Reply to post:

'Daddy, what's a Blu-ray disc?'

Down not across Silver badge

There are 2 competing '4K' sizes - one which is 4K pixels wide (4096x2160) and one which is double 1080p in either dimension (3840x2160), but not quite 4K pixels wide.

And your normal punter will be none the wiser bit like back when HDTV was the new thing and everything was marketed as HD until lesser resolution had to be eventually marketed as "HD Ready". Admittedly 3840x2160 will probably suit the average punter just fine it being 16:9 that they're used to.

Makes more of a difference for any of us who might use the screen as computer display.

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