The highest display resolution of the 49PUS6551 is 4K Ultra HD. That's over four times the display resolution of a Full HD television, which is the most common display resolution. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
This television's display resolution (4K Ultra HD) is in fact the best display resolution amongst all recently released televisions.
The worst display resolution across similar types of television is HD Ready.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
There are a number of alternative 4K Ultra HD TVs currently available that you might want to look at including the LG 49UH610[plb_3415206_price] which has a better Rating.