Stable Diffusion 3 Medium on NVIDIA RTX 4090 Laptop (150-175W)
RTX 4090 Laptop (150-175W) runs Stable Diffusion 3 Medium at FP16. Usable on 16 GB VRAM — see full quantization options below.
Model Size
2B
Device VRAM
16 GB
Bandwidth
512 GB/s
Quantization
FP16
Performance by Quantization
OwnRig currently has one published compatibility entry for Stable Diffusion 3 Medium on NVIDIA RTX 4090 Laptop (150-175W) at FP16. This is the best supported pairing we can stand behind today.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| FP16 | – | – | ✓ Yes | Acceptable | estimated |
Notes
FP16
Sustained post-thermal-throttle performance. TDP-capped laptop variant.
About Stable Diffusion 3 Medium
Stable Diffusion 3 Medium (2B) is a image gen model. Stability AI's SD3 medium model for high-quality image generation.
View all Stable Diffusion 3 Medium hardware options →About NVIDIA RTX 4090 Laptop (150-175W)
NVIDIA RTX 4090 Laptop (150-175W) has 16 GB at 512 GB/s. Street price: $0.
See all models NVIDIA RTX 4090 Laptop (150-175W) can run →Estimate method: Community laptop benchmarks and thermal throttle reports. Reference hardware source: reddit.com (2026-03-14)
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.