So, as the title explains, I have a 2012 Macbook Pro retina 15" model with the 1gb 650 card. I am looking for a new monitor for real estate and retina readability. Now, the part that separates this question (to my knowledge) from others would be for the following reason. I would like to buy a 4k monitor, something like the Samsung U28D590D, but only use it in 1080P HiDPi mode. Essentially, running this 4k monitor in a retina quality screen resolution. Would my laptop be able to handle this 1080 HiDPi at 60Hz (running yosemite btw)... without any extra video components or software? Thoughts/suggestions?