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<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 18, 2021, 1:34pm UTC](https://discourse.slicer.org/t/how-to-change-the-gpu-or-cpu/20675/2 "2021-11-18T13:34:53Z")

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CPU rendering should work anywhere, unless maybe you run out of memory of something - you can check for [error messages](https://slicer.readthedocs.io/en/latest/user_guide/user_interface.html?highlight=error%20log#status-bar).

GPU rendering may not work on some graphics cards due to hardware or driver limitations. These may or may not result in error messages.