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URL: https://willitrunai.com/can-run/qwen-3-14b-on-m3-pro-18gb


Can Qwen 3 14B run on MacBook Pro M3 Pro 18GB?

YES — With Offload

A78Great
Estimated from fit model

Qwen 3 14B needs ~13.8 GB VRAM. MacBook Pro M3 Pro 18GB has 13.0 GB. With Q4_K_M quantization, expect ~11 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: Very lowStack: StandardBottleneck: Host offload
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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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 13.8 GB, 12.3 tok/s, Runs with offload (needs ~0.5 GB host RAM)
13.8 GB required13.0 GB available
106% VRAM needed

0.8 GB over capacity — needs offload or smaller quantization

Fit status

Runs with offload (needs ~0.5 GB host RAM)

Decode

12.3 tok/s

TTFT

15690 ms

Safe context

10K

Memory

13.8 GB / 13.0 GB

Offload

10%

Memory breakdown

Weights8.5 GB
KV Cache2.4 GB
Runtime0.9 GB
Headroom1.9 GB

See how fast it feels

See how fast it feelsQwen 3 14B on MacBook Pro M3 Pro 18GB
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: 12.3 tok/s decode · 15.7s TTFT (warm) · 31 tok/s prefill

What limits this setup

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.

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

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.

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Increase host RAM if you keep offloading

This setup may need roughly {ram} GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatSRuns with offload12.8 tok/s8236 ms10K
CodingARuns with offload11.4 tok/s16945 ms10K
Agentic CodingFToo heavy9.2 tok/s30485 ms10K
ReasoningARuns with offload11.4 tok/s20026 ms10K
RAGFToo heavy9.2 tok/s38106 ms10K

Quantization options

How Qwen 3 14B (14B params) fits at each quantization level on MacBook Pro M3 Pro 18GB (13.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
5.5 GB
LowS92
Q3_K_S
3
6.9 GB
LowS93
NVFP4
4

Get started

Copy-paste commands to run Qwen 3 14B on your machine.

Run

ollama run qwen3

Frequently asked questions

See all results for MacBook Pro M3 Pro 18GBSee all hardware for Qwen 3 14B
7.8 GB
Medium
S92
Q4_K_MBest for your GPU
4
8.5 GB
MediumS92
Q5_K_M
5
10.1 GB
HighF0
Q6_K
6
11.5 GB
HighF0
Q8_0
8
15.0 GB
Very HighF0
F16
16
28.7 GB
MaximumF0

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.