Possible Microstuttering/Inconsistent Frame Rate Fix

Discussion in 'Videocards - AMD Radeon Drivers Section' started by Sevenz, Mar 23, 2010.

  1. Sevenz

    Sevenz Active Member

    Messages:
    93
    Likes Received:
    0
    GPU:
    ATI HD4870 512MB
    I'm interested to know if anyone has heard of or tried this. I've read of people experiencing "microstuttering" so here is a possible fix:

    From http://forum.cakewalk.com/tm.aspx?m=1861804:
    There is an alternate version here: http://forum.cakewalk.com/fb.ashx?m=1963569
    This solution has the advantage of changing core parking on the fly, without needing to edit the registry again or rebooting, just by switching the power plan.

    Has anyone tried this?
     
  2. evilfury

    evilfury Master Guru

    Messages:
    542
    Likes Received:
    0
    GPU:
    MSI 1070 GTX Gaming X
    Be sure before doing this that you had imported original registry settings.

    I have no idea if i did this in right way. Actually fps are indeed more stable. Or its just placebo? :)
     
    Last edited: Mar 23, 2010
  3. KodY

    KodY Master Guru

    Messages:
    627
    Likes Received:
    0
    GPU:
    Sapphire 280X Vapor-X
    I've only heard of core parking when talking about the windows servers and this little document would also state this

    While there could be some affect while using applications (in this example the sonar music studio) I doubt it affects gaming in any way.
    But I guess thats hard to bench or display in some way

    I guess this is no ATI-driver related thing, so maybe wrong section to talk about this
     
    Last edited: Mar 23, 2010
  4. AbjectBlitz

    AbjectBlitz Ancient Guru

    Messages:
    3,462
    Likes Received:
    2
    GPU:
    R390 1200/1720
    Interesting, but until I see some benches to prove it I'm not messing with it.
     

  5. WhiteLightning

    WhiteLightning Don Illuminati Staff Member

    Messages:
    29,360
    Likes Received:
    2,182
    GPU:
    GTX1070 iChillx4
    +1 benches pls :)
     
  6. MerolaC

    MerolaC Ancient Guru

    Messages:
    3,740
    Likes Received:
    635
    GPU:
    MSI 5600XT G. MX
    Well, I've modified the registry and GTA IV works with a lot less stutter and slightly more stable FPS
    This is awesome :D
    Thank you!!!
     
  7. Elite Bushido™

    Elite Bushido™ Maha Guru

    Messages:
    1,133
    Likes Received:
    0
    GPU:
    GTX 480 SLI
    yea... benchies pls
     
  8. vurt

    vurt Master Guru

    Messages:
    266
    Likes Received:
    4
    GPU:
    RTX 3090
    Benchies would be nice, the placebo effect isnt really that interesting ;)
     
  9. nascasho

    nascasho Master Guru

    Messages:
    403
    Likes Received:
    0
    GPU:
    GV-N670OC-2GD @ 1250Mhz
    Calling placebo effect on this.
     
  10. chinobino

    chinobino Maha Guru

    Messages:
    1,109
    Likes Received:
    60
    GPU:
    ASUS 2070 Mini OC
    Core parking is a feature of i5/i7 CPU's.

    Core 2 Duo's do not have it.
     

  11. MerolaC

    MerolaC Ancient Guru

    Messages:
    3,740
    Likes Received:
    635
    GPU:
    MSI 5600XT G. MX
    Well, so it is a placebo effect, i feel it VERY different....
     
  12. Scerate

    Scerate Maha Guru

    Messages:
    1,042
    Likes Received:
    0
    GPU:
    2080@2.1/1070N@2.0
    don't even know that core parking is on my i7 i never seen or noticed it anyway, without or with OC same with HT on or off so this fix isn't for me but a friend of mine have spoken about microstuttering with his i7 920 i will give him that link and he should check it out for me.
     
  13. Zareph

    Zareph Ancient Guru

    Messages:
    2,626
    Likes Received:
    0
    GPU:
    Sapphire NITRO+ RX480 4GB
    Definitely, until I see benchmarks proving it otherwise.
     
