Modern notebooks can offer performance and feature set comparable to those of desktop PCs. One thing that laptops cannot offer is the screen real estate: desktops can be equipped with a large 32-43-inch monitor, whereas mobile workstations come with a 15.6 – 17.3-inch LCD at best (unless, of course, they are connected to an external panel). ASUS this week launched its ZenBook Pro Duo notebook that comes with a 15.6-inch 4K primary OLED display that is accompanied by a 14-inch secondary screen.