Mac mini M4 64GB经济之选
64 GB Unified (+16)
B
Adds memory headroom for longer context windows and future model growth.8.1 tok/s 解码
Adds memory headroom for longer context windows and future model growth.
~$1,099 MSRP
Can Yi 1.5 34B run on MacBook Pro M4 Pro 48GB?
YES — Tight Fit
B62Good
Estimated — low-sample bucket· few comparable runs
Yi 1.5 34B needs ~30.5 GB VRAM. MacBook Pro M4 Pro 48GB has 34.6 GB. With Q4_K_M quantization, expect ~20 tok/s.
Runtime: llama.cppCapacity: TightBandwidth: LowStack: StandardBottleneck: Balanced
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) — 30.5 GB, 19.8 tok/s, Tight fit
30.5 GB required34.6 GB available
88% VRAM used
Fit status
Tight fit
Decode
19.8 tok/s
TTFT
9774 ms
Safe context
4K
Memory
30.5 GB / 34.6 GB
Memory breakdown
Weights20.7 GB
KV Cache3.7 GB
Runtime0.9 GB
Headroom5.2 GB
See how fast it feels
See how fast it feelsYi 1.5 34B on MacBook Pro M4 Pro 48GB
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: 19.8 tok/s decode · 9.8s TTFT (warm) · 50 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 | Tight fit | 19.8 tok/s | 5331 ms | 4K |
| Coding | B | Tight fit | 19.8 tok/s | 9774 ms | 4K |
| Agentic Coding | B | Runs with offload | 19.8 tok/s | 14217 ms | 4K |
| Reasoning | B | Tight fit | 19.8 tok/s | 11551 ms | 4K |
| RAG | B | Runs with offload | 19.8 tok/s | 17771 ms | 4K |
Quantization options
How Yi 1.5 34B (34B params) fits at each quantization level on MacBook Pro M4 Pro 48GB (34.6 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 13.3 GB | Low | B60 |
Q3_K_S | 3 | 16.7 GB | Low | B61 |
NVFP4 | 4 | 19.0 GB | Medium | B62 |
Q4_K_M | 4 | 20.7 GB | Medium | B62 |
Q5_K_M | 5 | 24.5 GB | High | B61 |
Q6_KBest for your GPU | 6 | 27.9 GB | High | B61 |
Q8_0 | 8 | 36.4 GB | Very High | F0 |
F16 | 16 | 69.7 GB | Maximum | F0 |
Get started
Copy-paste commands to run Yi 1.5 34B on your machine.
Run
lms load Yi-1.5-34B-Chat && lms server start升级选项
能流畅运行 Yi 1.5 34B 的硬件
MacBook Pro M4 Pro 64GB最佳性价比
64 GB Unified (+16)
B
Adds memory headroom for longer context windows and future model growth.19.8 tok/s 解码
Adds memory headroom for longer context windows and future model growth.
~$1,599 MSRP
MacBook Pro M3 Max 64GBApple 升级
64 GB Unified (+16)400 GB/s (+127)
B
Adds memory headroom for longer context windows and future model growth.12.6 tok/s 解码
Adds memory headroom for longer context windows and future model growth.
~$2,499 MSRP
Frequently asked questions
Can MacBook Pro M4 Pro 48GB run Yi 1.5 34B?
Yes, MacBook Pro M4 Pro 48GB can run Yi 1.5 34B with a B grade (Tight fit). Expected decode speed: 19.8 tok/s.
How much VRAM does Yi 1.5 34B need?
Yi 1.5 34B (34B parameters) requires approximately 30.5 GB of memory with Q4_K_M quantization.
What is the best quantization for Yi 1.5 34B?
The recommended quantization for Yi 1.5 34B is Q4_K_M, which balances quality and memory efficiency.
What speed will Yi 1.5 34B run at on MacBook Pro M4 Pro 48GB?
On MacBook Pro M4 Pro 48GB, Yi 1.5 34B achieves approximately 19.8 tokens per second decode speed with a time-to-first-token of 9774ms using Q4_K_M quantization.
Can MacBook Pro M4 Pro 48GB run Yi 1.5 34B for coding?
For coding workloads, Yi 1.5 34B on MacBook Pro M4 Pro 48GB receives a B grade with 19.8 tok/s and 4K context.
What context window can Yi 1.5 34B use on MacBook Pro M4 Pro 48GB?
On MacBook Pro M4 Pro 48GB, Yi 1.5 34B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.
Is unified memory on MacBook Pro M4 Pro 48GB as fast as VRAM for Yi 1.5 34B?
Not always. MacBook Pro M4 Pro 48GB 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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<iframe src="https://willitrunai.com/embed/yi-1.5-34b-on-m4-pro-48gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
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