Yes — with 18.6 GB to spare
Phi-4-mini 3.8B at Q4_K_M fits your GeForce RTX 5090 Laptop entirely on the GPU at 8K context, at an estimated 251 tokens per second. There is room for its full 128K window.
Fully on GPU
8K context
Q4_K_M · 2.2 GB
MIT
Released Feb 2025
MIT-licensed, dense, and unusually strong on instruction following for its size.
The VRAM budget
weights 2.2 GB
Weights 2.2 GB
KV cache @ 8K 1.00 GB
Runtime overhead 0.6 GB
Free 18.6 GB of 22.4 GB
Quantisation ladder
| Quant | Weights | Total @ 8K | Max context | Tok/s | Quality | Fit |
|---|---|---|---|---|---|---|
| F16 | 7.2 GB | 8.8 GB | 117K | 76 | Reference | Long context |
| Q8_0 | 3.8 GB | 5.4 GB | 128K | 143 | −0.1% ppl | Long context |
| Q6_K | 2.9 GB | 4.5 GB | 128K | 185 | −0.4% ppl | Long context |
| Q5_K_M | 2.5 GB | 4.1 GB | 128K | 214 | −0.8% ppl | Long context |
| Q4_K_M | 2.2 GB | 3.8 GB | 128K | 251 | −1.9% ppl | Recommended |
| Q3_K_M | 1.7 GB | 3.3 GB | 128K | 310 | −5.4% ppl | Long context |
| Q2_K | 1.5 GB | 3.1 GB | 128K | 362 | −15% ppl | Long context |
Quality is the published perplexity delta against f16 weights. Max context assumes an f16 KV cache; q8_0 roughly doubles it.
How to run it
$ ollama pull phi4-mini:3.8b $ OLLAMA_CONTEXT_LENGTH=8192 \ ollama run phi4-mini:3.8b
The default. One binary, a model registry, an OpenAI-compatible port. More on Ollama.
01Download is 2.2 GB. Keep it on an SSD — a first load off a spinning disk takes minutes.
02Close anything else holding VRAM. A browser with hardware acceleration can sit on 1–2 GB.
03There is room to go to the model's full 128K context on this card.