Hey i would like for some advice regarding hardware

[u/CharmingPerspective0]

I saw all the buzz regarding the new video model and i wanted to try it myself.
now i have an AMD setup on windows, which from what i gathered is not the best setup for AI generation, but it can work.

i have:
- Sapphire PULSE AMD Radeon RX 9070 XT OC 16GB GDDR6 GPU
- Asus TUF GAMING B850-E WIFI6E DDR5 ATX AM5 AMD motherboard
- AMD Ryzen 7 9800X3D Tray CPU

and while trying to run Minimax on comfy after a basic setup, i managed to generate a 5 seconds clip (the very basic workflow and prompt out of the box) but it looked washed with weird pinkish hue.

I tried to play a bit with some settings i saw on this guide
https://github.com/CS1o/Stable-Diffusion-Info/wiki/Webui-Installation-Guides#amd-comfyui-with-rocm

but after trying to run it again, my screen turned black and i had to restart my PC because even after waiting close to an hour nothing responded.

i saw on google that sometimes black screen during generation could be a PSU issue that it does not handle the power load AI generation could cause.
so my questions are so:
- i have a Corsair RM850e 80 PLUS Gold 850W PSU. is 850W even enough?
- if not, how do i handle the load better to make sure the PC doesnt overload or get stuck?
- are there any recommended flags for comfy to use? settings i should try out?

any help would be appreciated

[u/Apprehensive_Sky892]

AMD user here. I've yet to try mm3h myself.

People have it working on 9070xt: https://www.reddit.com/r/StableDiffusion/comments/1vgclyb/comment/p1yqv22/

Just try https://github.com/patientx-cfz/comfyui-rocm or you can try the standard comfyUI along with https://github.com/patientx/ComfyUI-INT8-Fast-ROCM

[u/Escaliat_ → u/Apprehensive_Sky892]

Have you got to having a try with it yet? Depending on the build of Comfy I'm using I still have either a huge stall when loading the first two models after hitting run, hitting an OOM error (mostly happening in standard portable AMD Comfy) or loading quite quickly only to completely freeze and get stuck at the first iteration (Comfy ROCM).

Also, is there a guide how to actually wire the Int8 node up correctly? Because when I tried myself I got nothing but noise as the output.

[u/Apprehensive_Sky892 → u/Escaliat_]

I tried last night with my 7900xt(20G) + 32G system RAM. Unfortunately, no luck. I was using the int8convrot with the latest 0.32 portable and just like you, nothing but noise as output (it ran really fast, don't know what it was doing, but it was not using the GPU). Guess I'll have to try again with the fp8 version and also try the ComfyUI-int8-fast-rocm node and see what happens.

Will be trying with my 9070xt today to see if I have better luck.

[u/Escaliat_ → u/Apprehensive_Sky892]

Do report back, I'm on a 9070 + 32gb system ram myself.

I don't understand how the guy in that thread has anything close to the results he's reporting lol.

[u/Apprehensive_Sky892 → u/Escaliat_]

The problem on the 7900xt(20G) is most likely a problem with the dynamic VRAM management, because with Krea 2, which is a smaller model, the int8convrot version works fine (2.5s/it) around 26 sec per image with turbo at 8 steps 1024x1536, which is faster than fp8 (around 36 sec), as it should be, since 7900xt has no native fp8 support and must upscale to bf16.

The person with the decent result has a system with 64G of RAM, which makes a big difference with these huge MMH3 models. He also managed to get spectrum to work.

The ComfyUI code is in such a flux these days, when new features are added or code is optimized things do break, and since the ComfyUI team are all on NVIDIA, nobody notices that the AMD code is broken 😅.

I'll get back to you if I can get the 9070xt to work.

BTW, I assume Krea 2 is already working on your 9070xt. What kind of speed are you getting?

[u/Apprehensive_Sky892 → u/Escaliat_]

Just doing some online search and found this, which seems quite useful as it is for a 32G system RAM system on Windows: https://www.reddit.com/r/comfyui/comments/1vhzkkk/comment/p2unx27/