1080p gaming on 4K panel

Discussion in '2015+ Alienware 13 / 15 / 17' started by chelski26, Jul 28, 2016.

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  1. mertymen2010

    mertymen2010 Notebook Consultant

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    I also remember when I first got the 4k screen, I made a point of setting far cry 4 at 1080p just to see if there was any difference before playing any game in 4k and i remember thinking, "oh wow there is no difference"
     
  2. chelski26

    chelski26 Newbie

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    what setting are you on when gaming in 4K ?

    some people also says that medium in 4K looks equivalent or even better than high in 1080p, is that true ?
     
  3. nickbarbs

    nickbarbs Notebook Deity

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    we all have different standards, but clearly there must be upscaling going on with this 4k panel running 1080p, so there will be a difference. Please dont delude yourselves into thinking otherwise.
    I have had both - I'm just sharing my views - I categorically did not find games impressive on the 4k panel running at 1080p, they were blurry and blocky with the upscaling - the typical upscaling effect. This is fact.

    I'm really happy with a 1080p panel (granted I needed to upgrade it myself) with 300 nits and 0 light bleed. The 980M also doesn't suffer running games at native and 1080p is a fine resolution for a 15 inch machine.

    In a few years when mobile GPUs can run 4k with no problem i'll be back to 4k.

    I'm just inputting in this thread - I saw a clear and obvious difference in gaming and for the scaling is noticeable plain as day. Please remember 4k buyers will also show some bias. Bottom line is - if it works for you then keep it - it didnt work for me and i went through the trouble of changing machines.
     
  4. mertymen2010

    mertymen2010 Notebook Consultant

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    Having settings on medium really doesnt make much difference. I have everything on high. Its the resoultion that makes the difference to fps.
     
  5. nzgeek

    nzgeek Notebook Evangelist

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    Just because there's upscaling, it doesn't mean the picture has to become blurry.

    In general, upscaling starts by dividing the size of the screen by the size of the image. This tells you how many times bigger the image needs to be too fill the screen. For example, if you were displaying a 720p image on a 1080p screen, each pixel would need to be (1080 / 720 =) 1.5x taller and (1920 / 1280 =) 1.5x wider. If these numbers were different and you wanted to keep the aspect ratio, you'd go for the smaller value.

    The image pixels are then enlarged according to this multiplier and mapped onto screen pixels. Depending on the multiplier, there will probably be places where an enlarged image pixel only covers part of a screen pixel. That screen pixel will therefore contain more than one partial image pixel. The screen has to decide what to do with that "hybrid" pixel. It could choose the dominant color (causing distortion) or a weighted average of the partial pixels (effectively a form of antialiasing, causing fuzziness).

    For certain combinations of screen size and image size, the multiplier becomes a whole number. The whole number multiplier means that each image pixel maps to complete screen pixels. There are no "hybrid" pixels to deal with, so no fuzziness or distortion. With a 4K (3840 x 2160) screen, you get these exact multiples when displaying a 1080p (1920 x 1080, 2x multiplier) or 720p (1280 x 720, 3x multiplier) image.

    If you're absolutely sure that you can see blurring, I can only think that either:
    1. You've got an older panel, and the newer ones do a better job.
    2. Your panel has issues and needs to be replaced.
    3. Something about your display settings is causing the issue.
    4. You're setting fuzziness because you expect it to be there, even though it may not exist.
    (I'm not suggesting that the last one is true, just that it's a slim possibility.)
     
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  6. Punisher5.0

    Punisher5.0 Notebook Geek

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  7. Mickbt26

    Mickbt26 Notebook Evangelist

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    That is because that image is 1920x1080 in size. If the image was 3840x2160 with 1080 scaled you would see the difference with your eyes. but this cannot be done in game because a screenshot will only capture the games resolution. you would need an external camera to capture the soft, scaled image.

    Try this if you have a 4k screen. Download the above photo and use an image viewer to view it at 1920 x1080, then zoom it to the full screen and you will see it go softer. This is the blurring we are talking about.

    Or you could set windows to a resolution of 1920x1080 scaled to full screen on the 4k . This will give the same effect.
     
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  8. Luke Taylor

    Luke Taylor Notebook Consultant

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    Sorry I can't agree, being x4 1080 4k is the same scale.

    1080 on a 4k panel is not blurry, definitely not!

    I too play doom and its sharp as ****. I have tried 1080 2k and 4k all as sharp.

    Sent from my SM-G935F using Tapatalk
     
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  9. Punisher5.0

    Punisher5.0 Notebook Geek

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    It looks even better than that in real life because it's not compressed into a jpeg. I hear what you are saying but I'm telling you that there is no degradation with my monitor in 1080.
     
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  10. Luke Taylor

    Luke Taylor Notebook Consultant

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    Mines the same

    Sent from my SM-G935F using Tapatalk
     
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