GPU comparison
MacBook Air/Pro M4 (16GB) vs Mac Studio M2 Ultra (64GB) for local LLMs
How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 18 tracked models each one can run.
| MacBook Air/Pro M4 (16GB) | Mac Studio M2 Ultra (64GB) | |
|---|---|---|
| Memory | 16.0 GB | 64.0 GB |
| Bandwidth | 120 GB/s | 800 GB/s |
| Price (approx) | $1,199 | $3,999 |
| LLMs it runs | 10 of 18 | 16 of 18 |
| Best model it runs | GLM-4.7 Flash (MoE) · 43–64 tok/s | Gemma 4 31B · 15–23 tok/s |
The Mac Studio M2 Ultra (64GB) runs 6 more of the tracked models (16 vs 10), thanks to its 64.0 GB of memory. The Mac Studio M2 Ultra (64GB) has more memory bandwidth (800 GB/s), so it generates tokens faster at the same model and quant.