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text model · Qwen2.5 · macOS

Can I run Qwen2.5 1.5B on Apple M5 (32GB)?

Compatibility verdict VRAM threshold engine
Yes, it runs GPU accelerated ~109 tok/s est.

Yes. Qwen2.5 1.5B runs on Apple M5 (32GB) at Q4_K_M (~2.2 GB of ~21 GB usable).

Needs ~2.2 GB Device usable ~21 GB

Runs at Q4_K_M using ~2.2 GB of ~21 GB usable. You have room for FP16 for higher quality.

That figure is at a 4k context and moves about ±15% as context length changes. Apple M5 (32GB) leaves ~18.8 GB of headroom, room to step up to FP16 for higher quality.

Q4_K_M needed
~2.2 GB
Usable on device
~21 GB
Device memory
32 GB
Best quant
Q4_K_M
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Which quant fits

Quant ladder vs ~21 GB usable
Q2_K
~1.7 GB
Q3_K_M
~1.9 GB
Q4_K_M
~2.2 GB
Q5_K_M
~2.2 GB
Q6_K
~2.4 GB
Q8_0
~3 GB
FP16
~4.2 GB
The line marks Apple M5 (32GB)'s ~21 GB budget; rungs past it are too large.

Run it

Install commands macOS

Pick your tool. All 3 load the same Q4_K_M weights.

Ollama
$ ollama run qwen2.5:1.5b
llama.cpp
$ llama-cli -hf Qwen/Qwen2.5-1.5B-Instruct-GGUF:Q4_K_M
LM Studio
$ lms get Qwen/Qwen2.5-1.5B-Instruct-GGUF
Model Qwen2.5
Parameters
1.54B
Q4_K_M size
1.12 GB
Q8_0 size
1.89 GB
Context
128k
Ollama tag
qwen2.5:1.5b
Full Qwen2.5 1.5B requirements →
Device macOS
Memory
32 GB unified
Usable for weights
~21 GB
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M5 (32GB) →

You could also run

Run Qwen2.5 1.5B on other hardware

FAQ

Can Apple M5 (32GB) run Qwen2.5 1.5B?

Yes. Qwen2.5 1.5B runs on Apple M5 (32GB) at Q4_K_M (~2.2 GB of ~21 GB usable).

How much memory does Qwen2.5 1.5B need?

Apple M5 (32GB) has room to spare. At Q4_K_M the weights are ~1.12 GB; with KV cache and runtime overhead, budget ~2.2 GB at a 4k context.

What is the best tool to run Qwen2.5 1.5B on macOS?

LM Studio for a simple setup; mlx-lm for the most speed. vLLM is NOT a Mac tool, it is a CUDA/Linux serving engine. Unified memory is not a fixed VRAM slice; ~70% is usable for weights.

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Qwen2.5 1.5B on Apple M5 (32GB) compatibility badge A live badge for your model card or README, updated as the data is.
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Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.