What's the lowest CUDA toolkit version required?

[PromptExpert]

And, what's the lowest GPU required?

[aliencaocao]

CUDA 11.3 is needed unless you downgrade pytorch but I do not know if older pytorch works on this repo.
For GPU, it is Kelper and later (for cuda 11.3), with CUDA compute capability 3.5 and above. HOWEVER, xformers only support Pascal and newer.

[biocrypt]

@aliencaocao what should I do to have Stable Diffusion working on CC 3.5 Kepler GPU?

[aliencaocao]

sorry but you cant. Its simply too old. You need a newer GPU at least cuda 7.0+

[biocrypt]

I am using cuda 11.4

[aliencaocao]

I mean GPUs with cuda compute capability 7.0, not cuda software version. That means Turing/RTX 2000 and newer

[biocrypt]

@aliencaocao what version of Stable Diffusion was supporting Kepler GPU CC==3.5?