MacBook Pro M4 32GB经济之选
32 GB Unified (+8)120 GB/s (+20)
B
Adds memory headroom for longer context windows and future model growth.9.6 tok/s 解码
Adds memory headroom for longer context windows and future model growth.
~$799 MSRP
Can Phi 3 Medium 14B run on MacBook Pro M3 24GB?
YES — Tight Fit
B57Good
Estimated from fit model
Phi 3 Medium 14B needs ~15.1 GB VRAM. MacBook Pro M3 24GB has 17.3 GB. With Q4_K_M quantization, expect ~9 tok/s.
Runtime: llama.cppCapacity: TightBandwidth: Very lowStack: StandardBottleneck: Memory bandwidth
Operating mode
Choose the run profile you care about
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
Q4_K_M (Medium quality) — 15.1 GB, 8.6 tok/s, Tight fit
15.1 GB required17.3 GB available
87% VRAM used
Fit status
Tight fit
Decode
8.6 tok/s
TTFT
22618 ms
Safe context
28K
Memory
15.1 GB / 17.3 GB
Memory breakdown
Weights8.5 GB
KV Cache3.1 GB
Runtime0.9 GB
Headroom2.6 GB
See how fast it feels
See how fast it feelsPhi 3 Medium 14B on MacBook Pro M3 24GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step.
Given information:
- Speed = 60 mph (miles per hour)
- Time = 2.5 hours
Formula: Distance = Speed x Time
Calculation:
Distance = 60 mph x 2.5 h
= 150 miles
The train travels 150 miles.
Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time.
Breakdown:
- First half: 1.25 hours at 60 mph = 75 miles
- Stop: 20 minutes (no distance)
- Second half: 1.25 hours at 60 mph = 75 miles
Total distance: 150 miles (same)
Total time: 2.5 h + 0.33 h = 2.83 hours
Average speed: 150 / 2.83 = 53 mph
The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 8.6 tok/s decode · 22.6s TTFT (warm) · 21 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
Shared-memory contention still exists
The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.
Best improvement path
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 8.6 tok/s | 12337 ms | 28K |
| Coding | B | Tight fit | 8.6 tok/s | 22618 ms | 28K |
| Agentic Coding | B | Runs with offload (needs ~0.4 GB host RAM) | 7.8 tok/s | 36029 ms | 28K |
| Reasoning | B | Tight fit | 8.6 tok/s | 26730 ms | 28K |
| RAG | B | Runs with offload | 7.3 tok/s | 48414 ms | 28K |
Quantization options
How Phi 3 Medium 14B (14B params) fits at each quantization level on MacBook Pro M3 24GB (17.3 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.5 GB | Low | B60 |
Q3_K_S | 3 | 6.9 GB | Low | B61 |
NVFP4 | 4 | 7.8 GB | Medium | B62 |
Q4_K_M | 4 | 8.5 GB | Medium | B62 |
Q5_K_M | 5 | 10.1 GB | High | B62 |
Q6_KBest for your GPU | 6 | 11.5 GB | High | B62 |
Q8_0 | 8 | 15.0 GB | Very High | F0 |
F16 | 16 | 28.7 GB | Maximum | F0 |
Get started
Copy-paste commands to run Phi 3 Medium 14B on your machine.
Run
ollama run phi3:medium升级选项
能流畅运行 Phi 3 Medium 14B 的硬件
Mac mini M4 32GB最佳性价比
32 GB Unified (+8)120 GB/s (+20)
B
Adds memory headroom for longer context windows and future model growth.9.6 tok/s 解码
Adds memory headroom for longer context windows and future model growth.
~$1,099 MSRP
MacBook Pro M4 Pro 64GBApple 升级
64 GB Unified (+40)273 GB/s (+173)
B
Raises estimated decode speed by about 171%.23.3 tok/s 解码
Raises estimated decode speed by about 171%.
Adds memory headroom for longer context windows and future model growth.
~$1,599 MSRP
RTX A4500 20GB最大飞跃640 GB/s (+540)
B
Raises estimated decode speed by about 630%.62.8 tok/s 解码
Raises estimated decode speed by about 630%.
~$2,000 MSRP
Frequently asked questions
Can MacBook Pro M3 24GB run Phi 3 Medium 14B?
Yes, MacBook Pro M3 24GB can run Phi 3 Medium 14B with a B grade (Tight fit). Expected decode speed: 8.6 tok/s.
How much VRAM does Phi 3 Medium 14B need?
Phi 3 Medium 14B (14B parameters) requires approximately 15.1 GB of memory with Q4_K_M quantization.
What is the best quantization for Phi 3 Medium 14B?
The recommended quantization for Phi 3 Medium 14B is Q4_K_M, which balances quality and memory efficiency.
What speed will Phi 3 Medium 14B run at on MacBook Pro M3 24GB?
On MacBook Pro M3 24GB, Phi 3 Medium 14B achieves approximately 8.6 tokens per second decode speed with a time-to-first-token of 22618ms using Q4_K_M quantization.
Can MacBook Pro M3 24GB run Phi 3 Medium 14B for coding?
For coding workloads, Phi 3 Medium 14B on MacBook Pro M3 24GB receives a B grade with 8.6 tok/s and 28K context.
What context window can Phi 3 Medium 14B use on MacBook Pro M3 24GB?
On MacBook Pro M3 24GB, Phi 3 Medium 14B can safely use up to 28K tokens of context. The model's official context limit is 128K, but available memory constrains the safe maximum.
Is unified memory on MacBook Pro M3 24GB as fast as VRAM for Phi 3 Medium 14B?
Not always. MacBook Pro M3 24GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.
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