I've been thinking about picking up a '15 13 rMBP. I'm coming from a i7 2630qm, AMD 6630m/HD3000, 8gb 1333mhz and a 1366x768 display, so I'm curious what sort of boosts/hits I'll be taking when I replace my current laptop. CPU wise, I'm expecting a hit in performance, but I assume it isn't that much with the i5 5257u? I'm not sure how well the Iris 6100 compares to the 6630m though (It bit the dust recently, so I've been stuck with the HD3000). I do some light gaming and PS work which the 6630m was fairly adequate for, so I'm curious if I can expect the same thing from the Iris 6100? Besides those two things, everything else is basically much better compared to my current laptop. Thanks guys.