Also, older MBPs are still more than usable. I'm tying this on a 2012 retina MBP with 16GB RAM. There's really nothing I can't run comfortably on it. Even when

Also, older MBPs are still more than usable. I'm tying this on a 2012 retina MBP with 16GB RAM. There's really nothing I can't run comfortably on it. Even when they rev the MBP, there's still a ton of people who've bought retinas in the last 4 years for whom it will make no sense to upgrade.