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FLUX Schnell Ultra-Fast

4-step generation with FLUX Schnell. Full quality in under 6 seconds on RTX 5080.

About this workflow

FLUX Schnell with 4-step distillation for rapid prototyping. CFG 1.0, Euler sampler, simple scheduler. Ideal for iterating prompts quickly before switching to Dev for final renders. Uses fp8 checkpoint for 12GB compatibility.

FLUXfastschnellprototype12GB

Required Model

flux1-schnell-fp8.safetensors

Place in: ComfyUI/models/checkpoints/

Benchmark (RTX 5080)

Gen Time

~6s on RTX 5080

Resolution

1024×1024

Hardware Profile

Settings adjust to your GPU tier

16GB Recommended — Specs

Resolution1024×1024

Steps25

CFG7

Samplerdpmpp_2m

Schedulerkarras

Flags--gpu-only

Full quality. Recommended tier for this workflow.

Export Package

✓ Real ComfyUI node graph JSON

✓ Hardware settings baked in

✓ Launch flags in metadata note

✓ Load directly in ComfyUI

// Hardware

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