Everyday lurker but I really don't post much as I always seem to find my answer. I am set on getting the retina iMac, I like to casually play games on my current 2011 iMac and edit photos daily via Lightroom and PS. I intend on needing to edit 4K video very soon. I was saving money for this day and have just enough money set aside to be able to either upgrade the processor or the video card, my question is which should I choose to handle those tasks better on this new retina display. Photo editing takes priority over games and I already have the memory on hand to make it at least 16GB for now and am going with SSD option. The expansive knowledge of fellow forum members is greatly appreciated. Thank you!