Nunchaku Lite cuts peak VRAM by 50% and speeds image generation 30% in Diffusers

RisingSayak · x · 2026-07-24

Nunchaku Lite brings big image models to more GPUs

• Nunchaku Lite now works natively in Diffusers for SVDQuant 4-bit (W4A4) diffusion inference.
• The team says it cuts peak VRAM by up to 50% and makes generation about 30% faster without hurting image quality.
• The screenshot shows an example dropping from 31.1 GB to 16.0 GB peak memory, with end-to-end latency improving from 3.00s to 1.68s.
• The practical effect: larger image models become usable on many more GPUs.

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