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[GPU-Z Test Build] Fix for cold bug on GTX 480

Discussion in 'GPU-Z Test Builds' started by W1zzard, May 10, 2010.

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  1. W1zzard

    W1zzard Administrator Staff Member

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    When testing cards at below -64°C the NVIDIA driver gets confused and thinks the GPU overheats which causes a loss in performance.

    When started with /fixcoldbug the attached GPU-Z build will increase the temperature reading that the NVIDIA driver sees by 65°C (it does not actually increase GPU temperature). This change should result in stable benching at lower temperatures.

    Please note that a warm reboot might not remove the change, powering off the system and back on will.

    See also here: http://www.xtremesystems.org/forums/showthread.php?t=250634

    Please report your success in this thread and here.
     

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    Last edited: May 12, 2010
  2. Dentlord

    Dentlord New Member

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    Thanks so much for this!
    Will be testing tonight and report back the results.
     
  3. Kal-EL

    Kal-EL

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    Thx Wizz, I'll be givin this a try as well.
     
  4. Dentlord

    Dentlord New Member

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    Ok so I just tested this for a bit, and I'm sorry to say it didn't change the cold slow bug any for me.

    It did alter what temps gpu-z and precision were reading, at -65c it was around 0c. However the cold slow bug started at exactly -68c (according to probe), with or without the fix applied.
     
  5. W1zzard

    W1zzard Administrator Staff Member

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    changes included in 0.4.3
     

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