I'm looking to buy a late 2013 27 inch iMac. I want to upgrade the processor to 3.5GHz, the ram to 32GB and the graphics card to the NVIDIA GeForce GTX 780M 4GB GDDR5. I would just love to gain what your opinion is on how this computer would run ? I intend to study Architecture at Uni next year, so I'll often have a lot of editing software open and also would like to have a computer that can run games nicely. Opinions would be awesome, every friend of mine I try to talk to will reply with nothing but 'get a PC with Windows'.