Hey guys, I am looking at the MBP and see that the top model 13'' has a i7 2.7GHz while the 15'' and 17'' doesn't have 2.7GHz. Does that mean the 13'' i7 is faster then its brothers? The only difference i see is the graphic card. Would a 13'' i7 be good enough for autoCAD? As Apple advertise the AMD graphic card on 15'' and 17'' is good for autoCAD. Note: Can the admin move this thread to the MBP section? Stupid me.