Massive FPS gains in rf2 using PCI-e 3.0 x16 with higher end cards!

Discussion in 'General Discussion' started by DrR1pper, Sep 30, 2014.

  1. Harmermania

    Harmermania Registered

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    Wow, Spinelli. The difference between the two is amazing. I'm running a very similar setup (SLI 3D, triples), and those gains are really making me think. I've got a 3570k and a z-68 motherboard, so my SLI setup is limited to PCI-3 x8. I've got 2 780's, overclocked, and rF2 runs really, really good, so I should just ignore this thread and put my wallet far, far away.... but still, I could bump up the reflections and shadows....
     
  2. rogue22

    rogue22 Registered

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    Did it make any difference with FXAA on at that resolution? Just curious.
     
  3. MrPix

    MrPix Registered

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    Yes it does. My Screen is 84" diagonal so my pixels are just over 1mm high.... FXAA gives great AA without making it blurry :)
     
  4. Spinelli

    Spinelli Banned

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    FXAA blurs textures
     
  5. nipzon

    nipzon Registered

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    I find that with FXAA off the game looks very one dimensional with no emersion at all.

    My rf2 setting are
    HDR ON
    FXAA ON
    MULTIVIEW OFF
    V-Zinc off

    5780x1080 on triples
     
  6. Carra

    Carra Registered

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    hi all! i have two way sli of 770 4gb and msi p67a-gd55.. can i upgrade my pci-e 2.0?
     
  7. MrPix

    MrPix Registered

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    I should have said for those with some sort of dysfunctional OCD on literal interpretation... 1mm pixels on my screen seem very jaggy without FXAA, With FXAA on the edges are fractionally blurred very nicely without making the picture blurry over all once the pixels are warped to suit the curved screen... GEEZ!
     
  8. Cracheur

    Cracheur Registered

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    Thanks to Spinelli and the others for the exhaustive tests.
    ouahhh... very interesting results. Even @ "low" FPS you still get around 20% more FPS. It really didn't think this would happen.
    I still intrigues me that rF2 seems to be the only game where you experience such massif improvements...

    I'm very surprised but what do we do about it? Does anybody have a reasonable explanation?

    The big question now goes to ISI: is rF2 optimized to use the additional bandwidth of PCIe-3 or is there maybe some unwanted "overhead" in the GFX-code of rF2 that make PCs with PCIe-2 underperform?
    Maybe this "discovery" has some potentiel to bring general performance improvements.
     
  9. adaptable1

    adaptable1 Registered

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    I never had my PCIe 3.0 x16 configured correctly (cards in the wrong slots for x16 in SLI). I fixed it, verified it was in 3.0 x16 in GPU-z, and got about a 3-5 FPS increase in rF2. Interestingly enough, I got about a 20-30fps increase in Assetto Corsa (DX11?). Still the same challenges with reflections in SLI (need to keep them on low in rF2 for SLI to fully utilize both GPUs). I have two EVGA GTX 680 FTW+ 4GB.
     
  10. Spinelli

    Spinelli Banned

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    Disable SLI, it's screwed in rF2 unless you use 3D where SLI & rF2 scales amazingly (almost 100%).
     
  11. Ari Antero

    Ari Antero Registered

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    There is not many mbo`s and cpu`s which can run 2 way SLI PCIe 3.0@16 x16x16 and systems like that cots loads of money ,gain 2-way SLI PCIe 3.0@16 x16x16 VS 2-way SLI PCIe 3.0@16 x8x8 is probably only 2-3 fps when gaming, not benchmarking.
    2-way SLI has many problems with micro stutters etc. In my opinion 3-way SLI PCIe 3.0@16 x8x8x8 is best solution to gaming. You can buy good 3-way SLI system with less money then system which can run 2-way SLI PCIe 3.0@16 x16x16 and you get much better performance, somehow that 3rd card also removes all micro stutters and many other problems there is when 2-way SLI.
     
  12. DrR1pper

    DrR1pper Registered

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    Why would it be different for benchmarking?
     
  13. Ari Antero

    Ari Antero Registered

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    By going SLI you don't double the number of lanes, you are just splitting them between two cards. When a board has x16 x16, it can actively give one of the cards more bandwidth if it is using more, where as the normal set up is just static x8 x8. So you really won't see much of a performance difference.
    Between those two options, you will not notice a difference when playing "today's" games. In fact, you probably won't notice a difference when playing next years games.

    My advise for you to this topic http://isiforums.net/f/showthread.php/22025-New-system-build-opinions-advice-welcome, is 970 GTX 3-Way SLI or 2-way SLI @16 x8x8 :)
     
    Last edited by a moderator: Oct 10, 2014
  14. DrR1pper

    DrR1pper Registered

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    You misunderstand me Ari. You said "...probably only 2-3 fps when gaming, (but) not benchmarking." This makes it sound like you're saying there's a 2-3 fps gain/difference with SLI when gaming in rf2 but not when benchmarking which i can't understand how come if that's what you're saying.
     
  15. Ari Antero

    Ari Antero Registered

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    Programs like 3DMark Firestrike etc are designed for the sales and advertising showing bigger difference between PCI-e 16@ x16x16 vs PCI-e 16@ x8x8 then it is in reality and if you Benchmark rFactor2 PCI-e 16@ x16x16 vs PCI-e 16@ x8x8 you find out that you fps gain is not more then max 1-2 fps and it is like that in other games too.

    Listen advise from old timer, bee vise don`t waste you money.
     
  16. Spinelli

    Spinelli Banned

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    Last edited by a moderator: Oct 10, 2014
  17. Ari Antero

    Ari Antero Registered

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    Yes there is and gain when single card, SLI totally is different I refer to 2-way SLI not single card and this is why:"By going SLI you don't double the number of lanes, you are just splitting them between two cards".
     
  18. Spinelli

    Spinelli Banned

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    SLI shows the same huge improvements
     
  19. Ari Antero

    Ari Antero Registered

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    It is not read how it works please.
     
  20. Spinelli

    Spinelli Banned

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    Are you kidding me?? I OWN SLI AND I TESTED THIS MYSELF

     

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