So I just picked up a 2.3/16/512 rmbp. This is my first mac and so far I'm loving it. I'm going through all the windows to find out where things are. One thing that concerns me, I thought this machine came with the 750m gpu. When I go to about this mac, more info and click displays, it shows Iris Pro 1024mb graphics but doesn't say anything about the 750m. Am I being overly paranoid or am I missing something?