i recently dusted off an old desktop that i hadnt used in a really long time. the GPU was a 1070 from 2016 i think and it wasnt even that high end when i bought it but it works surprisingly well. although im only using a 4b qwen model and only asking it very basic questions but its still better than nothing and it means i only need to switch a cloud model when i need to do something more complex. that GPU is going for 100-150 these days as well and im sure there are better options that are still cheap enough