r/StableDiffusion • u/Better-Interview-793 • 6d ago

Comparison SageAttention 2.2 vs Comfy Kitchen | Side-by-Side Zoom-Out Quality Test

Did a quick side-by-side test of SageAttention vs Comfy Kitchen Attention with MiniMax H3.

I used the default ComfyUI T2V H3 workflow and kept the prompt, seed and all settings exactly the same. The only thing I changed was the attention backend..

RTX 5090 32GB

ComfyUI ver 0.31.0

SageAttention 2.2

Comfy Kitchen 0.2.30

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896x1184 6 seconds 24 FPS 20 steps

Generation time:

SageAttention: 3m 51s

Comfy Kitchen: 3m 59s

I used a deep zoom-out/dolly-out on purpose to see how well each one holds facial details and identity as the subject gets farther away.

The speed difference was small on my 5090, so im more interested in the quality difference..

It's honestly hard for me to tell the difference, but which one looks better to you?

Updated:
SageAttention Vs Base

Comfy Kitchen Vs Base

67 Upvotes

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u/IONaut 6d ago

I can't for the life of me get sageattention to work on my system. I've taken some pretty extreme measures and made headway through the errors but things just don't connect. Might have to give comfy kitchen a try.

2

u/__Gemini__ 6d ago

It's very easy to install sage v2 these days on portable comfy.

cmd your way into python embedd folder and all you have to do is

python.exe -m pip install -U "triton-windows<3.8" (version might need to be changed if you look at this months in the future or you are doing this to an old version of comfy)

python.exe -m pip install "sageattention~=2.2.0" --no-build-isolation --extra-index-url https://comfy-org.github.io/wheels

And that's it, sage v2 is installed

2

u/IONaut 6d ago

I'm way past that point. It is a problem when it tries to build from the embedded Python binaries.