AINewsnow

MiniMax H3 Upscaling Tested on Single RTX 4090

This story is from 2026-08-29. It is preserved in the archive; the latest stories are on the live feed.

Independent tests show MiniMax H3 native 720p to 1440p second sampling on one RTX 4090, with times of 112s, 223s, and 334s for 5s, 10s, and 15s clips, using auto-scheduled sparse attention.

Read the full story at r/comfyui ↗

Timeline · 2 reports

  1. 2026-08-29 17:55 · r/StableDiffusion
    MiniMax H3 native 720p→1440p on one RTX 4090: 112s / 223s / 334s with auto-scheduled sparse attention
  2. 2026-08-29 17:34 · r/comfyui
    MiniMax H3 native 720p→1440p second sampling on one RTX 4090: 112s / 223s / 334s for 5s / 10s / 15s clips

More stories

  1. A quick Minimax H3 news round-up - 18th September 2026 — r/comfyui
  2. Follow-up: making a quieter TNG scene with MiniMax H3 in ComfyUI, and why I had to regenerate the whole thing at 1MP — r/StableDiffusion
  3. H3 Minimax swap — r/comfyui
  4. Fix for the MiniMax H3 VAE grid / tile-seam artifact in ComfyUI Core — usable now via PR #16422 — r/StableDiffusion
  5. Meridian Camera H3 — by Bruxos do VFX — r/comfyui
  6. SPEEDing up MiniMax-H3 without retraining - V2, now with more samplers and considerably less jank — r/comfyui
  7. I Built Custom Nodes for LONG Seamless MiniMax-H3 Videos! [FREE Nodes + ... — r/StableDiffusion
  8. Minimax H3 Faceswap For VFX — r/comfyui

Get the daily brief of stories like this at 6:30 every morning →