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7970 Fan randomly turns completely off during gaming then turns right back on.

post #1 of 13
Thread Starter 
Ok as title implies, I have been noticing in the past month now that when Im in the middle of an intesne gaming session the fan will completely turn off as in go to 0% and then within seconds turn right back on to the original speed. This is rather annoying as Afterburner does not show the fan speed dip in the graph, but it does not affect my gameplay or GPU temp speeds. (I think) Well at least I don't notice a temp spike when it happens.


Anyone know the cause to this and maybe a possible fix? It's really annoying and I would like to have it sorted out. I have never had this problem with any other GPU I have used in the past.

My guess maybe not enough power coming from the wall? I'm using a 1200w PSU (I know overkill) which I originally had for crossfire 5970's few years ago.

Also I'm not sure if it makes a difference I have the Power Limit set to default +0% not sure if sliding it over +20% would help.
Edited by Kosai - 5/25/13 at 1:39am
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post #2 of 13
I had that happen with my GTX 275s, it would do that when they got too hot (strangely enough), after I cranked up the fan it seemed to solve it. It Will alsao happen to my current cards during a failed oc. Hopefully this helps you even though we have completely different cards
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post #3 of 13
Thread Starter 
Well right now I have the fan set to 100% and temps usually peak at about 65-67c at the hottest. (I have no AC) And this still happens. Like I said my games run perfectly fine, no problem and CCC doesn't give me a bad OC message or anything.
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post #4 of 13
Does it happen when Afterburner is disabled?
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post #5 of 13
Thread Starter 
Quote:
Originally Posted by Mookster View Post

Does it happen when Afterburner is disabled?

Wouldn't that turn off my custom overclocks and fan speed? Testing.
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post #6 of 13
Thread Starter 
Yeah that was a noob question, I noticed it didn't turn anything off I checked through CCC. Well currently testing, so far nothing for about 10 mins. I would be surprised it afterburner is the culprit here.
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post #7 of 13
Thread Starter 
Ok just got back from further testing, and yeah it happened again even with AB turned off. But custom clocks/fan speed still going.

Anyone else have an idea?
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post #8 of 13
Do the fans actually turn off?
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post #9 of 13
Thread Starter 
Quote:
Originally Posted by DaveLT View Post

Do the fans actually turn off?

Yes only the actual GPU 7970 fan turns completely off, or at least just sop suddenly then within seconds it turns right back on like nothing.
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post #10 of 13
Quote:
Originally Posted by Kosai View Post

Yes only the actual GPU 7970 fan turns completely off, or at least just sop suddenly then within seconds it turns right back on like nothing.
I see. Could be a card-related isolated issue though. tongue.gif Call (or email) whoever's in charge of RMA and ask whether it can be RMA'd for or if it's not a big problem
I am worried that the temps can spike up and then overheat suddenly thus BSOD or shutdown instantly
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Ayase Eli
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