My local Apple Store totally screwed up my old iMac when I brought in in for a simple repair and after a long battle they convinced me to walk out with a new iMac, but only one that they had in-store. My only concern is I maxed out my old iMac online when I bought it since I do a lot of graphics/video heavy work. I literally need this thing to feed myself. I'm hoping those who are more Mac savvy than I (I don't trust my store anymore) might be able to tell me how my old Mac's basic specs compare to the new on. Previous iMac 27" Mid-2011 Processor: 2.93 GHz i7 Graphics: ATI Radeon HD 5750 1024 MB Ram: 16 GB New iMac 27" Late-2013 Processor: 3.5 GHz i7 Graphics: NVIDIA GeForce GTX 780m Ram: 8 GB* *I know the ram is less, but they told me that was the highest they had in-store and I didn't have any other options. I'd just like to know if I do my video and graphics heavy work is the new one going to be less/slower than the previous one. Can anybody help confirm?