# Questionable performance on GPU workstation

**URL:** <https://discourse.slicer.org/t/questionable-performance-on-gpu-workstation/17140>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [April 16, 2021, 9:39pm UTC](https://discourse.slicer.org/t/questionable-performance-on-gpu-workstation/17140 "2021-04-16T21:39:01Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [April 17, 2021, 3:58am UTC](https://discourse.slicer.org/t/questionable-performance-on-gpu-workstation/17140/3 "2021-04-17T03:58:15Z")

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Few more comments:

I see you have a SSD as your OS drive. You would benefit from fast I/O operations, if you keep your datasets on SSD. When saving NRRD (or nifti) volumes, Slicer tries to compress files by default. As far as I know, compression is currently single-threaded and can be quite long for large datasets. When you are saving, you can optionally disable compression (expand Options, and uncheck compress). Here is a related post showing the impact compression may have on I/O: [Can Slicer utilise multiple cores on linux? - #6 by muratmaga](https://discourse.slicer.org/t/can-slicer-utilise-multiple-cores-on-linux/9240/6)

Your GPU is good that you should get very nice 3D rendering performance in volume rendering. If it stutters, make sure to set the Rendering quality to “Normal” (Advanced-\>Techniques-\>Quality in Volume Rendering module).

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