4-bit plus DiffSynth: an 8GB-VRAM route — MiniMax H3 tutorial
Run H3 on smaller GPUs through 4-bit quantization and VRAM-adaptive inference.
Audience: Users with 8GB VRAM or those testing a quantized H3 path on Mac.
Hardware: The source reports an 8GB minimum; verify actual speed and supported modes.
Prerequisites
- DiffSynth-Studio
- Matching 4-bit H3 weights
- Enough system memory and storage
Steps
- Confirm the current 4-bit model and DiffSynth version from the source.
- Enable VRAM-adaptive inference for the available memory.
- Start with a short baseline, then test resolution and modes gradually.
Caveats
- Running in low VRAM does not imply speed, and quantized quality differs from native weights.
View original source · ModelScope · 2026-08-23