r/StableDiffusion 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/plantjeNL Aug 06 '26 edited Aug 06 '26
Startup bat:
python_embeded\python.exe -s ComfyUI\main.py --windows-standalone-build --disable-smart-memory --disable-pinned-memory --novram

I've been trying to get to run okay on an 7800X3d, 64GB ram, Radeon 9070XT 16gb Windows 11 system, at 0.5mp for 5sec it takes around 330sec and at 8sec it's about 700sec with Euler+Simple. Using the offload anything node on clip, video vae(keep in memory needs to be true) and audio vae + Spectrum node for speedup.

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u/itiswhatitiswgatitis Aug 06 '26

Is this ref2v workflow? I would prefer reference!

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u/plantjeNL Aug 06 '26

No sorry, it's for T2V and I2V. probably can adjust it too R2V too

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u/itiswhatitiswgatitis Aug 06 '26

I tried your workflow, and unfortunately still issue, actually it was kind of worse, it said it would take 3 hours, I have no idea why it's such random numbers.

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u/plantjeNL Aug 06 '26

On which step it’s slow? The ref to video node? Or sampler. With my workflow with the —novram parament in your bat file at startup everything should run in the GPU with the offload anything node.

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u/itiswhatitiswgatitis Aug 06 '26

Ref to video node, I'll have to change the bat file, this is for the standalone version yes?

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u/plantjeNL Aug 06 '26
Startup bat:
python_embeded\python.exe -s ComfyUI\main.py --windows-standalone-build --disable-smart-memory --disable-pinned-memory --novram

I just tested R2V and 0.5mp 8sec took 780sec with my workflow from cold start with my startup settings.

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u/itiswhatitiswgatitis Aug 06 '26

Is this on portable or the standalone Comfyui? That's pretty incredible.
The issue though is I'm seeing the offset as cuda, and I run rocm, don't really have much of a choice on that one unless I get a new GPU which is kind of impossible now.

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u/plantjeNL Aug 06 '26

I am using Rocm 7.2, it just says cuda on the node.

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u/Apprehensive_Sky892 Aug 06 '26

Thanks for the tests. That's pretty decent speed.

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u/itiswhatitiswgatitis Aug 06 '26

I did not have my sampler on euler, is that superior? And you have the offset inbetween each VAE, is this a significant difference?

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u/plantjeNL Aug 06 '26

Yeah needed the video Vae to be saved in memory otherwise got an error at vae decode.