The highest display resolution of the 49UX960 is 4K Ultra HD. That's over four times the display resolution of a Full HD TV, which is the most common display resolution. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
This TV's display resolution (4K Ultra HD) is in fact the best display resolution across all comparable spec TVs that have been available for a similar time to the 49UX960.
Across comparable types of TV the worst display resolution is HD Ready.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
Other 4K Ultra HD TVs currently available which you might also want to consider include the 49UW761[pl_3705774_price], or the 43UF6809[pl_3025280_price] both from LG which is cheaper.