What Can a 12GB GPU Run? (RTX 3060 & 4070 Local AI Guide)
A lot more than most people think. A 12GB card like the RTX 3060 comfortably runs 7B–13B chat models and most Stable Diffusion — a genuinely capable local-AI setup for cheap.
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What fits in 12GB
VRAM decides everything. Here's roughly how much of your 12GB common workloads use (at Q4, short context):
MEMORY USED OF 12GB
Green = fits comfortably. Gold/full = needs offload to system RAM (slower).
The verdict for a 12GB card
- Chat / assistants: 7B runs fast; 13B runs well. Great for daily use.
- Image generation: Stable Diffusion 1.5 and most SDXL workflows fit.
- Coding models: 7B–13B code models are very usable.
- Big models (30B+): possible with offload, but slow — better to size down or rent cloud.
The card: the RTX 3060 12GB is the classic 12GB value pick; a RTX 4070 12GB adds speed. Affiliate links; support the tool at no cost to you.
See the exact models, tokens/sec, and quants for a 12GB card.
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Want to go bigger? Read Best Budget GPUs for Local AI or 3060 vs 4060 vs 3090.