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GPU fan spins up for a quick second randomly

post #1 of 9
Thread Starter 
Hi OCN,

I noticed tonight that my main computer (GTX 670, the Number Cruncher) has a weird issue that just started yesterday. Randomly when idling, the GPU fan will spin up from 1350RPM to anywhere from 3000-3600 RPM. The other peculiar thing, is when this happens, PrecisionX only reports a change in fan RPM, yet no change in fan speed in percentage. I've calculated this, and the fan speed in percent should be in the 65-70% speed while this is happening.

Here's an image to show what I'm talking about:

Any ideas what's causing this? I'm using the latest NVIDIA drivers and cleaned the card out completely (took cooler off, blew it all out with compressed air) around a month and a half ago, so it shouldn't be very dirty.

EDIT: It just did it again, except about 6 times in less than 10 seconds. This is really weird, it just randomly spins up. Here's another picture:


EDIT 2: Nothing changes if I change the fan profile in PrecisionX, or even if I disable auto fan control. Manual speed of 40% and this is still happening.
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post #2 of 9
A few years ago maybe 4 or 5 I was using an Nvidia 8800 gt. I never tried monitoring the fan speed back then but I could hear the cards fan spin up for a quick second and then slow down again even while browsing. The card functioned normally from what I could tell but after a few months of that happening sometimes the fan would not start when I started the computer and I would have to shut the computer down and manually spin the fan around with my finger and restart the computer and the fan would function again.

The only reason I found out the fan wasn't spinning was because the computer was shutting down when the GPU got too hot. It was very strange but eventually I gave the card to my sister when I got my GTX 260 but she was too lazy to check to see if the fan on the card was running before doing anything and cooked it. From what I can tell this is a some sort of a symptom of maybe the fan motor going bad. If it isn't the fan motor then it has to be some on board fan controller messing up because even with the fan speed set from auto to manual it would still spin up.

Mind you this never happened 6 times within a few seconds on my 8800 gt. It would only happen maybe once an hour or so. If this 670 is still under warranty it would probably make the most sense to monitor the fan speed and RMA it if it starts effecting performance or overheating.
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by Viperelite View Post

A few years ago maybe 4 or 5 I was using an Nvidia 8800 gt. I never tried monitoring the fan speed back then but I could hear the cards fan spin up for a quick second and then slow down again even while browsing. The card functioned normally from what I could tell but after a few months of that happening sometimes the fan would not start when I started the computer and I would have to shut the computer down and manually spin the fan around with my finger and restart the computer and the fan would function again.

The only reason I found out the fan wasn't spinning was because the computer was shutting down when the GPU got too hot. It was very strange but eventually I gave the card to my sister when I got my GTX 260 but she was too lazy to check to see if the fan on the card was running before doing anything and cooked it. From what I can tell this is a some sort of a symptom of maybe the fan motor going bad. If it isn't the fan motor then it has to be some on board fan controller messing up because even with the fan speed set from auto to manual it would still spin up.

Mind you this never happened 6 times within a few seconds on my 8800 gt. It would only happen maybe once an hour or so. If this 670 is still under warranty it would probably make the most sense to monitor the fan speed and RMA it if it starts effecting performance or overheating.
Yeah, I think ask on the EVGA forums about this, it's an EVGA card. And the problem is that this only happened after 8 hours of use yesterday, and I think when EVGA tests cards they just run them through a 15 minute test to make sure everything is "working well" and that probably wouldn't pick up this problem.

But thanks for chiming in, I was hoping someone would. +Rep.
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post #4 of 9
Have you actually heard the card change RPM? It's one thing for the monitoring software to tell you that, it's another to actually witness it.

If you card has a warranty, I'd still send it in. You should explain this to them in hopes they'll test it more extensively. I doubt they'll miss it. Don't assume they'll test it carelessly. It's worth the time and possible shipping cost than replacing the cooler or perhaps the entire card!
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by tmontney View Post

Have you actually heard the card change RPM? It's one thing for the monitoring software to tell you that, it's another to actually witness it.

If you card has a warranty, I'd still send it in. You should explain this to them in hopes they'll test it more extensively. I doubt they'll miss it. Don't assume they'll test it carelessly. It's worth the time and possible shipping cost than replacing the cooler or perhaps the entire card!
Oh yes you can definitely hear it spin up, I've also physically looked at the fans spinning and they're both spinning, and appear to be spinning near the same speed, so one isn't malfunctioning or anything.

But I'm planning on purchasing a R9-290X when they come out, maybe when I receive it then I'll RMA this card, for the second time. (First time was for bad coil whine) At least if I wait until then I'll have a good card to play on still.
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post #6 of 9
Quote:
Originally Posted by cam51037 View Post

Oh yes you can definitely hear it spin up, I've also physically looked at the fans spinning and they're both spinning, and appear to be spinning near the same speed, so one isn't malfunctioning or anything.

But I'm planning on purchasing a R9-290X when they come out, maybe when I receive it then I'll RMA this card, for the second time. (First time was for bad coil whine) At least if I wait until then I'll have a good card to play on still.

Oh so you've already had problems with this card?
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by tmontney View Post

Oh so you've already had problems with this card?
No, well, I don't think so. I RMAed the card the first day because of it's bad coil whine.

I called them up when I got a replacement and they said "we couldn't find any problems with it during our 15 minute test, but since it's within the first month of purchase we sent you a new card."

So this should be a different card.
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post #8 of 9
What a coincidence... I just started having this problem on Sunday.

I also have a EVGA GTX 670 and when I did a search for "GTX 670 Fan Randomly Spinning Up", I found this thread.

What's happening here?
post #9 of 9
Thread Starter 
Quote:
Originally Posted by coolxal View Post

What a coincidence... I just started having this problem on Sunday.

I also have a EVGA GTX 670 and when I did a search for "GTX 670 Fan Randomly Spinning Up", I found this thread.

What's happening here?
Welcome to the club. thumb.gif

It started happening to my card on Saturday, not quite sure what's up but it hasn't happened in the past 24 hours.
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