Stable Diffusion 3.5 Large on NVIDIA GeForce RTX 5090
NVIDIA GeForce RTX 5090 runs Stable Diffusion 3.5 Large excellently at FP16. This is a strong pairing.
Model Size
8.1B
Device VRAM
32 GB
Bandwidth
1792 GB/s
Quantizations Tested
1
Performance by Quantization
Each row shows Stable Diffusion 3.5 Large performance at a different quality level on NVIDIA GeForce RTX 5090.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| FP16 | — | 2500ms | ✓ Yes | Excellent | estimated |
Notes
FP16
1792 GB/s. 32GB fits FP16 with 19GB headroom. ~2.5s per image. Fastest SD 3.5 Large.
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 5090
NVIDIA GeForce RTX 5090 has 32 GB at 1792 GB/s. Street price: $2,199.
See all models NVIDIA GeForce RTX 5090 can run →Builds with NVIDIA GeForce RTX 5090
Source: Performance estimates based on model size and device bandwidth (2026-03-15)
Data last updated: 2026-03-15