The current state of Crossfire (smoothness)?

Discussion in 'Videocards - AMD Radeon' started by drac, Oct 3, 2013.

  1. Deathchild

    Deathchild Ancient Guru

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    I'm gonna do 8x8 on gen3. Emmity what monitor you got btw?
     
  2. Enmity

    Enmity Maha Guru

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    I've got the Qnix QX2710LED. The stand is wobbly as **** but the panel is beautiful. Love it.
     
  3. drac

    drac Ancient Guru

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    Thought this was added in a recent driver. Your referring to hardware frame pacing I'm guessing?
     
  4. Enmity

    Enmity Maha Guru

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    it only needs framepacing for ultra high resolutions, I think 2560x1600 is the highest rez AMD supports as of the moment but will add support for 4k shortly.
     

  5. drac

    drac Ancient Guru

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    So by the looks of it the 290x will actually have a hardware solution for frame pacing. Seen many mentions of this but nothing concrete though. If anyone has a link, I'd appreciate it.
     
  6. Enmity

    Enmity Maha Guru

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    I hope the 290X is worth it. I like the look of it and depending on the performance of it I may look at selling the 7970's for 2x 290X's...but this time around i'll probably get DcII's instead of the vapor X from sapphire, these aren't as quiet as I had hoped.
     
  7. k3vst3r

    k3vst3r Ancient Guru

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    Last edited: Oct 9, 2013
  8. ---TK---

    ---TK--- Ancient Guru

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    ^^ I was comparing single card only.
     
  9. ceesay

    ceesay Master Guru

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    going to get 2 290Xs of if the cf is good...?? got 2x780s sli runs well but ill put 2 290xs in to other rig i know bit mad thats me.....lol
     
  10. Dymblos

    Dymblos Member

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    this apply to 7990?
     

  11. yasamoka

    yasamoka Ancient Guru

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    It applies especially to the 7990, as that card is the card that mostly relies on CrossFire working properly to sell.

    You don't need to use VSync + FPS cap to make CrossFire smooth anymore. It's smooth even with no VSync and no FPS cap after the frame-pacing drivers.

    VSync + FPS cap will always be smoother than varying FPS due to the nature of synching (hence VSync) FPS with refresh rate exactly. But previously, FPS cap was needed to avoid microstutter, as CrossFire microstutter happened when both GPUs were trying to crank out frames as fast as possible. While FPS cap does not add as much latency as VSync, it also introduces a tear line as it's not in perfect sync with the monitor. So it's usually VSync + FPS cap. Why not VSync only? FPS cap reduces VSync latency and sometimes alleviates stutter in certain engines / games.
     
  12. Dymblos

    Dymblos Member

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    FPS Cap? that is a program?

    Vsync should cap the fps to 60fps (60hz monitor) o_O
     
  13. sykozis

    sykozis Ancient Guru

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    different methods for capping the framerate. Vsync attempts to "cap" the framerate at the monitor's refresh rate by synchronizing the frame output to the display refresh rate. So, if the refresh rate is 60hz, you get 60fps. If the refresh rate is 75hz, you get 75fps and so on. FPS Cap attempts to lock the frame output to whatever framerate is specified regardless of the monitor's refresh rate.
     
  14. Deathchild

    Deathchild Ancient Guru

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    You can use RivaTunerStatisticsServerBlablaBLa as fps cap.
     

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