Do I need uninstall the older version when installing the most recent version?

Hi guys,

I am a beginner in CUDA programming and trying to install the toolkit.
I only want to keep one version of CUDA Toolkit in my system to save the space and keep it clean.
Do I need to uninstall CUDA Toolkit 8 first if I want to install v.10?
Btw, I am using Win7 OS now.
Thank you very much.

Yes, if you want to save space, you need to uninstall the old version.

https://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html#uninstall-cuda-software

Thank you for your answer. This is helpful.