# PyTorch Compatibility with Older CUDA Versions

**URL:** <https://discuss.pytorch.org/t/pytorch-compatibility-with-older-cuda-versions/223220>\
**Category:** reinforcement-learning\
**Created:** [September 20, 2025, 3:46pm UTC](https://discuss.pytorch.org/t/pytorch-compatibility-with-older-cuda-versions/223220 "2025-09-20T15:46:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Harishankar14](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/harishankar14/32/78268_2.png) [@Harishankar14](https://discuss.pytorch.org/u/Harishankar14)\
**Post date:** [September 20, 2025, 3:46pm UTC](https://discuss.pytorch.org/t/pytorch-compatibility-with-older-cuda-versions/223220/1 "2025-09-20T15:46:44Z")

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Hey Guys,  
I have been working on an ML project, so i have a GPU server (An ancient one) which is backed by CUDA 3.0 .So what is the minimum version supported for PyTorch ?

Thank You 🙂

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**Author:** ![ptrblck](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ptrblck/32/1823_2.png) [@ptrblck](https://discuss.pytorch.org/u/ptrblck)\
**Post date:** [September 20, 2025, 3:46pm UTC](https://discuss.pytorch.org/t/pytorch-compatibility-with-older-cuda-versions/223220/2 "2025-09-20T15:46:54Z")

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Which GPU are you using?