I'm sort of interested in the new 13" retina MBPs. I currently have a mid-2012 cMBP with 2.9 GHZ Core i7. I wouldn't be able to afford upgrading to the i7 on the 13" rMBP, but I'm wondering if there is a chart somewhere where I could look at how the current i7 I have (whichever generation that is) compares to a Haswell i5? Thanks! BTW, I did try searching the threads . . .