[abreis]

4K at 15" is 294 dpi. I'm very surprised to hear that you can see pixels at that density at a normal laptop screen viewing distance.

My laptop is 'only' at 226dpi (16") and I can't see pixels unless I bring my nose to the screen.

[adrusi]

I think different people mean different things by "see the pixels." I can't imagine being able to see individual pixels on a 15" 4k display at laptop distances, but I can imagine being able to notice minor distortions in the outlines of text, or more discomfort than necessary when reading small text, as a result of lower pixel densities. That could be reasonably described as seeing the pixels.

[read_if_gay_]

My iPhone has ~320dpi and I can't see pixels at non-ridculous viewing distances. I don't know what GP's viewing distance habits or eyes are like but for me, considering laptop viewing distance is probably like twice that of smartphones, I can't imagine a 15" 4K laptop being anything but overkill.