Apple M4 Max vs M4 Pro: Which Is Better for Local LLMs?
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Quick Answer
The M4 Max is better than the M4 Pro for local LLMs — up to 546 GB/s memory bandwidth vs 273 GB/s, and up to 128GB unified memory vs 48GB, meaning faster tokens/sec and support for larger models.
- ▸M4 Max memory bandwidth: up to 546 GB/s (highest-core-count config) vs M4 Pro's 273 GB/s — nearly double.
- ▸M4 Max unified memory ceiling: up to 128 GB vs M4 Pro's 48 GB — unlocks 70B-class models the Pro cannot fit.
- ▸For models both chips can fit (up to ~32B), the M4 Max generates tokens noticeably faster due to bandwidth alone.
Updated: 2026-07
Key Takeaways
- ✓M4 Max memory bandwidth: up to 546 GB/s vs M4 Pro's 273 GB/s — nearly double, and bandwidth drives tokens/sec
- ✓M4 Max unified memory ceiling: up to 128 GB vs M4 Pro's 48 GB — the Max alone can fit 70B-class models
- ✓For any model size both chips can load, the M4 Max is meaningfully faster, not just capable of more
- ✓The M4 Pro remains the better value pick if your target model size fits comfortably within 48 GB
Best Pick: M4 Max, If Budget Allows
The Apple M4 Max outperforms the M4 Pro for local LLMs because local inference speed is primarily bound by memory bandwidth once a model fits in unified memory — and the M4 Max's bandwidth (up to 546 GB/s on the highest-core-count configuration) is nearly double the M4 Pro's 273 GB/s. This means the M4 Max runs identical models faster, not just larger ones.
The M4 Max also raises the unified memory ceiling to 128 GB, versus the M4 Pro's 48 GB maximum. That unlocks model sizes the M4 Pro simply cannot load at all — including 70B-class models at reasonable quantization, which need far more than 48 GB.
The M4 Pro remains the better value choice if your target models fit comfortably within its 48 GB ceiling — for example, sticking to 14B-32B models. You pay a real premium for the M4 Max's extra bandwidth and memory headroom, and it is only worth it if you actually need one or both.
M4 Max vs M4 Pro — Spec by Spec
Memory bandwidth is the headline difference: the M4 Pro tops out at 273 GB/s, while the M4 Max ranges from 410 GB/s (lower-core-count config) to 546 GB/s (higher-core-count config) depending on which M4 Max variant you buy — check the exact configuration before assuming the top bandwidth figure applies.
Unified memory ceiling is the other major factor: 48 GB maximum on the M4 Pro versus up to 128 GB on the M4 Max. If your model sizes will always fit within 48 GB, the bandwidth gap is the only thing you're paying for with the Max; if you need more than 48 GB of usable memory, the M4 Pro is not an option at all.
Related Reading
- ▸Is the Mac Mini M4 Good for Local LLMs? — the M4 and M4 Pro Mac Mini configurations
- ▸Best Local LLM for a 32 GB Unified Memory Mac — sizing models to memory
- ▸How Much VRAM for a 70B Model? — why the M4 Max's 128GB ceiling matters for 70B
Frequently Asked Questions
Do all M4 Max configurations have the same memory bandwidth?▾
Is the M4 Pro good enough for most local LLM use?▾
How much more expensive is the M4 Max configuration?▾
Does the M4 Max help with fine-tuning too?▾
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