Native 4K or Checkerboard "uprendered" 4k

[Slimebeast]

Peh said:

Slimebeast said:

"rendered with god's approved gaming device" lol

Ahh, cool. You have a GTX 1070 and game on a 4K monitor!

What I like about 4K is that old 1080p games scale perfectly. But having been accostomed to 4K, how do you feel about 1080p games on your monitor? Does it feel ugly?

1080p is kind of unplayable on a 4k monitor. It looks awfully blurry.

Halflife 2 in 4k maxxed out AA

http://www.pic-upload.de/view-31674270/20160911_163611.jpg.html

close up:

http://www.pic-upload.de/view-31674283/20160911_163626.jpg.html

Halflife 2 in 1080 maxxed out AA

http://www.pic-upload.de/view-31674295/20160911_163659.jpg.html

close up:

http://www.pic-upload.de/view-31674304/20160911_163720.jpg.html

 

How can it look blurry? I understand it's blurry if the monitor upscales from 1080p to 4K (and uses an upscaling technique similar to those you linked to), but can't you prevent it from upscaling so that it remains the original sharp 1080p image?

Those pics don't work, except for one.