The highest display resolution of the 55UB830 is 4K Ultra HD. That's over four times the display resolution of the most common HD type of Full HD. 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 amongst all large TVs that were released more than two years ago.
The worst display resolution across comparable types of TV is Full HD.
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 also want to look at including the Samsung UE55HU6900 (£799.00), the LG 55UB820, or the Sony KD-55X9005 (£899.00) which has a better Rating.