3 ms·2015 macbook pro retina here, which is 1920x1200 (or 1440x900). 1920/1200 = 1440x900 = 16/10 = 1.6...by dylanh 10y ago2015 macbook pro retina here, which is 1920x1200 (or 1440x900). 1920/1200 = 1440x900 = 16/10 = 1.6...