1-2 year old GTX 650 fans at 100 since startup

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R

Rouch

Honorable
Jul 8, 2013
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So recently my GPU started to go full on with the fans no reason, I cleaned up the GPU and it still does it, I checked the all cables going to it and they seem okay, and I've tried many software (MSI, SpeedFAN, EVGA) to try to slow down the fans and nothing worked, the fans do not go down in speed whatever I try to do. The idle temperature is about 30° and the fans do not go down. Is there a way to fix that or do I need to RMA? I also want to add that I've recently changed my PSU so it shouldn't be the problem since the GPU problem was the even before I changed it.

Thanks.
 
Solution
iam2thecrowe
there is normally a wire from the fan that monitors/controls fan speed, it could be broken. If this is not in use the fan may run at full speed. What specific model of gtx650 is it?
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R

Rouch

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Jul 8, 2013
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There shouldn't really be a reason for them to go THAT fast, as I didn't get anything that can possibly burn my GPU down. And why would the fans go 100% if the temp is so low?
 
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Shaun o

Shaun o

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Oct 7, 2007
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If the thermal resistor has become faulty that is part of the Gpu die in most cases.
But since you are getting a reading, it would point to the fact that the PWM chip on the Nvidia board has failed.

The power modulation chip on the graphics card is linked to the thermal resistor that is embedded in the Nvidia GTX 650 gpu die.

If it fails then your fans on the graphics card will run at about 80 to 90% of there rpm speed.
no matter what Temps the thermal resistor of the gpu die are currently reporting in Oc/F.

If you have not set a fan power profile or manual fan setting in the Nvidia software Suite, or by using anything like MSI afterburner overclocking and tweaking software.

Then presume the PWM chip on the graphics card is the problem.
The Pwm chip controls the amount of voltage given to the fans on your card, the more voltage applied to them the faster they spin in rpm, it does this based on the temps reported by the thermal resistor of the Nvidia gpu die.

So it has likely failed on your graphics card.

If the card is still under warranty then Rma the card back to the vendor of the card.
You may be lucky if they have no GTX 650 cards, left to replace your Rma card.
So they may send you a 750 or a 750 TI card as a near like for like replacement if it cannot be fixed, by honor of the warranty policy.
If the card is still under warranty use it.

 
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R

Rouch

Honorable
Jul 8, 2013
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It's a asus GTX650-DC-1GD5
You can just google asus gtx 650 and it's the first one.
 
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R

Rouch

Honorable
Jul 8, 2013
16
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I guess I'll Rma iit since it's also a rather old card and it's still under warranty.
I did try to set a profile in MSI Afterburner and it did no difference. EVGA says the RPM speed is 4200-4230 and keeps jumping between those two. Thanks for taking your type to write this!
 
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iam2thecrowe

iam2thecrowe

Glorious
Jul 4, 2010
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ok, well looking at the pic of it, there are 4 wires going to the fan, so one of them is not connected properly on the fan end, or the monitoring end at the board side has an issue. If it's under warranty RMA it. If you really dont want to rma it for some reason you can take it apart and try re-solder the fan leads if they are broken off (common issue). but if you rma it, since its an older board, you may end up with a newer gtx750 replacement.....
 
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R

Rouch

Honorable
Jul 8, 2013
16
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10,515


Yeah, I'll probably rma it, thanks for taking your time to help me!
 
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