4K and Downsampling??

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TUX76
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4K and Downsampling??

#1 Post by TUX76 » 26 Nov 2020 23:08

Hello. A technical question. I've had a 4K monitor for a month. A new graphics card is coming next year.
The downsampling menu. Does it have any function at all with a 4K resolution. Does downsampling even make sense at 4K?
I don't see any difference between 100%, 150, 200, 400.
There was a clear difference on my old FullHD monitor.
Thank you for your help
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xXCARL1992Xx
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Re: 4K and Downsampling??

#2 Post by xXCARL1992Xx » 26 Nov 2020 23:14

if you new monitor is the same size or a bit larger but only a 1080p to 4k upgrade you dont really need downsampling

if the screen size is the same you will have 4x the pixels per inch, so the quality of the image should already be better
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TUX76
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Re: 4K and Downsampling??

#3 Post by TUX76 » 27 Nov 2020 16:55

Hello ... Inquiry ... Is 8K downsampling on a 4K monitor technically possible.
If I set the setting to 400. He then renders in 8K ... and downsamples to 4K?
Theoretically.
400% on 8K monitor. It would be 16K rendering ... downsampling to 8K.
Or is there a limit.
Thank you...
----------------------------------------------------------------------------------------------------------------------
Hallo...Nachfrage… Ist 8K Downsampling auf einem 4K Monitor technisch Möglich.
Wenn ich die Einstellung auf 400 setzen würde. Renderd er dann in 8K...und downsampelt auf 4K??
Theoretisch.
400% auf 8K Monitor. Es wäre dann 16K Rendering...downsampling auf 8K.
Oder gibt es da ein Limit.
Danke…

Some newbie driver
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Re: 4K and Downsampling??

#4 Post by Some newbie driver » 27 Nov 2020 17:03

Theoretically yes, it will be exactly what you will be doing

Point is, as xXCARL1992Xx said you, a 4K native monitor of usual desktop sized (around 32" for that resolution) already have enough resolution and pixel density to create an smooth image without most of the jagged edges that the image of this games show at lower resolutions (due the lack of a good AA system in the game). To avoid those jagged edges is the only purpose of the downsampling thus pretty useless if the 4K monitor already gives you a good visual output. Downscale at that native resolution will serve only to strain your GPU and to heat your room (and probably to lose average FPS and even suffer stutters too).

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plykkegaard
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Re: 4K and Downsampling??

#5 Post by plykkegaard » 27 Nov 2020 18:07

TUX76 wrote:
27 Nov 2020 16:55
.. Is 8K downsampling on a 4K monitor technically possible.
Yes 4K and 400% scaling is possible but puts a bit of a strain on a GTX 1080 TI with a 21:9 screen (5120x1440)
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TUX76
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Re: 4K and Downsampling??

#6 Post by TUX76 » 27 Nov 2020 19:55

Hello ... I play ATS and ETS in 4K ... 100%
I only ask because I don't see any difference between 4K ... 100% and 4K 200..or 400%.
I thought this might be a bug.
Or there is a downsampling limit.
I have a 5 year old nvidia 1070.
With the performance of the upcoming graphics cards, 4K at 400% and 120Hz would theoretically be possible. I don't use MSAA.
I think the MSAA destroys the downsampling effect.
Thank you. All questions answered.

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