The UN65HU9000 has a maximum display resolution of 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.
A 4K Ultra HD HD type is actually the best display resolution across all comparable spec TVs that were released around the same time as the UN65HU9000.
The worst display resolution amongst comparable types of TV is Full HD.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.