How much GPU VRAM is needed for Stable Diffusion XL Base 1.0 image generation?

Running Stable Diffusion XL Base 1.0 locally at standard 1024x1024 resolution requires ~12GB to 16GB of VRAM depending on the precision variant (FP8 vs FP16) and text encoder backbone.

Is Stable Diffusion XL Base 1.0 open source and free to self-host?

Yes, Stable Diffusion XL Base 1.0 provides open weights that can be self-hosted locally on compatible hardware with $0 per-image token fees.

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Image ModelOpen Source

Stable Diffusion XL Base 1.0 VRAM Requirements

Developed by Stability AI

Determine the local VRAM and system RAM requirements to run the Stable Diffusion XL Base 1.0 image generation model. Calculate components footprint, check VRAM margins, and optimize configurations for local generation speed.

Hardware Configuration

Adjust settings to check compatibility with your system in real time.

GPU Dedicated VRAM

GB VRAM

Available: 14.50 GB

System Host RAM

GB RAM

Available: 29.00 GB

CPU Offloading

Compatibility Verdict

Fits in GPU VRAM

This model's configuration fits fully in your VRAM. You will experience peak speed and performance.

Requires 9.45 GB total memory (weights: 6.94 GB, overhead: 2.51 GB).

Memory Margin+6.55 GB

Stable Diffusion XL Base 1.0 Precision Variants

Stable Diffusion XL Base 1.0 Component VRAM Breakdown

unet5.14 GB

text encoder0.25 GB

text encoder_21.39 GB

vae0.17 GB

Activation Overhead1.51 GB

Hardware Overhead1.00 GB

Total Active VRAM Required9.45 GB

How to Setup and Run Stable Diffusion XL Base 1.0 Locally

Download Weights from Hugging Face

Open-source image model weights are hosted on Hugging Face. You will need to download the model files (safetensors or GGUF variants) and place them in your UI's model folder.

Hugging Face Repository

Setup inside ComfyUI or WebUI

Most image models require a generation framework:

ComfyUI (Recommended): Put the UNet/Transformer weight files inside `ComfyUI/models/checkpoints/` or `ComfyUI/models/unet/` and the VAE inside `ComfyUI/models/vae/`.
Stable Diffusion WebUI (Forge/re-forge): Put checkpoint files inside `webui/models/Stable-diffusion/`.

Model Specs

DeveloperStability AI
AvailabilityLocal-Only
Official SiteVisit site

Key Strengths

realismprompt adherenceeditingoutput qualitycharacter consistencytext rendering

Commercial API Pricing

Commercial API costs $0.0030 per generated image.

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