Stable Diffusion 3.5 Large on Apple M4 Pro (24GB Unified)
Apple M4 Pro (24GB Unified) can run Stable Diffusion 3.5 Large at FP16, though performance is acceptable. Consider a higher-end GPU for better results.
Model Size
8.1B
Device VRAM
24 GB
Bandwidth
273 GB/s
Quantizations Tested
1
Performance by Quantization
Each row shows Stable Diffusion 3.5 Large performance at a different quality level on Apple M4 Pro (24GB Unified).
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| FP16 | — | 20000ms | ✓ Yes | Acceptable | estimated |
Notes
FP16
Slow due to limited bandwidth (273 GB/s) but functional. ~20s per image.
About Stable Diffusion 3.5 Large
Stable Diffusion 3.5 Large (8.1B) is a image gen model. Latest Stable Diffusion architecture with significantly improved prompt adherence, typography, and composition over SDXL. Higher VRAM requirement (12GB+ at FP16) but produces noticeably better images. The current standard for local image generation.
View all Stable Diffusion 3.5 Large hardware options →About Apple M4 Pro (24GB Unified)
Apple M4 Pro (24GB Unified) has 24 GB at 273 GB/s. Available in MacBook Pro 14", MacBook Pro 16", Mac Mini.
See all models Apple M4 Pro (24GB Unified) can run →Source: MLX performance estimates based on device bandwidth (2026-03-15)
Data last updated: 2026-03-15