Stable Diffusion 3.5 Large on NVIDIA GeForce RTX 5080
NVIDIA GeForce RTX 5080 runs Stable Diffusion 3.5 Large excellently at FP16. This is a strong pairing.
Model Size
8.1B
Device VRAM
16 GB
Bandwidth
960 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 5080.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| FP16 | — | 4500ms | ✓ Yes | Excellent | estimated |
Notes
FP16
960 GB/s. 16GB fits FP16. ~4.5s 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 NVIDIA GeForce RTX 5080
NVIDIA GeForce RTX 5080 has 16 GB at 960 GB/s. Street price: $1,099.
See all models NVIDIA GeForce RTX 5080 can run →Source: Performance estimates based on model size and device bandwidth (2026-03-15)
Data last updated: 2026-03-15