Waiting for the 4k iMac

[Serban]

I already having the 5k, but i wait for the next year 21.5" 4k iMac
I wonder what gpu will be? still amd or they go nvidia 950M etc?
probably standard Fusion drive or 256 SSD
2 thunderbolt 2 ports
8gb Ram standard
and probably broadwell cpu

 

[driftless]

Why?

Why would there be a 4K version when Apple has just raised the bar?

 

[yjchua95]

Why?

Why would there be a 4K version when Apple has just raised the bar?

Because 5K was 2560x1440 in HiDPI.

4K would be 1920x1080 in HiDPI.

Since the 21.5" is 1080p, retina-fying it by doubling the pixel count in both directions would be 3840x2160.

Retina-fying is always a non-retina resolution that has its pixel count doubled in both directions.

 

[brand]

Retina-fying is always a non-retina resolution that has its pixel count doubled in both directions.

Technically that is not true. The iPhone 6 Plus renders its display at triple the number of pixels in each direction, before down-sampling to a 1080P resolution.

There is no standard that says that the resolution has to double, triple, or even quadruple the number of pixels to make something retina. It has been convenient do it like that so as to prevent fragmentation but not something that has to "always" be done that way.

 

[yjchua95]

Technically that is not true. The iPhone 6 Plus renders its display at triple the number of pixels in each direction, before down-sampling to a 1080P resolution.

There is no standard that says that the resolution has to double, triple, or even quadruple the number of pixels to make something retina. It has been convenient do it like that so as to prevent fragmentation but not something that has to "always" be done that way.

The iPhone 6 Plus (2208x1242) is a different story, that's Retina HD.

I agree that pixel doubling/tripling/quadrupling was done out of convenience for developers to design the UI.