FLUX.1 & ComfyUI Prompt Architect & VRAM Calculator

FREE WEB UTILITY FOR FLUX.1 & COMFYUI

FLUX.1 Prompt Architect & VRAM Calculator

Design production-grade prompts, calculate exact GPU VRAM footprint (GGUF, FP8, FP16), and eliminate Out-Of-Memory (OOM) crashes in ComfyUI.

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Prompt Architect

Core Subject / Concept

Visual Style Cinematic Photography (Raw 35mm) Editorial Fashion Studio Dark Fantasy (Oil Painting) Anime / High-End Cel Shading 3D Octane / Unreal Engine 5 Sci-Fi Concept Art

Lighting & Atmosphere Golden Hour (Warm Natural) Dramatic Rim Light & Volumetric Rays Cyberpunk Neon & Bioluminescent Studio Softbox (Clean Diffused) Moody Candlelight / Chiaroscuro

Camera & Lens Setup 50mm f/1.2 (Shallow Depth of Field) Wide Angle 24mm (Epic Scale) 85mm Telephoto (Crisp Portrait) Macro 100mm (Microscopic Details)

Target Model Preset FLUX.1 [dev] (Guidance 3.5) FLUX.1 [schnell] (Guidance 1.0, 4-Step) Wan 2.2 Video Diffusion (T2V / I2V) Stable Diffusion XL (Base + Refiner)

Synthesized Prompt (FLUX-Optimized)

Click "Generate & Optimize Prompt" or type above...

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VRAM & Hardware Engine

Model Weight Precision / Quantization FP16 (Full Precision) - ~23.8 GB Weights FP8 (Standard ComfyUI FP8 e4m3fn) - ~11.9 GB Weights GGUF Q8_0 (High Quality GGUF) - ~12.8 GB Weights GGUF Q5_K_M (Sweet Spot 8GB-12GB GPUs) - ~8.6 GB Weights GGUF Q4_K_S (Extreme Budget 6GB VRAM) - ~6.9 GB Weights

Resolution & Aspect Ratio 1:1 Square (1024 × 1024) - Standard 3:4 Portrait (896 × 1152) - Character 9:16 Story / Mobile (768 × 1344) 16:9 Landscape / Desktop (1344 × 768) 21:9 Ultra-Wide Cinematic (1536 × 640)

Your GPU VRAM Capacity 6 GB VRAM (RTX 3060 Laptop, GTX 1660) 8 GB VRAM (RTX 3060, RTX 3070, RTX 4060) 12 GB VRAM (RTX 3060 12GB, RTX 4070) 16 GB VRAM (RTX 4080, RTX 4070 Ti Super) 24 GB VRAM (RTX 3090, RTX 4090)

Model Weights VRAM: 11.9 GB

KV Cache & Context VRAM: 2.2 GB

Estimated Peak VRAM: 14.1 GB

Evaluating hardware compatibility...

Recommended ComfyUI Settings for this setup:

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