Stable Diffusion 3.5 Large on NVIDIA GeForce RTX 4070 Ti 12GB
Yes — RTX 4070 Ti 12GB handles Stable Diffusion 3.5 Large well at Q8_0. Solid daily-driver performance on 12 GB VRAM.
Model Size
8.1B
Device VRAM
12 GB
Bandwidth
504 GB/s
Quantization
Q8_0
Performance by Quantization
OwnRig currently has one published compatibility entry for Stable Diffusion 3.5 Large on NVIDIA GeForce RTX 4070 Ti 12GB at Q8_0. This is the best supported pairing we can stand behind today.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| Q8_0 | – | – | ✓ Yes | Good | estimated |
Notes
Q8_0
Q8_0 9GB fits with headroom. ~8-12 sec per 1024x1024 image. FP16 12.5GB doesn't fit.
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 NVIDIA GeForce RTX 4070 Ti 12GB
NVIDIA GeForce RTX 4070 Ti 12GB has 12 GB at 504 GB/s. Street price: $749.
See all models NVIDIA GeForce RTX 4070 Ti 12GB can run →Estimate method: Q8_0 9GB fits with 3GB headroom. Reference hardware source: github.com (2026-03-15)
Performance varies by driver version, inference engine, quantization method, context length, and system configuration. Figures shown are estimates based on community benchmarks and may not reflect your exact setup. Product names are trademarks of their respective owners. OwnRig is independent and not affiliated with any hardware or AI model provider.