mates i want to buy for myself 13-inch MacBook Pro MID (2012) exactly with Retina Display but i need to upgrade memory to 16Gb... my question is CAN i upgrade 8Gb (2x4) default memory to 16Gb (2x8) and what memory will be best for that model. Thank you in advance for your answers!! I search web for that answer but didn't find normal answer for RETINA Displey edition!! For 13' not retina i know i can upgrade him but not so sure for retina display edition And please excuse my bad English!!