It depends on how far away you sit from your television. If you are sitting 10 feet from the TV, you can't tell the difference from 1080p and 4K. if you are 6ft away, you can definitely see the difference. This is my first 4K television, and I've had it a couple of months now in my living room. The TV i had before this one is now in my bedroom. It is 1080p. When I watch the one in my bedroom now, I notice pixels... I had simply never seen them before because I got used to them I guess, but watching my 4k tv enough has started making the screen pixels really stand out again on my regular 1080p 55 inch TV. It seems even watching 720p and 1080p content on a 4k tv looks better because you can't see any individual pixels of the screen, and I'm not really noticing any blurry content. I guess that would mean this tv has a good upscaler? don't know the tech details of all that.