Actually the new MBPr is 100% different on the inside, components etc.
Nothing is the same, if it were, Apple would not have declared it an all new MBP. None of these components are in the old MBP, this new MacBook Pro Retina is an engineering marvel.
Here are pictures of the all new, thinner and radically designed logic board, and a picture of all the internals as seen with one half of the case removed. It simply doesn't get any more radically different than this.
If any of these components fail, or become problematic in the first years use, Apple will correct that on the next version. This is most certainly a version 1.0 product. And _again_ I am _NOT_ being critical, simply identifying what you see here.
The second generation will be the benefactor of all Apple has learned after the first year in the hands of users, and their engineers, with it being used under real world conditions. There is only so much that beta testing reveals. The other bugs and annoyances are what appears only after it's in use in the field.
I am not making these claims to upset people, or to stir something up, I make them because they are true. I have personally experienced first year models, and wish to help others avoid the inevitable. The bottom line truth is you get a much better version the second year.
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