  14. ATI DOMINATOR

    ATI DOMINATOR Member

    Messages:
    31
    Likes Received:
    0
    GPU:
    2xSapphire 5850 CF
    ı tried this,1 FPS increase in unigine benchmark and 1 FPS with Warhead benchmark...

    Actually i did not expect any performance increase of course,aim of this fix to decrease stuttering and unexpected performance drops,so after benchmark i tried with Red Faction Guerilla which cause huge performance drops during explosions and i can say that it fixed this,now i'm getting more smooth explosions and there is no unexpected frame drops wtih 1920-1080 8XMSAA 16XAF all settings on high with directx10 effects.

    But unfortunately this game is so bad optimised for the multi-gpu settings,whenever i drive a car,it stutters although Fraps showing 60 FPS with vsync on.:paranoid:
     
  15. chinobino

    chinobino Maha Guru

    Messages:
    1,109
    Likes Received:
    60
    GPU:
    ASUS 2070 Mini OC
    From the Intel white papers;

    Core 2 Duo's use C0 & C1 and as each CPU core is not able to go into any C-state independent of the state of the other cores they do not support Core Parking.

    Xeon's based on the 45nm Core 2 Duo architecture do not have Core Parking either, instead they have DBS (Demand Based Switching).

    Nehalem based CPU's use the different C-states depending on model and it is difficult to determine which models use Core Parking. I think it's pretty safe to say all Nehalem Xeons (Lynnfield, Bloomfield, Gainestown) and also Westmere Xeons (Beckton, Gulftown) will use it by default with Windows Server 2008 (or Windows 7).

    The real question is which desktop CPU's support Core Parking?

    Once we know this the real testing can begin.
     

  16. blesner

    blesner Ancient Guru

    Messages:
    2,715
    Likes Received:
    4
    GPU:
    MSI Nvidia GTX 690
    Still no benchmarks ???!!!

    I aint trying it untill I can get confirmation that this actully works.'
     
  17. Sevenz

    Sevenz Active Member

    Messages:
    93
    Likes Received:
    0
    GPU:
    ATI HD4870 512MB
    It's unclear if benchmarks would prove anything, because an increase in smoothness doesn't mean a higher fps number when all is done. Besides, ATI DOMINATOR already reported "1 FPS increase in unigine benchmark and 1 FPS with Warhead benchmark", and MerolaC and others like it.

    I'm not a benchmark guy so I can't do it but everyone would like to see some more numbers. Anyway, to me it's a way more interesting experiment than "which is better, 10.3 or 10.3a" for the fiftieth time.
     
  18. Scerate

    Scerate Maha Guru

    Messages:
    1,042
    Likes Received:
    0
    GPU:
    2080@2.1/1070N@2.0
    Ok i given the link to a friend of mine and what he said is that it was more or less placebo. His 3DMark Points 06 & Vantage stayed the same but Warhead went about 1fps up, Mass Effect 1&2 was same like before then BFBC2 he said his average fps after 30mins of MP raised up from 49 to 51 (isn't a real comparison imho cause MP is not evertime the same on screen like in an bench) but he said that he felt that WoW is running a lot smoother in Dalaran like before but not a FPS Change directly only that there are no hitchups while traveling around. Yeah that was everything at least what he said.

    Just 4 info - His rig:

    i7 920 @ 3.2 Ghz HT off Turbo off, C-states on
    Asus P6T SE
    6GB Kingston HyperX 1800Mhz @ dunno
    XFX Radeon 5850 @ stock
    Windows 7 x64 Home Premium
     
  19. blesner

    blesner Ancient Guru

    Messages:
    2,715
    Likes Received:
    4
    GPU:
    MSI Nvidia GTX 690
    Yep dont know about this but this dam ATI microstutter is enough to make me buy the less powerfull GTX480,
     
  20. GC_PaNzerFIN

    GC_PaNzerFIN Maha Guru

    Messages:
    1,045
    Likes Received:
    0
    GPU:
    EVGA GTX 580 + AC Xtreme
    I call placebo, and Unreal2004's post supports placebo.

    Microstuttering has nothing to do with CPUs. :)
     

Share This Page