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Can I run Apple OpenELM 3B on Apple M5 (16GB)?

Compatibility verdict VRAM threshold engine
Yes, it runs GPU accelerated ~70 tok/s est.

Yes. Apple OpenELM 3B runs on Apple M5 (16GB) at Q4_K_M (~3 GB of ~10.5 GB usable).

Needs ~3 GB Device usable ~10.5 GB

Runs at Q4_K_M using ~3 GB of ~10.5 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 (16GB) leaves ~7.5 GB of headroom, room to step up to FP16 for higher quality.

Q4_K_M needed
~3 GB
Usable on device
~10.5 GB
Device memory
16 GB
Best quant
Q4_K_M
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Which quant fits

Quant ladder vs ~10.5 GB usable
Q2_K
~2.5 GB
Q3_K_M
~2.7 GB
Q4_K_M
~3 GB
Q5_K_M
~3.3 GB
Q6_K
~3.7 GB
Q8_0
~4.2 GB
FP16
~7.3 GB
The line marks Apple M5 (16GB)'s ~10.5 GB budget; rungs past it are too large.

Run it

Install commands macOS

Pick your tool. All 2 load the same Q4_K_M weights.

llama.cpp
$ llama-cli -hf mradermacher/OpenELM-3B-GGUF:Q4_K_M
LM Studio
$ lms get mradermacher/OpenELM-3B-GGUF

How to run it

On macOS use LM Studio (Polished GUI, ships MLX on Apple Silicon, one-click model downloads.).

Model OpenELM
Parameters
3B
Q4_K_M size
1.76 GB
Q8_0 size
3.01 GB
Context
2k
Full Apple OpenELM 3B requirements →
Device macOS
Memory
16 GB unified
Usable for weights
~10.5 GB
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M5 (16GB) →

You could also run

Run Apple OpenELM 3B on other hardware

FAQ

Can Apple M5 (16GB) run Apple OpenELM 3B?

Yes. Apple OpenELM 3B runs on Apple M5 (16GB) at Q4_K_M (~3 GB of ~10.5 GB usable).

How much memory does Apple OpenELM 3B need?

Apple M5 (16GB) has room to spare. At Q4_K_M the weights are ~1.76 GB; with KV cache and runtime overhead, budget ~3 GB at a 4k context.

What is the best tool to run Apple OpenELM 3B 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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Apple OpenELM 3B on Apple M5 (16GB) 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.