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Voltarum Local LLM Hardware Guide

Best mini PCs and small machines for local LLMs

Unified-memory boxes that run big models quietly on a shelf: Strix Halo, Mac and DGX Spark.

Editorial opinionReviewed Oct 11, 2026

Unified memory lets the GPU use most of the system RAM, so a small box can hold models that would need several graphics cards. They are slower per GB than big GPUs, but quiet, efficient and easy to keep running 24/7.

  1. #1 · Best value

    AMD Ryzen AI Max+ 395 (Strix Halo)

    Highly recommended
    Memory
    128 GB
    Bandwidth
    256 GB/s
    Power
    120 W
    Largest popular model at 4-bit
    Qwen3.5 122B A10B

    from $2,200 (typical price)

    Editorial opinionOverall 8.3/10

    128 GB in x86 for less than a Mac Studio; great for MoE models.

  2. #2 · Best overall

    Apple Mac Studio (M5 Max)

    Highly recommended
    Memory
    128 GB
    Bandwidth
    614 GB/s
    Power
    480 W
    Largest popular model at 4-bit
    Qwen3.5 122B A10B

    from $2,499 (launch price)

    Editorial opinionOverall 8.7/10

    Faster memory and almost silent.

  3. #3 · Best small Mac

    Apple Mac mini (M5 Pro)

    Recommended
    Memory
    64 GB
    Bandwidth
    307 GB/s
    Power
    —
    Largest popular model at 4-bit
    Qwen3.6 35B A3B

    from $1,699 (launch price)

    Editorial opinionOverall 7.3/10

    64 GB in a Mac mini: mid-size models without noise.

  4. NVIDIA GB10 Grace Blackwell (DGX Spark and partners)

    Photo: Daniel Lu (User:dllu) · CC BY-SA 4.0

    #4 · Best for CUDA developers

    NVIDIA GB10 Grace Blackwell (DGX Spark and partners)

    Recommended
    Memory
    128 GB
    Bandwidth
    273 GB/s
    Power
    240 W
    Largest popular model at 4-bit
    Qwen3.5 122B A10B

    from $5,000 (typical price)

    Editorial opinionOverall 7.6/10

    128 GB with the full NVIDIA software stack.

How we chose

  • Complete computers, no graphics card needed.
  • At least 64 GB available.
  • Judged on capacity, speed, noise and price.

Read the methodology →