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Stable benchmarking OC?

Discussion in 'AMD / ATI' started by Champ, Aug 15, 2008.

  1. Champ

    Champ

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    I'm looking for a stable OC for benchmarking. I can't get the Fur stability test to run at anything other than stock. Any tips are welcomed.
     
  2. SerenadeRB

    SerenadeRB New Member

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    Have you tried running the CCC overdrive?
    Do you have your fans running at stock speeds?
    The HD 4850 gets VERY hot at stock fan speeds (60-80*)
     
  3. Champ

    Champ

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    I use CCC and that sets it, but it doesn't seem stable. I have my fan wide open. I think I have a driver problem because it is also shutting off at stock clocks doing the benchmark and my 3D screen saver.
     
  4. SerenadeRB

    SerenadeRB New Member

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    Can I have your temps @ idle/stressed?
    If you haven't done so, change your fan speeds:
    In Windows Xp go to:
    C:\Documents and Settings\(Your User Name)\Local Settings\Application Data\ATI\ACE
    or in Vista
    C:\Users\(User Name)\AppData\Local\ATI\ACE

    and right-click a profile and hit "Edit"

    find:
    <Feature name="FanSpeedProtocol_0">
    <Property name="FanSpeedProtocolProperty" value="Percent" />
    </Feature>
    <Feature name="FanSpeedAlgorithm_0">
    <Property name="FanSpeedAlgorithm" value="Automatic" />
    </Feature>
    <Feature name="FanSpeedRPMTarget_0">
    <Property name="Want" value="0" />
    </Feature>
    <Feature name="FanSpeedPercentTarget_0">
    <Property name="Want" value="25" />

    And make it

    <Feature name="FanSpeedProtocol_0">
    <Property name="FanSpeedProtocolProperty" value="Percent" />
    </Feature>
    <Feature name="FanSpeedAlgorithm_0">
    <Property name="FanSpeedAlgorithm" value="Manual" />
    </Feature>
    <Feature name="FanSpeedRPMTarget_0">
    <Property name="Want" value="0" />
    </Feature>
    <Feature name="FanSpeedPercentTarget_0">
    <Property name="Want" value="100" />

    and now test it out. Then you can lower the
    <Property name="Want" value="100" />
    to any number from 0-100 untill you find a noise/performance compromise :)
    ~Evangeline
     
  5. FR@NK

    FR@NK

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    Furmark will really heat up your card. Try running GPU-z while running furmark and look at the temps from GPU-z.

    I've had one of my HD4870s oced stable in all the games i play, but it crashes after afew mins of furmark. It normally gets +20C hotter running furmark compared to gaming :/
     
  6. Champ

    Champ

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    So as long as it's stable for gaming, I should be good to go?
     
  7. SerenadeRB

    SerenadeRB New Member

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    If you wanna just game, then yes.
    But make sure it is STABLE gaming.
    5 hours of an OC'd HD 4850 playing crysis crashed on me
    </3
     
  8. Champ

    Champ

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    That's good. Stock cooler?
     
  9. SerenadeRB

    SerenadeRB New Member

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    yea,
    my temps were very low in the 40's
    but i was OC'd at 800/1175
     
  10. FR@NK

    FR@NK

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    Geez 800 core on a 4850? That must really put alot of strain on the VRMs. My 4870's VRMs hit 100C+ at 800MHz and draws 70+ amps according to GPU-z...I dunno if i want to push it any farther even tho the main GPU temp is only in the 40C range.

    [​IMG]
     
  11. SerenadeRB

    SerenadeRB New Member

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    yea, I don't wanna fry them, I'm trying to sell them lo,
     

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