MojoKid writes "Mobile device displays continue to evolve and along with the advancements in technology, resolution continues to scale higher, from Apple's Retina Display line to high resolution IPS and OLED display in various Android and Windows phone products. Notebooks are now also starting to follow the trend, driving very high resolution panels approaching 4K UltraHD even in 13-inch ultrabook form factors. Lenovo's Yoga 2 Pro, for example, is a three pound, .61-inch thick 13.3-inch ultrabook that sports a full QHD+ IPS display with a 3200X1800 native resolution. Samsung's ATIV 9 Plus also boast the same 3200X1800 13-inch panel, while other recent releases from ASUS and Toshiba are packing 2560X1440 displays as well. There's no question, machines like Lenovo's Yoga 2 Pro are really nice and offer a ton of screen real estate for the money but just how useful is a 3 or 4K display in a 13 to 15-inch design? Things can get pretty tight at these high resolutions and you'll end up turning screen magnification up in many cases so fonts are clear and things are legible. Granted, you can fit a lot more on your desktop but it raises the question, isn't 1080p enough?"