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VDDC Phase Temperatures?

Discussion in 'GPU-Z' started by Arctucas, Apr 9, 2010.

  1. Arctucas

    Arctucas

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    I opened GPU-Z and found a sensor called 'VDDC Phase #1 Temperature' that I had not seen previously. (First .gif)

    I then opened another instance of GPU-Z and it was not listed. (Second .gif)

    What is happening here?

    Also, what is VDDC?
     

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  2. W1zzard

    W1zzard Administrator Staff Member

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    vddc is gpu voltage .. what card is that ? do you have a volterra voltage regulator on the card?
     
  3. Arctucas

    Arctucas

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    It is an eVGA 8800GTX. P/N:768-P2-N831-AR.

    How do I determine what voltage regulator I have?
     
  4. Arctucas

    Arctucas

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    @W1zzard,

    I have noticed that Everest reports GPU voltage (GPU Vcc) as ~3.27V. Why the discrepancy?
     
  5. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    Everest > Computer > Sensor
    [​IMG]

    8800 GTX uses ADI (temperatures) + Volterra (voltages) sensor chips.

    VDDC Phase temperatures are the temperatures of the VRM chips of each VDDC phase (great way to find out VRM temperatures and loading).
     
  6. Arctucas

    Arctucas

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    Thanks for the info, btarunr.

    Everest says: GPU Sensor Type Analog Devices ADT7473 (NV-I2C 2Eh), but no mention of Volterra.

    So, is that good or what? Does GPU-Z accurately read that info, or is Everest wrong?

    As to the VDDC Temps, I only got that reading to appear once, and I do not believe it was correct if you look at the attached .gif in my original post, but now it will not come up.
     

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    Last edited: Apr 11, 2010
  7. Arctucas

    Arctucas

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    It appears no-one has an answer?

    Hopefully it is addressed in a future release.

    Thanks for a great application nonetheless.
     
  8. btarunr

    btarunr Editor & Senior Moderator Staff Member

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    Ah, it seems 8800 GTX doesn't use a Volterra controller, but this (ignore the red circle, it's the square chip):

    [​IMG]
     
  9. Arctucas

    Arctucas

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    @btarunr,

    OK, thanks.

    I hope W1zzard will to fix this (if possible) in a future release.

    If not, GPU-Z is a great application anyway.
     

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