Hi in agust I´m gonna start in Engenering school and need to replies my old 13" mbp with a 15" rBMP for the bigger display for more windows side by side in class. I don´t need the high end with the dGPU but if I upgrade the low end 15" to same CPU, RAM, and space spec. It costs the same. My question is if I go for this option: 2.0GHz Quad-core Intel Core i7, Turbo Boost up to 3.2GHz 16GB 1600MHz DDR3L SDRAM 512GB PCIe-based Flash Storage Will I ever feel like I needed the last 300MHz CPU ? I know I´m gonna do programming but I do not think it will be programming that is CPU heavy in anyway. However I do not know for sure if I´ll need to do anything that will require the dGPU. On advance I will like to thank you all for any and all ideas and surgenstions and opinions you might offer.