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Voltarum Local LLM Hardware Guide

Apple · Apple silicon · 2026

Apple Mac mini (M6)

Good budget option

A silent, tiny always-on box for small models. Choose 32 GB if AI is the goal.

Memory
16 GB–32 GB
Bandwidth
170 GB/s
Power
—
Largest popular model at 4-bit
Qwen3.6 27B

from $899 (launch price)

Researched from manufacturer data and public sources; not tested by us.· Last reviewed Oct 11, 2026

What it can run

Estimate

Popular models at Q4_K_M with a 32K-token context. Memory needed from real model files; speed is the theoretical ceiling.

Change model size or context

Model weightsContext cache (KV)RuntimeUsable limit (colour = verdict)

ModelVerdictMemorySpeed ceiling
Qwen3 1.7BRuns
6.4 GB / 11 GB · with 16 GB
≤ 153 tok/s
Qwen3.5 9BRuns
8.3 GB / 11 GB · with 16 GB
≤ 30 tok/s
Gemma 4 12BRuns
9.5 GB / 11 GB · with 16 GB
≤ 24 tok/s
gpt-oss-20bRuns
14 GB / 21 GB · with 32 GB
≤ 85 tok/s
Qwen3.6 27BRuns, tight
20 GB / 21 GB · with 32 GB
≤ 10 tok/s
Qwen3.6 35B A3BNot enough memory
24 GB / 21 GB · with 32 GB
—
Llama 3.3 70BNot enough memory
55 GB / 21 GB · with 32 GB
—
gpt-oss-120bNot enough memory
65 GB / 21 GB · with 32 GB
—
Qwen3.5 122B A10BNot enough memory
79 GB / 21 GB · with 32 GB
—
Qwen3.5 397B A17BNot enough memory
247 GB / 21 GB · with 32 GB
—

Theoretical maximum for generating text: memory bandwidth divided by the bytes read per token. Real runs usually reach about half to three quarters of it.

Where to buy

Prices are editorial references (launch price and a typical street price on the date shown), not live prices. In 2026 the memory shortage has pushed many prices well above launch.

Prices are shown only if updated in the last 24 hours and may change; the retailer’s price at checkout applies. We may earn a commission from these links at no cost to you. Affiliate disclosure

Overview

Editorial opinion

Best for: Home Assistant voice, small private chat models and a low-power home server.

Editorial opinionWould we buy it today?

Yes for small models and low power; for 27B+ models get an M5 Pro or more.

Pros and cons

Editorial opinion

Pros

  • Near-silent and a few watts at idle
  • Simple setup with Ollama or LM Studio
  • MLX support

Cons

  • 170 GB/s: slow with anything over 14B
  • Memory cannot be upgraded later

Good to know

macOS lets the GPU use about two thirds of memory on machines with up to 36 GB, and about three quarters above that. The limit can be raised (sudo sysctl iogpu.wired_limit_mb=…), leaving less for macOS and other apps; our figures use the default.

Specifications

Factual data
Manufacturer
Apple
Chip
M6
Architecture
Apple silicon
Type
Unified-memory computer
Form factor
Mini PC
Released
2026
Availability
On sale
Memory options
16 GB / 24 GB / 32 GB
Memory type
Unified LPDDR
Memory bandwidth
170 GB/s
Usable for models (default)
21 GB / 32 GB
Compute stack
Metal / MLX
Models
Any model that fits
Several units for one model
Yes

Source: Manufacturer specifications

Software support

Editorial opinion

How well the popular local-AI tools run on it today (editorial assessment).

  • llama.cppExcellent
  • OllamaExcellent
  • LM StudioExcellent
  • vLLMPoor
  • MLXExcellent

Measured speeds

Factual data

Measured results with their source. We never invent speeds.

No measured results yet. The table above shows the theoretical ceiling instead.

Alternatives

AMD GPUs

AMD Radeon RX 7900 XTX

Memory
24 GB
Bandwidth
960 GB/s

Largest popular model at 4-bit: Qwen3.6 27B

24 GB and 960 GB/s: RTX 3090-class memory, bought new.

from $1,358 (typical price)Recommended

Intel GPUs

Intel Arc Pro B70

Memory
32 GB
Bandwidth
608 GB/s

Largest popular model at 4-bit: Qwen3.6 35B A3B

Intel's big Battlemage: 32 GB and 608 GB/s for less than AMD's R9700.

from $1,268 (typical price)Recommended

NVIDIA GPUs

NVIDIA GeForce RTX 3090

Memory
24 GB
Bandwidth
936 GB/s

Largest popular model at 4-bit: Qwen3.6 27B

The homelab classic: 24 GB and 936 GB/s, bought used. Two of them make 48 GB.

from $1,340 (typical price)Good budget option