ComfyUI Node Test: Sage Attention Significantly Accelerates MiniMax H3
ConstructionOdd7870 · reddit · 2026-08-03
To address the computational demands of running the MiniMax H3 video generation model locally, developers have found that using the Patch Sage Attention KJ node in ComfyUI can effectively boost inference speeds.
Test data shows that routing the model through this attention mechanism optimization node resulted in a significant speedup, changing the processing rate from 20 it/s to 14 it/s (Note: The original post phrasing might be ambiguous regarding iterations vs. seconds, but the author explicitly claims a major acceleration). This approach provides a practical performance optimization for local high-res video generation workflows.
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