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GPU comparison

MacBook Pro M5 Max (36GB) vs MacBook Pro M5 Max (128GB) for local LLMs

How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 34 tracked models each one can run.

MacBook Pro M5 Max (36GB)MacBook Pro M5 Max (128GB)
Memory36.0 GB128.0 GB
Bandwidth460 GB/s614 GB/s
Price (approx)$3,599$5,099
LLMs it runs25 of 3430 of 34
Best model it runsGemma 4 31B · 15–22 tok/sGemma 4 31B · 14–22 tok/s

The MacBook Pro M5 Max (128GB) runs 5 more of the tracked models (30 vs 25), thanks to its 128.0 GB of memory. The MacBook Pro M5 Max (128GB) has more memory bandwidth (614 GB/s), so it generates tokens faster at the same model and quant.

What the MacBook Pro M5 Max (36GB) runs →What the MacBook Pro M5 Max (128GB) runs →Open the calculator →