Best GPU for Stable Diffusion — United Kingdom
The best GPU for Stable Diffusion right now is the GeForce RTX 5090, balancing performance, its 32GB of VRAM and current market price.
AI image generation lives and dies by VRAM — larger buffers unlock bigger resolutions and models — with CUDA-accelerated NVIDIA cards enjoying the best software support.
New
Best fit for Stable Diffusion among in-stock new GPUs, ranked on the specs that matter for this workload.
GeForce RTX 509032 GB GDDR7 · Performance 100/100
£3,449
GPU Name | Price |
|---|---|
GeForce RTX 5090NVIDIA | |
GeForce RTX 4090NVIDIA | |
GeForce RTX 3090 TiNVIDIA | |
GeForce RTX 3090NVIDIA |
Used
Best fit for Stable Diffusion among in-stock used or refurbished GPUs, ranked on the specs that matter for this workload.
GeForce RTX 3090 Ti24 GB GDDR6X · Performance 44/100
£1,467
GPU Name | Price |
|---|---|
GeForce RTX 5070 TiNVIDIA | |
GeForce RTX 3090 TiNVIDIA | |
GeForce RTX 4070 SUPERNVIDIA | |
GeForce RTX 3090NVIDIA |
Frequently asked questions
What is the best GPU for Stable Diffusion?
Right now the GeForce RTX 5090 is our top pick for Stable Diffusion, with 32GB of VRAM. The full ranking above updates live from current market prices, so the best value can shift as deals appear.
How much VRAM do I need for Stable Diffusion?
For Stable Diffusion we recommend at least 12GB of VRAM. Cards below that can work but will force compromises, so every GPU ranked above meets that floor.
Is NVIDIA or AMD better for Stable Diffusion?
For Stable Diffusion, NVIDIA cards generally have the software edge thanks to broader CUDA/OptiX support, so they’re weighted slightly higher in our ranking — but a well-specced competitor can still be the better value.
Should I buy a new or used GPU for Stable Diffusion?
A used card can stretch your budget for Stable Diffusion, and we list the best used picks separately above. Just weigh the lower price against the lack of warranty and unknown wear.