The 2012 2.3 uMBP is 1700$ and 2.7 uMBP is 2600$ at 15 inches. The other difference is the 1GB of Graphic ram vs 512MB. Now the card I understand and will live with since if I ever play a game it's gonna be on console. But I do use Logic and now I'm starting to think about spending that extra thousand for a .4 CPU bump. I did this before in 2011 when I returned my 17 inch and order a BTO ultimate due to stress. Can someone please talk me out of it. I can't remember where CPU clock cycles help and Im thinking its less relevant than ever before in the Ivy Bridge era of processors. Would it be more snappy when I make music? Or is that only gonna make a real world difference in even more complex work like CAD or whatever? Also maybe some relevant benchmark scores to give me an idea of the relative difference between the two. I searched Ivy Bridge vs Sandy but couldn't find any articles relevant to my question.