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MiniMax H3 BF16: Compatible GPUs, VRAM and Download

Main model (diffusion) · BF16 · 66.28GB · updated 2026-09-18

Which GPUs can run it

736 × 416 · 5s: pick a smaller alternative

None — switch to a smaller quant or lower tier

1344 × 768 · 5s: pick a smaller alternative

None — switch to a smaller quant or lower tier

1344 × 768 · 15s: pick a smaller alternative

None — switch to a smaller quant or lower tier

“Workable” = estimated status ok or warn with 32GB RAM / fast-disk (warn means weight offloading and noticeably slower).

Download · HuggingFace →

→ Run the numbers for your RAM/budget in the calculator (this file pre-filled)

FAQ

How much VRAM does minimax_h3_ref2va_bf16.safetensors need?

The file is 66.28GB (Main model (diffusion)). Runtime VRAM also depends on resolution and duration; a 720p-class short clip typically needs roughly 40GB+ of free VRAM. Run the calculator for your exact card.

Where does this file go in ComfyUI?

diffusion_models (main model folder). Keep the filename as-is; refresh ComfyUI and select it in the matching loader.

How does it compare with other quantizations?

See sibling entries in the model library and the INT8/BF16 comparison article. Rule of thumb: 8GB → GGUF Q3/Q2; 12-16GB → pruned INT8 or W4A8; 24GB+ → full INT8 or NVFP4 (RTX 50).

Similar files: BF16 · INT8 · P- BF16 · P- INT8 · P- FP8 · INT8 · P- BF16 · P- INT8 · P- FP8 · P- W4A8

Related: Model library · INT8/BF16 comparison · 8GB VRAM setups