Certainly with HD sources the UE65HU7500 manages to produce pictures that look more detailed and dense than HD without exaggerating source noise, which is already a great result.
http://www.trustedreviews.com/samsung-ue65hu7500-review-picture-quality-page-2#tr-review-summary
More importantly, the upscaling from HD to UHD is handled very well, with hi-def channels and Blu-ray clearly benefitting from the extra pixels.
http://www.t3.com/reviews/samsung-65hu7500-review/Samsung-65HU7500-Picture-quality-Verdict
The HD picture is as crisp and detailed as we could reasonably expect, and on a par with some of the better Full HD TVs we’ve seen.
http://www.whathifi.com/samsung/ue65hu7500/review
HD content looked nothing short of stunning on the Samsung UE55HU7500 whose convincing blacks, rich contrast, and above all absence of visible pixel grid even from up close contributed to a truly silky image. The wow factor was further accentuated by the display’s size-zero bezel which created a quite surreal illusion of the panel floating in mid-air. When paired with a reference Blu-ray transfer such as Pacific Rim, the 55HU7500 was an utter sight to behold..
http://www.hdtvtest.co.uk/news/ue55hu7500-201405083761.htm
Τα αγγλικά μου δεν είναι και τα καλύτερα αλλα στα reviews λένε ότι τουλάχιστο δεν υστερεί... :huh2::hmmmm2: