Local MiniMax H3 INT8 on RTX 5070 Ti: Generates 480p Video in 160s
Fun_Walk_4965 · reddit · 2026-08-04
A developer successfully ran the quantized MiniMax H3 INT8 model locally in ComfyUI using an RTX 5070 Ti (32GB RAM + 64GB virtual memory).
- Generation Time: It took about 160 seconds to generate a 5-second 480p text-to-video clip, and 560 seconds for 720p.
- Quality: The output exceeded expectations for a local quantized model. The author subjectively rated it at 40% of Seedance 2's quality (an uneven comparison).
- Main Weakness: Poor action continuity in multi-shot scenes, causing action states to reset or move backwards.
- Hardware Barrier: The test suggests it might be possible to run on a 12GB RTX 3060, though this needs further confirmation.
Related event: MiniMax H3 Local Deployment Tested on Consumer GPUs(6 posts)→
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