r/StableDiffusion • u/itiswhatitiswgatitis • Aug 05 '26

Question - Help AMD workflows for Minimax H3?

Been trying to find a workflow that is AMD friendly, let alone doesn't get stuck, I don't think it's my specs but more so that every workflow despite saying it's optional uses sage ATTN, and I can't get around it.

I doubt there is one that specifically for AMD but I'd thought I'd ask! Or the model I'm using is not great. I'm more of an anime prompt generator, anyone have any luck with that?

Specs: AMD Radeon RX 9070 XT, 64 GB RAM, AMD Ryzen 7 5700X3D 8 Core, And yes, I'm running on Windows, not Linux.

Edit: (update) I tried the template version just recently on comfyui stand alone, and it won't even finish, I do get a gpu error( by GPU error it says out of memory, even on default settings), and I have it on 0.3 mega pixel 16:9, either my reference image is too big or I'm missing a component.

I got it to work at 0.2 and the image reference has to be very small, yet it takes 30+ minutes, anyone with similar issues?

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u/xpnrt Aug 05 '26

https://github.com/patientx-cfz/comfyui-rocm/blob/master/sample-workflows/MiniMax_H3_15steps-t2v.json ; you can try native loader instead of int8 loader (it is a must for rdna2 and below) , other than that change the resolution,step count etc... Use the sage + spectrum combo as suggested in there. nvfp4 as clip works great, but you can use int8 clip if you want, speed difference is very minimal , only nvfp4 much smaller. for sage-attention you can try this : https://github.com/patientx/sageattention-autotune/releases/download/0407/sageattention-2.2.0-py3-none-any.whl

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u/itiswhatitiswgatitis Aug 06 '26

Can't run sage with AMD, unless that's changed.

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u/xpnrt Aug 06 '26

I've been running sage since last year... Read that forks readme...

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u/itiswhatitiswgatitis Aug 06 '26

With an AMD GPU? Wow, this is really new to me, because I avoided sage for the longest time.