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Gigabyte Windforce 7970 Ghz RPM sensor issues?

post #1 of 7
Thread Starter 

Hello OCN,

 

I have a Gigabyte 7970(GV-R797TO-3GD) that I have owned since January 2013. When I start up Afterburner/HW Monitor it tells me the fans' RPMs are in the hundreds of thousands. Obviously this is not possible, but I am wondering if this is from a bad sensor or maybe a problem in the software? On occasion, I will hear the fans make a weird noise but have noticed no unusual temperatures or performance issues with this card, especially when gaming.

 

I would really hate to RMA it since I heard their RMA department can be a nightmare, not to mention this is my only GPU. What could it be? Should I be worried? FWIW, this card is not OC'd.

 

Input is appreciated, thanks!

 


Edited by NotReadyYet - 1/13/14 at 8:06am
    
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post #2 of 7
just a guess, but try speeding fans up. sometimes sensors misread when under certain value (ie- 800 RPM) that would explain why you have a real reading saying 998 RPM and the others are off. you can adjust your fan curve to run little higher if you like to see real readings all the time.

edit- added link if interested- http://www.overclock.net/t/1203636/official-amd-ati-gpu-mod-club-aka-the-red-mod
Edited by Blue Dragon - 1/15/14 at 2:54am
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Blue Dragon View Post

just a guess, but try speeding fans up. sometimes sensors misread when under certain value (ie- 800 RPM) that would explain why you have a real reading saying 998 RPM and the others are off. you can adjust your fan curve to run little higher if you like to see real readings all the time.

edit- added link if interested- http://www.overclock.net/t/1203636/official-amd-ati-gpu-mod-club-aka-the-red-mod

 

Thanks for the reply. I ran Furmark for a few minutes to get the fans at 100% and the insane readings went away. It showed "normal" readings across the board.

 

I was merely inquiring because I didn't know if that was an indication of a bad fan or if I needed to RMA this card.

 

Thanks.

    
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post #4 of 7
I think it means you have really good airflow
The noise is most likely the fan vibrating because its at such a low RPM... Not sure if it'll cause any long term effects, know a lot of fans vibrate at high RPMs and never heard of that shortening the fan's lifespan or anything.
On side note, you don't have a high powered case fan blowing directly on the side of the card do you? If it's airflow is fighting the GPU's fan that could be a problem.
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by Blue Dragon View Post

I think it means you have really good airflow
The noise is most likely the fan vibrating because its at such a low RPM... Not sure if it'll cause any long term effects, know a lot of fans vibrate at high RPMs and never heard of that shortening the fan's lifespan or anything.
On side note, you don't have a high powered case fan blowing directly on the side of the card do you? If it's airflow is fighting the GPU's fan that could be a problem.

 

As a matter of fact, I have two Gelid Solutions 120mm Gamer wing fans blowing on the GPU. However, they are blowing more on the heatsink than the intake fans on the GPU.

    
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post #6 of 7
If I remember correctly, those type heatsinks blow out hot air from the from the front and back. Could possibly cause the first fan on GPU and case fan to fight each other... See pic(sorry for crude drawing, I'm at work at moment)
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by Blue Dragon View Post

If I remember correctly, those type heatsinks blow out hot air from the from the front and back. Could possibly cause the first fan on GPU and case fan to fight each other... See pic(sorry for crude drawing, I'm at work at moment)

 

 

That's a really good point but I dont think the noise the fan makes happens enough for it to be the intake and GPU fans fighting eachother. Regardless, it doesn't affect performance and I'm just happy I don't have to RMA my card.

 

Thanks, you've been helpful. +rep

    
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