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Why does 2560x1440 run at 60fps and 3840x2160 run at 8fps in most games?

Its as the title says
Why does 2560x1440 run at 60fps and 3840x2160 run at 8fps in most games?
Is there a certain reason that it has such a high impact(more then 400%)?

using
Monitor: samsung U28D590 using Displayport
GPU: nvidia 770 GTX
CPU: intel i7-4770@3.40Ghz
RAM: 16GB

Games that dont have this problem:
Skyrim+HD texture mods
Borderlands 2
Minecraft - FTB Infinity

Games that do have this problem:
Trove
Lichdom: Battlemage
Space engineers
3 answers Last reply Best Answer
More about 2560x1440 run 60fps 3840x2160 run 8fps games
  1. Best answer
    Deadwishd said:
    Its as the title says
    Why does 2560x1440 run at 60fps and 3840x2160 run at 8fps in most games?
    Is there a certain reason that it has such a high impact(more then 400%)?

    using
    Monitor: samsung U28D590 using Displayport
    GPU: nvidia 770 GTX
    CPU: intel i7-4770@3.40Ghz
    RAM: 16GB

    Games that dont have this problem:
    Skyrim+HD texture mods
    Borderlands 2
    Minecraft - FTB Infinity

    Games that do have this problem:
    Trove
    Lichdom: Battlemage
    Space engineers



    Running games at higher resolution requires HUGE GPU power, let me just show you as a scale the difference between resolutions...



    4K is 4 times as many pixels as 1080p and over twice 1440p

    Those other games don't have a problem because they are not as graphically intensive as newer games, they're last gen.

    To put it another way, why doesn't the SNES play games in 4k? It's not powerful enough.

    Hope this helps :)
  2. p_nut_uk said:


    4K is 4 times as many pixels as 1080p and over twice 1440p


    If the pixels are less than a 4x increase, he is asking why the frame rate is more than a 4x decrease? Like if you had double the pixels, it would make sense that the frames are halved.
  3. poochiepiano said:
    p_nut_uk said:


    4K is 4 times as many pixels as 1080p and over twice 1440p


    If the pixels are less than a 4x increase, he is asking why the frame rate is more than a 4x decrease? Like if you had double the pixels, it would make sense that the frames are halved.


    VRAM will also come into it, don't ask me why it does because my explanation will be factually incorrect, the higher resolution requires more VRAM and if it isn't in the buffer it has to load the textures etc. from elsewhere (may be factually incorrect) and that will delay the time the GPU takes to draw each frame.

    The 770 comes with 2GB of VRAM, that's not enough for 4k really, barely enough for 1440p.
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