Running MiniMax H3 on 12GB VRAM: RTX 5090 Generates 1080p Video in 13 Mins
Fun_Firefighter_7785 · reddit · 2026-08-09
Using Kijai's experimental w4a8 quantized checkpoint (12GB) combined with a Turbo LoRA, a developer successfully ran the MiniMax H3 model locally in the Wan2GP environment.
Tests show that on an RTX 5090, it takes only about 13 minutes to generate a 12-second 1080p high-definition video. The prompts were cleverly generated using the free Gemini model available via the Google search bar.
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