Minimax-H3 x3 Upscaling Workflows: Pixel vs. Latent vs. Context Windows
Support_Marmoset · reddit · 2026-08-25
The author shares test results and workflows for x3 upscaling using the Minimax-H3 model, comparing three main approaches:
- Pixel Space Workflow: Updated to support dialogue scenes.
- Latent Space Workflow: Developed by LBH-123-AI, noted for high quality.
- Context Windows Workflow (Author's pick): Supports 2MP resolution and longer videos.
The post provides downloadable ComfyUI workflow JSONs, required Custom Nodes, LoRA resources, and environment setup notes (CUDA 130+ required). It also links to official prompting guides and experimental W4a8 models.
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