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The truth about Flip-queue 0?

Discussion in 'Videocards - AMD Radeon Drivers Section' started by Tastic, Jul 16, 2012.

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  1. Tastic

    Tastic Member

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    Hello peeps,

    I am looking for the truth behind 'Flip-queue 0' for ATI/AMD video cards. This may come off as a silly question as the option clearly states 0 pre-rendered frames. However, I have heard many trains of thought regarding this matter.

    For one, when you set the flip queue 0 in ati tray tools or radeonpro, does your video card truly render 0 frames, or does it resort to driver default of 3 rendered frames? If not, what drivers are they not 0, and what do they default to if 0 is selected?

    I have been reading and hearing about how the setting of 0 for pre-rendered frames actually defaults to 3 in many scenarios. I even read a benchmark test review that their results confirm that by setting your card to 0 pre-rendered frames, your card resorts to its default setting, which is 3 pre-rendered frames. So, a selection of 1 or 2 will actually render less frames than a setting of 0.

    Here's one example I'm talking about: http://forums.laptopvideo2go.com/top...es-benchmarks/

    I have tested pre-rendered (FLIP-QUEUE) frames from 0-3, and I'm having trouble coming to a definitive conclusion about whether a setting of 0 or 1 renders less frames. I play Quake Live, so finding the setting that truly renders the least amount of frames is ideal. I have a fairly fast system so my system should handle the least amount of rendering possible. I want the configuration that offers the LEAST amount of input lag. I can't find many definitive sources about whether pre-rendered frames 0 actually renders 0 frames, or if it resorts to driver defaults of 3. I've heard angles from both sides and I'd like to know the truth behind it .

    Current configuration:

    i5-2500k
    Sapphire HD 7850
    16gb 1333 Ram
    SSD
    Asus VG236H 120hz LCD

    Basic video settings:

    I've had best results with CCC 12.4 and 12.3 driver set. Not so sure about 12.7
    Pre-rendered (FLIP-QUEUE) frames set to 0 or 1 w/ RADEONPRO
    GPU Scaling off
    Play games at native resolution (1920 x 1080) even though I prefer lesser resolutions
    Most filtering settings turned off or to high performance
    120hz refresh rate

    If anyone can shed any light on this subject I would appreciate it, immensely!

    Discuss.

    EDIT:

    I did find an interesting comment in the ESR forum @ http://www.esreality.com/post/228304...ndered-frames/

    Here's the comment:

    "Fact is, you have to "pre-render" a single frame before displaying. So you're suggesting that this option is "how many _more_ frames to pre-render" and 1 is keeping a single frame always in the buffer while previous one is displayed and next one is being rendered? Does it do it even with vsync off? I was under impression this setting is for vsync users..."

    This makes sense, but is it true? Does your video-card have to pre-render at least 1 frame before displaying on your screen? Are video-cards not capable of rendering real-time and displaying the image on your screen as it's rendering? I suspect that if this is true, your system has to be fairly fast to handle real-time rendering.

    -T
     
    Last edited: Jul 16, 2012
  2. zarker

    zarker Member

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    I thought flip-queue 0 just side-stepped the queue and forced an application wait for the graphics card to complete the last render instead of buffering it?

    I always used to use a flip-queue of 0 or 1 for driving games (Codemasters mostly) as any kind of queue seemed to give steering lag.

    of course, i could be wrong....
     
  3. Pill Monster

    Pill Monster Banned

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    Please don't create duplicate threads thx.
     
  4. Tastic

    Tastic Member

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    Sorry.

    I have two separate video cards with the same question, AMD & Nvidia, and wanted to point the question to its proper thread. The thread in the general ati video card section was a mistake, but haven't figured out how to delete it.

    Thanks.

    -T
     

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