Phi-3 Medium 14B Instruct on NVIDIA GeForce RTX 4070 Ti 12GB
NVIDIA GeForce RTX 4070 Ti 12GB can run Phi-3 Medium 14B Instruct at 35 tok/s at Q3_K_M, though performance is acceptable. Consider a higher-end GPU for better results.
Model Size
14B
Device VRAM
12 GB
Bandwidth
504 GB/s
Quantizations Tested
1
Performance by Quantization
Each row shows Phi-3 Medium 14B Instruct performance at a different quality level on NVIDIA GeForce RTX 4070 Ti 12GB.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| Q3_K_M | 35 tok/s | 180ms | ✓ Yes | Acceptable | estimated |
Notes
Q3_K_M
Q3_K_M fits. Q4 would need ~10GB — tight. Marginal but usable.
About Phi-3 Medium 14B Instruct
Phi-3 Medium 14B Instruct (14B) is a chat, coding, reasoning, multi-purpose model. 14B model with strong reasoning and coding performance. Fits comfortably on 16GB GPUs at Q4 and excels at structured output tasks. MIT license makes it attractive for commercial use.
View all Phi-3 Medium 14B Instruct hardware options →About NVIDIA GeForce RTX 4070 Ti 12GB
NVIDIA GeForce RTX 4070 Ti 12GB has 12 GB at 504 GB/s. Street price: $749.
See all models NVIDIA GeForce RTX 4070 Ti 12GB can run →Source: 14B model. Q3_K_M fits with headroom (2026-03-15)
Data last updated: 2026-03-01