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MiniMax H3 Ref2Vid (int8): 6,294 s/step on RTX 3090 (24 GB) + 48 GB RAM — normal with 8 images + 15 s reference video?

Hi everyone! Using Minimax H3 for the first time: I started off with the default template in ComfyUI and turned on "Enable Lighting LoRA" (using the turbo 4 step ref2v). I also did --use-sage-attention. I'm trying to generate a 15s video at 0.9MP with 8 reference images (1024x680 each) and a roughl…

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Timeline · 2 reports

  1. 2026-09-29 00:35 · r/StableDiffusion
    What benefits will I notice when upgrading from 32 GB to 48 GB of RAM? I use comfy and minimax, LTX etc
  2. 2026-09-27 22:21 · r/StableDiffusion
    MiniMax H3 Ref2Vid (int8): 6,294 s/step on RTX 3090 (24 GB) + 48 GB RAM — normal with 8 images + 15 s reference video?

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