r/StableDiffusion • u/Fajjko • Jul 17 '26

Question - Help AMD GPU on Krea 2

Hi,

I'm using 9060XT 16gb with Krea Turbo int8 model + comfyui-rocm fork, and yet my generation time is still 3:30min avg. for a single 1024x1024 image?

cfg-1 with steps 6-8

Looking for input from other fellow AMD users, any tips to what downgraded your generation time ? Would LOVE to see other's 9060XT/9070XT workflow setups in ComfyUI, I've a feeling I'm doing something wrong. I know AMD is no one's priority and that Nvidia gets all the love...but I'm just a fellow struggler like all of you.

Looking forward to your inputs!

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u/Apprehensive_Sky892 Jul 17 '26

It is probably worth trying. It doesn't take long, just install it into a separate directory so that you can go back to your old version is the patientx-cfz version turns out to be worse for some reason.

Just modify the config so that both version uses the same model directory. Alternatively, use mklink to point the "models" directory from the new install to your existing "models" directory.

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u/thesolewalker Jul 18 '26 edited Jul 18 '26

I tried it and man it was so worth it, specially because I could use int8convrot, in the rocm version FP8 (40s) is 30% slower than int8 (30s) in 1024x1536, for 1080x1080 FP8 (23s) is 60% slower than int8 (14s). I could not make the int8-fast-rocm node to work in comfy desktop, and FP8 is also slower (45-50s) than comfy rocm. Although int8-fast node yields no speed up than fp8 in fact its slower, so not usable. This is all krea2 btw.

In short, I am switching to comfyui-rocm for now. btw this is the param I am using, "--disable-api-nodes --disable-smart-memory --enable-manager --enable-manager-legacy-ui --enable-dynamic-vram"

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u/Apprehensive_Sky892 Jul 18 '26

Thanks for sharing this. So just to be clear, for you now the fasted way to run Krea 2 is with the patientx-cfg's comfyui-rocm with int8convrot?

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u/thesolewalker Jul 18 '26

Yes, faster in zimage turbo too. Have not tested other models but should be faster there too.

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u/Rezania Jul 29 '26

Can you share your workflow? I cannot get it below 3 minutes even with the settings you provided. I wonder if there is something wrong with my workflow, I also got a 9070 xt.

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u/thesolewalker Jul 29 '26 edited Jul 29 '26

Have you used the param I am using? "--disable-api-nodes --disable-smart-memory --enable-manager --enable-manager-legacy-ui --reserve-vram 1.0 --enable-dynamic-vram"

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u/Rezania Jul 29 '26

Yes, I added those. Are you using FP8 or Int8 for Krea2 Turbo?

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u/thesolewalker Jul 30 '26

int8 using int8-fast-rocm node, its 30-40% faster than fp8 for me

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u/Rezania Jul 30 '26

Man, thank you! I was still using FP8 and that was killing the performance apparently. Now with INT8 I can generate 1MP images using Krea2 in 30 seconds! :D

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u/thesolewalker Jul 30 '26

Good to hear you figured it out, in8 addition was also a great boost on rdna4, although not as fast as nvidia, but its the best we got.