How Do Apple's Retina Modes Work?
There seems to be some common confusion about Apple's so called "Retina" modes/resolutions. Retina modes do not upscale text or icons while maintaining full 4K resolution. Simply put they are lower resolution settings that will allow text and icons to be smooth and clear. Since they are not pushing a 4K resolution you may feel that a 4K monitor is not worth the investment, but do keep in mind this offers a level of sharpness that cannot be matched by standard monitors.