Hi, First the good news, my new iMac has a 2.8 GHz Intel Core i5 processor with Turbo Boost up to 3.3 GHz, it has 16GB of memory, has 1TB Fusion Drive storage and an Intel Iris Pro Graphics 6200 GPU. And it has MacOS Sierra. And it's a late 2015 iMac. Now the bad news. My iMac does not have a Retina...