FLUX.1 [dev] VRAM Calculator

Official FLUX.1 [dev] model by Black Forest Labs. Calculate hardware limits, context VRAM usage, and local inference requirements.

Diffusion / Video ModelDeveloper: Black Forest Labs

Recommended GPU: RTX 3090 24GB / RTX 4080 16GB

Your GPU VRAM12 GB

DiT Backbone Precision

Output Resolution / Frames

CPU Offload (ComfyUI / LowVRAM)

Move text encoders & VAE to system RAM

Estimated Total VRAM

13.2GB

VRAM Usage Ratio100% (13.2 / 12 GB)

Memory Allocation Breakdown

DiT Backbone4.2 GB

Encoders & VAE5.3 GB

Latent Activation2.2 GB

CUDA Runtime1.5 GB

⚠️ CUDA Out of Memory Warning

+1.2 GB exceeds your GPU limit. This configuration will trigger CUDA OOM or heavy memory swapping.