can-i-run-this-llm

GPU comparison

MacBook Air/Pro M5 (24GB) vs NVIDIA RTX 5080 (16GB) for local LLMs

How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 64 tracked models each one can run.

MacBook Air/Pro M5 (24GB)NVIDIA RTX 5080 (16GB)
Memory24.0 GB16.0 GB
Bandwidth153 GB/s960 GB/s
Price (approx)$1,299$1,399
LLMs it runs45 of 6445 of 64
Best model it runsQwen3.8 27B · 9–13 tok/sQwen3.8 27B · 54–82 tok/s

Both run the same number of models, but the MacBook Air/Pro M5 (24GB) has more memory (24.0 GB), so it can hold larger models at higher quality. The NVIDIA RTX 5080 (16GB) has more memory bandwidth (960 GB/s), so it generates tokens faster at the same model and quant.

What the MacBook Air/Pro M5 (24GB) runs →What the NVIDIA RTX 5080 (16GB) runs →Open the calculator →