RTX 3080 Benchmark: Spectrum Nodes Significantly Accelerate MiniMax H3 Video Generation
Valuable_Issue_ · reddit · 2026-08-04
A developer benchmarked the MiniMax H3 model on an RTX 3080 (10GB VRAM) to compare performance with and without Spectrum nodes. Using quantized models (int8 and nvfp4awq) and 20 steps of Euler Simple sampling, the Spectrum nodes significantly accelerated video generation.
At 1MP resolution, generation took roughly 12m50s with Spectrum enabled, compared to 18m35s without it. At 0.5MP, time dropped from 393s to 261s. The author also noted that Qwen3VL's text encoding is noticeably faster than Gemma 12B's.
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