Phi-4 14B on NVIDIA GeForce RTX 4090
NVIDIA GeForce RTX 4090 runs Phi-4 14B excellently at 58 tok/s at Q5_K_M. This is a strong pairing.
Model Size
14.7B
Device VRAM
24 GB
Bandwidth
1008 GB/s
Quantizations Tested
1
Performance by Quantization
Each row shows Phi-4 14B performance at a different quality level on NVIDIA GeForce RTX 4090.
| Quantization | Speed | TTFT | Fits in VRAM | Rating | Confidence |
|---|---|---|---|---|---|
| Q5_K_M | 58 tok/s | 115ms | ✓ Yes | Excellent | estimated |
Notes
Q5_K_M
Excellent reasoning speed. Q5 quality with plenty of headroom.
About Phi-4 14B
Phi-4 14B (14.7B) is a reasoning, coding, chat model. Microsoft's efficient reasoning and coding model with strong performance per parameter.
View all Phi-4 14B hardware options →About NVIDIA GeForce RTX 4090
NVIDIA GeForce RTX 4090 has 24 GB at 1008 GB/s. Street price: $1,799.
See all models NVIDIA GeForce RTX 4090 can run →Builds with NVIDIA GeForce RTX 4090
Source: Community benchmarks and estimated performance (2026-03-01)
Data last updated: 2026-03-15