Originally Posted: <a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/z_image_turbo">https://huggingface.co/Comfy-Org/z_image_turbo</a><h3 id="z-image-turbo-nvfp4-the-speed-of-light-meets-high-fidelity-realism">🚀 Z-Image Turbo [NVFP4] – The Speed of Light Meets High-Fidelity Realism</h3>Welcome to the next generation of efficiency. This is a specialized quantization of Z-Image Turbo using the cutting-edge NVFP4 (4-bit Floating Point) format. Optimized specifically for NVIDIA Blackwell (RTX 50-series) architecture, this model delivers unmatched inference speeds without sacrificing the photorealistic soul of the original weights.Why NVFP4?Unlike standard 4-bit quantizations, NVFP4 utilizes a dual-level scaling strategy (FP8 micro-blocks + FP32 tensor scaling). This minimizes quantization errors, preserving the fine textures, skin details, and lighting accuracy that define high-end diffusion models, all while slashing VRAM usage.<h3 id="key-features">✨ Key Features</h3><ul><li>Insane Speed: Generate 1.5MP to 2MP images in seconds.</li><li>VRAM Efficient: Extremely lightweight footprint (approx. 4.2GB), making it accessible for GPUs with lower memory while flying on high-end cards.</li><li>Zero-CFG Distilled: Designed for 8-10 step generations with no CFG overhead.</li><li>Bilingual Mastery: Exceptional at rendering both English and Chinese text within the image, also Spanish</li><li>Raw Realism: Maintains the "organic" look—perfect for those who hate the "AI plastic" aesthetic.</li></ul><h3 id="recommended-settings">🛠 Recommended Settings</h3><ul><li>Steps: 8 to 12 (10 is the sweet spot).</li><li>CFG Scale: 1.0 (The model is distilled; higher values are not needed).</li><li>Sampler: Euler a &amp; bong tangent.</li><li>Resolution: Optimized for 1024x1024 and 1536x1536.</li><li>Architecture: Works best in environments supporting CUDA 13 and Forge UI.</li></ul>Pro Tip: For the best results, use descriptive, natural language prompts. This model excels at "unposed" photography, cinematic lighting, and complex material textures like weathered skin or textile weaves.

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