Hi everyone, I have been looking at upgrading to a 15" macbook pro for a while and now that a minor refresh happened I am finally ready to pull the trigger. I am debating whether or not I need a dedicated GPU or if the Iris Pro will be fine and also if having a 512 gb ssd is worth it. Right now I have no need for a dedicated graphics card but I am going into college for Mechanical Engineering and will need to run CAD applications. I have not found a definitive answer on whether or not the iris pro will be fine for that. Also right now, I am fine with 256 gb but I will be putting a lot more pictures and school things on my computer and plan on keeping it for all four years of college. I also plan to run windows through bootcamp for some engineering applications so the extra space could be helpful. I also heard the 512 gb ssd is slightly faster. When I upgrade the base model to 2.5 ghz and a 512 ssd it is only forty dollars less than the one with the dGPU. I know having a dGPU would drain my battery faster and create more heat for intensive tasks. Battery life is important to me, but I am willing to make that sacrifice if it will benefit me a lot more while running CAD applications. Basically I am trying to find out if I need the dGPU and should just pull the trigger on the high end model. If I dont need it should I get the 2.5/256gb setup or the 2.2/512 setup. Sorry for the long post and thank you.