I want 3 versions of pytorch

How do i have 3 version of pytorch readily available for comfyUI? I have an old quadro m2000 graphics card which is not supported by the latest version of pytorch for comfyui, so I’d like to use an old version of pytorch for that, i have a new gfx card arriving soon so i want the latest version of pytorch available and i want to use the CPU version of pytorch for a laugh