Microsoft on NVIDIA Ampere
Can I run Phi-4 14B on an RTX 3080 10GB?
Not at Q4_K_M — it needs 10.8 GB against 8.6 GB available. Drop to IQ3_XXS and it fits, at about 74.1 tokens per second.
Won't fit
10.8 GB of 8.6 GB · 125%011 GB
Weights
8.4 GB
KV cache
1.6 GB
Runtime overhead
0.8 GB
Over the limit
2.2 GB
Short by 2.2 GB. You can run it with 29 of 40 layers on the RTX 3080 10GB and the rest in system RAM, at roughly 12.9 tok/s — usable for batch work, painful for chat. A smaller quantisation or a shorter context is usually the better trade.
Generation12.9tok/s
Prompt processing857tok/s
Max context0tokens
KV per 1K tokens0GB
Every quantisation of Phi-4 14B on a RTX 3080 10GB
Highlighted row is the highest quality that still fits at 8K context.
| Quantisation | bpw | Weights | Total | Verdict | Max ctx | tok/s |
|---|---|---|---|---|---|---|
| FP16 / BF16 | 16.00 | 27.4 GB | 29.8 GB | Won't fit | — | 1.79 |
| INT8 / W8A8 | 8.50 | 14.3 GB | 16.7 GB | Won't fit | — | 4.33 |
| Q8_0 (GGUF) | 8.50 | 14.3 GB | 16.7 GB | Won't fit | — | 4.33 |
| FP8 (E4M3) | 8.00 | 13.7 GB | 16.1 GB | Won't fit | — | 4.69 |
| Q6_K | 6.56 | 11.2 GB | 13.6 GB | Won't fit | — | 6.70 |
| Q5_K_M | 5.67 | 9.7 GB | 12.1 GB | Won't fit | — | 8.90 |
| Q5_K_S | 5.52 | 9.4 GB | 11.8 GB | Won't fit | — | 9.63 |
| AWQ 4-bit | 4.25 | 8.7 GB | 11.1 GB | Won't fit | — | 11.7 |
| GPTQ 4-bit | 4.25 | 8.7 GB | 11.1 GB | Won't fit | — | 11.7 |
| MXFP4 | 4.25 | 8.7 GB | 11.1 GB | Won't fit | — | 11.7 |
| Q4_K_M | 4.85 | 8.4 GB | 10.8 GB | Won't fit | — | 12.9 |
| Q4_K_S | 4.58 | 7.9 GB | 10.3 GB | Won't fit | — | 15.7 |
| Q4_0 | 4.55 | 7.9 GB | 10.3 GB | Won't fit | — | 15.8 |
| IQ4_XS | 4.25 | 7.4 GB | 9.8 GB | Won't fit | 2K | 19.8 |
| Q3_K_M | 3.91 | 6.9 GB | 9.3 GB | Won't fit | 5K | 29.5 |
| IQ3_M | 3.70 | 6.5 GB | 8.9 GB | Won't fit | 6K | 35.4 |
| IQ3_XXS | 3.06 | 5.5 GB | 7.9 GB | Fits, but tight | 11K | 74.1 |
| Q2_K | 2.63 | 4.8 GB | 7.2 GB | Runs comfortably | 15K | 82.9 |
| IQ2_XXS | 2.06 | 3.9 GB | 6.3 GB | Runs comfortably | 16K | 98.4 |
| IQ1_M | 1.75 | 3.4 GB | 5.8 GB | Runs comfortably | 16K | 110 |