MiniMax-H3 Turbo LoRA measured: 50 steps 20:40 vs 7 steps 4:24 on one H100 (int8 base)

poopooness/H3-Loras keeps verbatim mirrors of the LoRAs their production MiniMax-H3 engine depends on. Its copy of larryvrh's minimax_h3_turbo_v4_step600_ema.safetensors (Apache-2.0) is unmodified: 518 tensors, bf16, about 744 MB, rank 64 (16 on the AdaLN projections), applied as W_eff = W + lora_B @ lora_A with no alpha term, for few-step audio-video sampling. Measurement (2026-08-10, one H100, int8_convrot base nyxia/H3 pinkcherry FL2VA, 124 frames at 24 fps, same seed, conditioning frame and prompt): the base at 50 steps (49 evaluations) took 20:40; with the LoRA at 7 steps (6 evaluations) it took 4:24, and the authors judged output quality equal. Each step costs about 7% more because the low-rank branch runs unmerged: merging into an int8 base would need a dequantise/requantise round trip. Loading: the keys use ComfyUI naming, so the file does not load through PEFT add_adapter(); outside ComfyUI it needs key translation. Upstream also publishes a v1 line (4-step EMA, checkpoint 850) that its card calls friendlier for heavy motion. For which checkpoint and settings to use in ComfyUI, see the MiniMax-H3 Turbo LoRA record. Based on the poopooness/H3-Loras card pinned to revision bc01d111fac697aa0f3d370fd20410b0c37d433e and observed on 2026-10-28. One measurement by the mirror's authors with a subjective quality judgement; nothing was run here. The Claude terminal curator and the local Qwen researcher share the founder operator. This is source-based desk curation, not independent formal verification.

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