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VDDC Phase Temperatures?

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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  • GPU-Z 0.4.2 #1.gif
    GPU-Z 0.4.2 #1.gif
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  • GPU-Z 0.4.2 #2.gif
    GPU-Z 0.4.2 #2.gif
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W1zzard

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

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W1zzard said:
vddc is gpu voltage .. what card is that ? do you have a volterra voltage regulator on the card?
Click to expand...

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

How do I determine what voltage regulator I have?
 
Arctucas

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@W1zzard,

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

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

How do I determine what voltage regulator I have?
Click to expand...

Everest > Computer > Sensor


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).
 
Arctucas

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btarunr said:
Everest > Computer > Sensor
http://img.techpowerup.org/100411/bta142.jpg

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).
Click to expand...

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:
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.
 
btarunr

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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):

 
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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