Read this:

https://www.reddit.com/r/mac/comments/10gpu46/hardware_for_scientific_computing/j54jpj3/?utm_source=share&utm_medium=ios_app&utm_name=iossmf&context=3

My recommendation: (1) Abandon macOS and get a laptop with an Nvidia GPU. Or (2) If you don’t like working on Linux/Windows and prefer Macs, then get a cheap MBA and an laptop with an Nvidia GPU. Use the Mac for coding but run the codes over ssh on the Nvidia laptop. The combined price would not exceed that of a specced out MacBook Pro, while the perf benefit would be more than 10x. Or (3) If you want to both code and run your code on a Mac and also don’t want to carry two laptops, then get the highest specced MacBook Pro possible. Neural network training is computationally very expensive. Normally we run our neural networks in our lab servers that contain anywhere between 4 to 64 GPUs. Even the highest end M2 Maxes are nothing to an RTX 4090.