In article ,
Whisky-dave says...

Have you considered that not all 4k screens are the same ?
A notebook is usualy a cutdown laptop, the screens are usually really crappy.
Making a 4k one isn;t that difficult geting colour and angle of view correct is more of a challenge in a cheap display.
If yuo can take this notobook to an apple store and compare side by side with a retina macbook you might see a differnce .

Is there any 15" notebook PC with a good 4K screen?
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Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
https://tech.groups.yahoo.com/group/MyOlympus/
https://myolympus.org/ photo sharing site