I echo what Mads said,
but add some of my own thoughts/experience… (FYI i use AFX on a daily basis for work)
1) are you doing this for fun or for business? if for fun, then spend as little as possible for now. computers change all the time, very quickly. just learn and have fun doing it!
2) that said, 8gb of a RAM is not a lot when you start RAM previewing in AFX. so if you can afford to spend the $175 for 64gb, that sounds like a good investment. but you probably will not be able to use that RAM in a future computer as Apple M-series are all integrated memory. and PC world is changing right now with AMD’s new platform, and Intel prob changing in the next 12 months, so it’s doubtful that RAM would be reusable if you get a new computer.
3) most of AFX’s functions use CPU power more than GPU, so a Mac would be fine. just so you know, I use CS5 on a 2013 i7 MBP for work! lol. although I also have faster 2015 MBP, M1 mini, and I built a PC with an AMD 5800x & RTX 3070 GPU. I have done rendering tests between the machines and the M1 is about 5x faster than the 2013. but that’s not a big deal to me since my work renders are rarely over 15-20 mins. (surprisingly the 5800x renders about the same speed as the M1 mini, since their single core performance is about the same!)
4) if you plan to heavily get into 3D that uses GPU rendering — and i don’t mean AFX 3D, like Redshift, Octane, Unreal Engine — then a switch to PC would be more appropriate. but again, I stress that if you are simply learning for now, then spend as little as possible! I know some basic 3D and have done simple 3D for work even on a dual-core 2013 Macbook Air! yes the renders took longer, but i got my work done so that’s all that mattered 🙂 I built a PC last year because I want to get into learning Unreal Engine and a friend gave me a license to Red Shift (which needs GPU rendering) — but since I was so busy with other things the past year, I barely used the PC 🙁 and if i’d have waited, I could have saved hundreds of $$$ now or have a much more powerful computer this year for the same cost…so lesson learned! don’t spend more than you need to, until your growth determines it’s needed 🙂
Hope that helps!