You are running the wrong model. Get a smaller one Macs are usually ok with their performance since the GPU has access to main memory. A decent Nvidia GPU with

You are running the wrong model. Get a smaller one Macs are usually ok with their performance since the GPU has access to main memory. A decent Nvidia GPU with lots of memory is still king though. I run codelama:7b on a MacBook air, and even auto complete is partially usable.