A 65 inch HDTV could be too big for the full HD resolution depending on how far you're from the TV.
To get the best viewing experience on a 65 inch TV you should be sitting at least 6 feet away from the 65 Inch TV for the Full HD resolution to look good.
Sitting any closer than 6 foot then the image from your 65 inch HDTV may not look as good.