Update 2026.10

Mac mini M4 16GB If you are focusing on 8B to 12B, it is worth considering. For larger models, reserve more memory.

This is the right configuration to minimize costs and start with 8B to 12B models.

Speed and memory for the same model

Mac mini M4 16GB · Qwen3.8 27B · local LLM speed and memory: Prompt processing · prefill — · Token generation · decode —; Required 17.56GB / Usable 13GB unified memory
4,096 input tokens · single request · prompt cache off

Hardware core specifications

Available memory
13GB
Memory bandwidth
120GB/s
Estimated sustained LLM load
About 42W
Korean price range (KRW)
165 × KRW 10,000–169 × KRW 10,000

Who it fits

  • Summary, translation, light coding
  • Quiet, always-on operation
  • Private Local LLM

Skip it if

The available memory is small, making it difficult to use models larger than 20B and long contexts together.

Recommended format for each device 4K input

The model you will experience with this equipment

K2 Horizon 0.9B

Required 1.03GB · spare time

MLX 4-bit

Decode

154 ~ 172.1 tok/s

First token

1.5 to 3.8 seconds

Gemma 4 12B

recommended

Required 8GB · titration

MLX 4-bit

Decode

11.6 ~ 12.9 tok/s

First token

12.8 ~ 31.1 s

speed tuning

Gemma 4 26B-A4B (MoE)

Required 15.55GB · tight

MLX 4-bit

Decode

9.6 ~ 15 tok/s

First token

6.2 ~ 18.0 s

speed tuning

Actual speed varies with runtime version, cooling, context length and quantization file.

purchase judgment

What tasks is it suitable for?

Document/Summary

Suitable

Fits short documents and 8B to 12B models.

Coding assistance

Conditional

Small models are possible, but large storage contexts are tight.

Create image

Conditional

It focuses on lightweight models and has fewer choices than the NVIDIA ecosystem.

The first thing to get stuck
The first limitation is the context length, as we need to fit the model and KV cache together in 13GB.
Configuration to check
M4 · Integrated memory 16GB · SSD 512GB or more
Criteria for spending more money
It is enough if you only use 8B~12B. If you are thinking of 27B, 24GB or more is better from the beginning.

On sales pages, look at memory before chips.

The model and speed assumptions above change if the product is not the 16GB configuration.

Frequently asked questions

What LLM can be run on the Mac mini M4 16GB?
K2 Horizon 0.9B, Gemma 4 12B, Gemma 4 26B-A4B (MoE) and others with a 4K input and the recommended format. Required memory varies by model and context length.
What is the local LLM power of the Mac mini M4 16GB?
Sustained load is about 42 W, with an actual range of 28–58 W.
Are the displayed token speeds ground truth?
This is a range aligned to collected benchmark measurements under the same conditions. Combinations without a matching measurement are estimated from the nearest result and vary with runtime, cooling, quantization file and context length.