Running MiniMax H3 Locally on RTX 4080: SpongeBob Test and Prompt Breakdown
FormRevolutionary410 · reddit · 2026-08-08
A user successfully ran the MiniMax H3 video model locally on an RTX 4080 (16GB) via ComfyUI, generating multiple 5-second 2D cartoon clips at around 195 seconds per clip.
Deployment Specs: Utilized int8 quantized DiT and Qwen3-VL-32B text encoder, combined with a Turbo LoRA for a 6-step generation at 1344×768 resolution.
Prompt Engineering: The author demonstrated highly precise control writing, breaking down actions second-by-second and strictly defining the boundaries of reference images (e.g., using them only for scene or character identity, explicitly overriding expressions and poses). The prompt also detailed camera movements and audio cues.
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