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    2014 Lenovo Y50 4K UHD display thread

    Discussion in 'Lenovo' started by jl0329, Mar 17, 2014.

  1. jl0329

    jl0329 Notebook Guru

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  2. cycro27

    cycro27 Notebook Guru

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  3. kitzuki

    kitzuki Notebook Consultant

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  4. jl0329

    jl0329 Notebook Guru

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    Thanks man! That's a massive thread! Took me 2 hours to read through it.
     
  5. jl0329

    jl0329 Notebook Guru

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    Mod: please delete this thread. Thanks!
     
  6. octiceps

    octiceps Nimrod

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    You read a forum thread for 2 FREAKIN' HOURS?!?

    o_O
     
  7. BenTheGuyDude

    BenTheGuyDude Newbie

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    So I have the y50 with the 4k display, and I was wondering if anyone knows why 2560x1440 isn't a resolution option? Because I like to game, and at 4k most games run on the slowish side, but at 1080p an 2k it runs the games at 50+ fps all the time, so I would like to try a higher resolution without going straight to 4k, but I can't. If any one knows or can help it would be much appreciated.


    Sent from my iPhone using Tapatalk
     
  8. octiceps

    octiceps Nimrod

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    Create a custom resolution in Nvidia or Intel control panel.
     
  9. BenTheGuyDude

    BenTheGuyDude Newbie

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    I did try that, but that didn't work, an looking that up, it's a whole new issue together, so I'll just have to wait for that issue to be solved, then hopefully that will fix my issue. I just don't know why 1440p isn't supported out if the box.


    Sent from my iPhone using Tapatalk
     
  10. octiceps

    octiceps Nimrod

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    1440p will look super blurry anyway because of the interpolation. Obviously 4K looks best, but if you must go lower than native then stick to 1080p and 720p.
     
  11. roydok

    roydok Notebook Guru

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    Very Low Refresh Rate of 48 Hz. :cry:
     
  12. kraken42

    kraken42 Notebook Guru

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    Can someone explain why the 48 Hz refresh rate is such a big deal and if it will affect normal usage? As far as I know, you will have screen tearing at many resolutions because 48 has less factors, but with Vsync on it won't exceed 48 FPS and at FHD many games can be played at a constant 48 FPS.

    Also, I really don't understand how "FPS games are unplayable at anything below 60 FPS" that many people appear to be claiming; I play games at 25 - 30 frames per second and I'm only annoyed when the FPS dips to below 20; as long as it's stable I don't have a problem. Keep in mind that a movie runs at 24 FPS and no one complains that movies have problems with stuff being "not smooth".
     
  13. octiceps

    octiceps Nimrod

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    Yes, even dragging windows around in Explorer will look more laggy/jittery at 48 Hz. In games, you will get more tearing with V-Sync off or more input lag and judder with V-Sync on compared to 60 Hz. In an online FPS, everyone with 60+ Hz will have a competitive advantage over you because aiming, tracking enemies, and movement will be more responsive and fluid for them and they will have better hitreg (more on this below).

    At 48 FPS, your hitreg will be worse in games with high tick rates due to the relationship between tick rate and client frame rate. Source Engine games, for instance, operate at up to 128 tick (CS:GO) and 66 tick except L4D/L4D2 which are 30 tick. This means that at 48 FPS, you will be sending and receiving fewer updates per second to and from the server compared to 60 FPS (or 120/144 FPS), meaning worse hitreg. This is why all competitive CS players play on 120/144 Hz monitors and turn down the graphics so they can maintain a constant 120/144 FPS.

    Obviously, for games with low tick rates, e.g. BF4, 48 FPS won't matter as far as hitreg is concerned, but the caveats regarding smoothness and controller responsiveness still apply.

    Games and movies don't work the same way so you can't compare them. Games are rendered frame-by-frame, so smoothness is directly tied to frame rate, added motion blur or not. Plus movies are non-interactive, while in games you have direct control of the camera, so a low frame rate will always suffer from lack of input responsiveness and choppiness.
     
    roydok and Qrylor like this.
  14. OfficerVajardian

    OfficerVajardian Notebook Enthusiast

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    If I remembered, correctly, this guy on the Lenovo Y50 Owners thread uninstalled the Intel HD 4600 driver and the screen turned to 60 hz. When he reinstalled it, it turned back to 48 hz.
     
  15. arash_illusive

    arash_illusive Notebook Enthusiast

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    Does anyone knows if I can change the UHD screen with an IPS FHD just like the FHD version of Y50? I mean does this cause any hardware / driver issue due to different resolution?
     
  16. l-16b

    l-16b Notebook Guru

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    So after reading this thread people think poorly of the 4k screen too? Am on the verge of buying a Y50 but all the complaints on the screen aren't sitting well. Was hoping the 4k screen for just a little more $ would stop the complaints but not looking like that's the case...
     
  17. arash_illusive

    arash_illusive Notebook Enthusiast

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    Well, it depend on what are you planing to do. I am a illustrator / animator so the yellow issue of 4K screen bothers me. You would not notice it though. And you can make it better with color profiles. But still the yellow is off.
     
  18. gordan

    gordan Notebook Enthusiast

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    Two points:
    1) If you think you are going to get more than 48fps rendered at 3840x2160 on a Maxwell 860M (essentially the same as 750Ti), you are dreaming.
    2) I'm not convinced that most of the perceived difference between 48fps and 60fps is much more than a placebo effect. PAL DVDs are 25fps, and NTSC DVDs are 30fps. Most movies are still shot at 24fps, yet you don't hear complaints about fast paced action sequences looking choppy. You might want to read through this paragraph: Frame rate - Wikipedia, the free encyclopedia.

    The problem is the bandwidth of the interface, not the panel itself. You can get 60Hz at lower resolutions.

    It's not only the colours that are the problem, everything that is not black and white looks horribly grainy because the sub-pixel density is 1/2 lower than the resolution implies. Instead of getting R, G, and B subpixels for each pixel, you are getting them between two adjecent pixels (with an extra white pixel thrown in to improve brightness and cover up the full extent of how bad the screen actually is). The Samsung screen Lenovo used is "pentile RGBW". Stay away from those, they are eggregiously bad. Rather than 4K, they should be referred to as f4Ke.

    Get a Toshiba P50-B instead, that has a proper RGB 3840x2160 panel made by Sharp.

    Unfortunately, the Sharp panel and Samsung panel have different pin pitch on their LVDS/eDP connectors, so an adapter or a replacement cable is required to make it work. Unfortunately, I have not been able to find a suitable component to make this possible yet.
     
    Last edited: Dec 28, 2014
  19. sidhaarth

    sidhaarth Newbie

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    if i lower my resolution to 1080p will i be able to get 60hz refresh rate?