Can the Arc B580 12 GB run SDXL 1.0?
Yes. 16-bit fits on the Arc B580 12 GB with 4.9 GB to spare.
Take 16-bit (6.9 GB). In use it comes to about 7.1 GB, with 4.9 GB left over on 12 GB.
01What to download
| Part | File | Folder | Size | |
|---|---|---|---|---|
| Checkpoint | sd_xl_base_1.0.safetensors 16-bit · stabilityai/stable-diffusion-xl-base-1.0 | models/checkpoints | 6.9 GB | Download → |
| Total download · keep about the same free on disk | 6.9 GB | |||
One file: the checkpoint already contains the text encoders and the VAE. Sizes from Hugging Face, 2026-10-01.
02Every SDXL file on 12 GB
| File | Size | Needed | On this card | Quality | Download |
|---|---|---|---|---|---|
| 16-bit ← SAFETENSORS · stabilityai | 6.9 GB | 7.1 GB | fits · 4.9 GB spare | the original weights | Hugging Face → |
“Needed” adds 1.2 GB of working memory for SDXL and a 0.8 GB reserve. Sizes 2026-10-01. The 6.94 GB checkpoint also holds the two text encoders and the VAE. During sampling only the UNet (about 5.1 GB at 16-bit, 2.6B parameters) has to sit in VRAM, so that is the figure used for the 16-bit file.
03The text encoder
The text encoder is inside the checkpoint, so there is nothing extra to download.
04Measured and reported results
| Label | Setup | Result | Peak VRAM | Date | Source |
|---|---|---|---|---|---|
| reported | sd_xl_base_1.0 · 1024x1024 · 20 steps “100%|██| 20/20 [00:05<00:00, 3.96it/s]” ComfyUI 'GPU Benchmark' thread: default workflow, SDXL 1.0 base, 1024x1024, seed 1, second run; Intel B580 Steel Legend OC 12 GB | 3.96 it/s | — | 2025-05-12 | github.com → |
Other people's numbers are copied as published, with a link. Send yours.
05About the Arc B580 12 GB
Intel Arc GPUs run ComfyUI through PyTorch's native XPU support on Windows 11 and Linux. Memory works the same as on NVIDIA, so the fit verdicts apply. FP8 files save memory but give no speed-up, and some custom nodes are NVIDIA-only.
12 GB GDDR6 · 192-bit · 456 GB/s · Battlemage. Everything that runs on it →
06Questions
How much VRAM does SDXL need?
Around 7.1 GB with the smallest file (16-bit).
Which SDXL file should I download for the Arc B580 12 GB?
16-bit (6.9 GB) from stabilityai/stable-diffusion-xl-base-1.0.
How much do I need to download for SDXL on the Arc B580 12 GB?
6.9 GB: sd_xl_base_1.0.safetensors.