Can I Run Phi-4 on a NVIDIA RTX 3080 12GB?
Yes
Runs at Q5_K_M — good quality with reasonable headroom.
Model size
14.0B
GPU memory
12.0GB
Smallest quant
Q4_K_M
Best fit
Q5_K_M
2 quantizations fit your 12.0GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| Q5_K_MBEST | 10.9 GB | 12.4 GB | 9.9 GB | +1.1 GB |
| Q4_K_M | 9.5 GB | 11.0 GB | 8.5 GB | +2.5 GB |
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Full model details
Phi-4 →
All quant variants, benchmark scores, and use-case tags.
Best models for this GPU
NVIDIA RTX 3080 12GB →
Top-ranked open-source models that fit in 12.0GB.
FAQ
Can the NVIDIA RTX 3080 12GB run Phi-4?
Yes. The NVIDIA RTX 3080 12GB's 12.0GB of VRAM is enough to run Phi-4 at Q5_K_M quantization (10.9GB required).
What's the best quantization to use?
Q5_K_M is the highest-precision quantization that fits in your 12.0GB. It uses about 10.9GB of memory and 12.4GB recommended for comfortable inference.
What if I need more headroom for context length?
KV cache memory grows with context length. The numbers above assume a baseline 2K-4K context. For long-context use (32K+), add another 2-6GB depending on the model architecture.