Phi 3 Medium 14B needs ~13.7 GB VRAM. Intel Arc B580 12GB has 12.0 GB. With Q4_K_M quantization, expect ~16 tok/s.
Operating mode
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
1.7 GB over capacity — needs offload or smaller quantization
Fit status
Very compromised (needs ~1.1 GB host RAM)
Decode
16.1 tok/s
TTFT
12025 ms
Safe context
7K
Memory
13.7 GB / 12.0 GB
Offload
10%
It fits through host-memory offload, and offload is the main reason performance drops.
CPU or host-memory offload is active
About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.
Very little memory headroom
You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.
Runtime ecosystem is narrower than CUDA
Intel GPUs can look attractive on memory per dollar, but local AI tooling, kernels, and model coverage are still broader and easier on CUDA today.
Remove offload with more accelerator memory
Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Prefer CUDA if you want the path of least resistance
If your goal is maximum runtime coverage, easier troubleshooting, and better support for new local AI releases, CUDA is usually still the safer upgrade path.
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs with offload (needs ~0.1 GB host RAM) | 20.5 tok/s | 5154 ms | 7K |
| Coding | C | Very compromised (needs ~1.1 GB host RAM) | 16.1 tok/s | 12025 ms | 7K |
| Agentic Coding | F | Too heavy | 10.7 tok/s | 26369 ms | 7K |
| Reasoning | C | Very compromised (needs ~1.1 GB host RAM) | 16.1 tok/s | 14212 ms | 7K |
| RAG | F | Too heavy | 10.7 tok/s | 32962 ms | 7K |
How Phi 3 Medium 14B (14B params) fits at each quantization level on Intel Arc B580 12GB (12.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.5 GB | Low | B63 |
Q3_K_S | 3 | 6.9 GB | Low | B63 |
NVFP4 | 4 | 7.8 GB | Medium | B63 |
Q4_K_MBest for your GPU | 4 | 8.5 GB | Medium | B63 |
Q5_K_M | 5 | 10.1 GB | High | F0 |
Q6_K | 6 | 11.5 GB | High | F0 |
Q8_0 | 8 | 15.0 GB | Very High | F0 |
F16 | 16 | 28.7 GB | Maximum | F0 |
Copy-paste commands to run Phi 3 Medium 14B on your machine.
Run
ollama run phi3:mediumUpgrade options
Intel Arc A770 16GBBudget pickRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 97%.
~$349 MSRP
Intel Arc Pro B50 16GBBest valueRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Adds memory headroom for longer context windows and future model growth.
~$399 MSRP
Intel Arc Pro B60 24GBIntel upgradeRemoves host-memory offload, which is usually the single biggest latency and throughput win.
Raises estimated decode speed by about 93%.
~$599 MSRP
Yes, Intel Arc B580 12GB can run Phi 3 Medium 14B with a C grade (Very compromised (needs ~1.1 GB host RAM)). Expected decode speed: 16.1 tok/s.
Phi 3 Medium 14B (14B parameters) requires approximately 13.7 GB of memory with Q4_K_M quantization.
The recommended quantization for Phi 3 Medium 14B is Q4_K_M, which balances quality and memory efficiency.
On Intel Arc B580 12GB, Phi 3 Medium 14B achieves approximately 16.1 tokens per second decode speed with a time-to-first-token of 12025ms using Q4_K_M quantization.
For coding workloads, Phi 3 Medium 14B on Intel Arc B580 12GB receives a C grade with 16.1 tok/s and 7K context.
On Intel Arc B580 12GB, Phi 3 Medium 14B can safely use up to 7K tokens of context. The model's official context limit is 128K, but available memory constrains the safe maximum.
Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.
Often yes, if your goal is the easiest setup and the widest runtime support. Intel can offer attractive memory capacity, but CUDA still tends to win on tooling maturity, guides, kernels, and model coverage for local AI.
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