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Best GPU for Stable Diffusion in 2025

Generate AI art with SDXL, ComfyUI, and Automatic1111. Find the perfect GPU for your image generation workflow.

Best for SDXL

NVIDIA RTX 4070 Ti Super

16GB VRAM • 6-8 sec/image SDXL • Great for ControlNet

SDXL Generation Speed (512x512, 30 steps)

RTX 4090
2.5s
RTX 4080 Super
4.2s
RTX 4070 Ti Super
6.1s
RTX 4060 Ti 16GB
9.8s
RTX 3090
5.5s
RTX 3060 12GB
18s

Lower is better. Benchmarks using ComfyUI with default settings.

Recommended GPUs for Stable Diffusion

HIGHEND

NVIDIA RTX 4090

$1400
MSRP: $1599
24GB
VRAM
$58
$/GB VRAM
SDXLSD 1.5ControlNetTraining
Fastest Stable Diffusion generation

Pros

  • Fastest image generation
  • 24GB for large batches
  • Best for training

Cons

  • Overkill for casual use
  • High power draw

Buy Now

MIDRANGE

NVIDIA RTX 4070 Ti Super

$799
16GB
VRAM
$50
$/GB VRAM
SDXLSD 1.5ControlNet
Best value for serious SD users

Pros

  • Great for SDXL
  • Efficient
  • Good price

Cons

  • Slower than 4090
  • Less VRAM for training

Buy Now

BUDGET

NVIDIA RTX 4060 Ti 16GB

$499
16GB
VRAM
$31
$/GB VRAM
SDXLSD 1.5
Best budget option with enough VRAM for SDXL

Pros

  • 16GB VRAM at budget price
  • Very efficient
  • Good for SDXL

Cons

  • Slower than Ti Super
  • Narrow memory bus

Buy Now

VRAM Requirements by Use Case

Use CaseMinimumRecommended
SD 1.5 (512x512)4 GB8 GB
SDXL (1024x1024)8 GB12-16 GB
SDXL + ControlNet12 GB16 GB
Training LoRAs12 GB24 GB
Full Fine-tuning24 GB48 GB+

Frequently Asked Questions

Related Guides

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Check requirements

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