15-Second MiniMax H3 Video Takes 8 Minutes on an L40S — Can an RTX 5090 Do It in One?
Rich_Manufacturer193 · reddit · 2026-10-01
The author shares first-hand numbers for local MiniMax H3 text-to-video with native audio: RunPod L40S 48GB, ComfyUI, LightX2V MiniMax H3 Turbo 4-step v1.2, 1184x672 at 0.8MP, 15s/24fps, video shift 6 / audio shift 3, Euler sampler—about 8 minutes per clip. They ask whether an RTX 5090 (32GB) could hit 1 minute for the same spec, open to FP8, offloading, or LightX2V's own inference framework, aiming to cut cost per clip without quality loss.
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