Even though I disagree with your reasons, I respected your opinions until the last sentence. This is obvious from some one that does not like Apple - because of comment of ripping DVD's
As for the other parts
maya rendering, don't use maya - but do use Lightwave and Vue and for these platforms Intel is clearly the professional choice here. I actually purchase a dual xeon for this purpose. NVidia GPU are graphics choice
Photoshop - I been using Photoshop since 3.0 and Intel has alway been top
- Photoshop actually does not use much of GPU - later versions have additional which actually came from Newtek - makers of Lightwave.
bitcoin - never used it - I know that the benchmarks are heavily bias toward AMD.
Gaming - personaly I always uses Intel and NVidia and a lot of games have that on them also - so I believe others.
DVD ripping - well we know that is cpu.
In general for me the perfect combination is Intel CPU with NVidia GPU.
My last sentance wasn't a shot at apple, it was just meant to show how a circumstance where intel would trounce AMD is not even applicable. I value your input do you think at minimum 30-ish percent gpu bump would be benificial at the cost of a 25-ish percent CPU drop? Also I'm in awe of how this is even an issue, in my mind it's a no brainer even if you say no to it being worth it because this is a MBA not a professional photo editing machine.