The real stunner of the Asus ZenBook NX500 is its 15.6-inch display. At 3840 x 2160 pixels of 4K Ultra HD resolution, this screen is one of the best on any notebook.
I watched hours of videos -- movie trailers, vlogs, TV-show clips -- and the Asus' display only made me want to watch more. Details are sharp, colors are bold and bright, and everything feels like it's alive in front of you, just 2 feet in front of your face.
The ZenBook has the same resolution as the Toshiba Satellite P50T; both are higher than the Dell XPS 15 (3200 x 1800p) and the 15-inch MacBook Pro with Retina display (2880 x 1800p).
The ZenBook NX500's display is also the first 4K touch screen to use 3M Quantum Dot Enhancement Film technology, which dramatically widens the range of colors it can achieve. Asus claims the ZenBook NX500 can reach 146 percent of the sRGB color gamut, and in our test, it came close, measuring 140.6 percent. That blows the category average of 80 percent out of the water, and even the Satellite P50T, with its good score of 98.6 percent.