Which is how fast?

And what is the memory bandwidth on these APUs?

you’d definitely be able to do it cheaper with PC hardware.

You can get a GPU with 192GB VRAM for less than a Mac? Sign me up please.

Learning to program has little to do with learning a language. You need to learn how to think and solve problems in a certain way. You need to learn a bunch of theory that gives you a solid foundation to build upon.

Learning a new language, especially one as simple as C, is trivial. You pick whatever language best suits the problem you’re trying to solve.

If you’re looking to expand your programming skills I’d recommend picking up a language that is very different from what you are used to. Something that makes you think differently. For example: I think every programmer could benefit from playing around with a functional language like Haskell.