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HELP! Coil whine coming from new GPU? or is it the PSU?

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  • coil whine
  • Graphics Cards
  • Components
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December 13, 2013 8:49:19 AM

I bought a new ASUS AMD hd 7990 (because the new 13.8 drivers are awesome!) and i am experiencing coil whine (not extremely bad, but enough to make me lose my mind after a couple of hours. The problem is that i don't know if the coil whine is really because of the new GPU or is the 750w PSU that causes coil whine with this GPU in particular (my previous sapphire hd 7950 didn't had any coil whine). I have been told that sometimes some PSU's tend to coil whine more with some GPU's then with others...

Notes: AMD recommends a minimum of 750w PSU for the hd 7990.
Also, the hd 7990 requires two 8pin connector, but i am using two 6pin plus two 2 pin connector (6+2 + 6+2 instead of the recommended 8+8).

Any suggestions??

Specs:
-TX 750w Corsair PSU
-fx 8150 amd CPU
-asus hd 7990 GPU (bought today)
-8gb Corsair Vengeance RAM
-Gigabite ga-97a... Motherboard

More about : coil whine coming gpu psu

a c 325 U Graphics card
December 13, 2013 11:01:27 AM

It depends on what the actual sound is that you are hearing. Gfx cards have no wound coil, except for the fan motor. Does the pitch change with the speed of the gfx card fan? The CPU fan? If it is constant, then I would lean towards it being coil whine from the PSU.
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December 14, 2013 4:10:44 AM

clutchc said:
It depends on what the actual sound is that you are hearing. Gfx cards have no wound coil, except for the fan motor. Does the pitch change with the speed of the gfx card fan? The CPU fan? If it is constant, then I would lean towards it being coil whine from the PSU.


i can only hear coil whine when i play games , and it gets worse when i play more demanding games (and the fans get louder as i play more demanding games....so yep, you can say that the coil whine pitch increases as the fans rotate faster). however, i know the sound difference between coil whine and fans rotating.

i dont think the coil whine is coming from the cpu because when i had my previous hd 7950 i didnt had any coil whine. the only new hardware is the 7990.
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a c 325 U Graphics card
December 14, 2013 9:34:56 AM

In that case, I would have to agree with you. The DC fan motor(s) may be the culprit. Which Asus HD 7990 do you have? this one: http://www.asus.com/Graphics_Cards/HD79906GD5/
Did Asus provide a utility to O/C with? If so, you may be able to use it to set the fan speed to max and see if it is still present. Or use it to play around with the fan speeds to see if that is truly what you are hearing.
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December 14, 2013 6:45:39 PM

clutchc said:
In that case, I would have to agree with you. The DC fan motor(s) may be the culprit. Which Asus HD 7990 do you have? this one: http://www.asus.com/Graphics_Cards/HD79906GD5/
Did Asus provide a utility to O/C with? If so, you may be able to use it to set the fan speed to max and see if it is still present. Or use it to play around with the fan speeds to see if that is truly what you are hearing.


Yep i have that hd 7990.
I have used a software to turn my fans up to 100% and there was no coil whine...just the noise of the fans rotating. I only get coil whine when i play games (and more demanding games = more coil whine for me).
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a c 325 U Graphics card
December 15, 2013 1:21:02 PM

Ahh. So when the fans are at 100% no whine. Still at 100% but under game stress; whine returns. OK, that's not the fan motor then. You may be hearing freq whine. This is an electrical phenomena caused by high freq equipment. Both the GPU and the CPU operate at extrememly high frequencies; in the GHZ. Something in your system has a faulty noise cancelling component that is not properly blocking the electronic/audible noise. If this only happens with the new card, I'd say it is the culprit.

But it could also be coming from the monitor. So be sure to isolate that as a possibility.
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a c 573 U Graphics card
December 15, 2013 2:15:51 PM

TechPowerUp.com reported annoying coil noise during their review of the AMD Radeon HD 7990 6 GB. There are at least ten coils (ferrite core chokes/inductors) on the reference design HD7990.

http://www.techpowerup.com/reviews/amd/hd_7990/31.html
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December 18, 2013 9:37:48 AM

clutchc said:
Ahh. So when the fans are at 100% no whine. Still at 100% but under game stress; whine returns. OK, that's not the fan motor then. You may be hearing freq whine. This is an electrical phenomena caused by high freq equipment. Both the GPU and the CPU operate at extrememly high frequencies; in the GHZ. Something in your system has a faulty noise cancelling component that is not properly blocking the electronic/audible noise. If this only happens with the new card, I'd say it is the culprit.

But it could also be coming from the monitor. So be sure to isolate that as a possibility.


Do you think the fact that i am using 6+2 pin connectors instead of the recommended 8 pin connectors could be the problem?

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a c 325 U Graphics card
December 18, 2013 10:08:38 AM

Nuno Miguel Costa said:
clutchc said:
Ahh. So when the fans are at 100% no whine. Still at 100% but under game stress; whine returns. OK, that's not the fan motor then. You may be hearing freq whine. This is an electrical phenomena caused by high freq equipment. Both the GPU and the CPU operate at extrememly high frequencies; in the GHZ. Something in your system has a faulty noise cancelling component that is not properly blocking the electronic/audible noise. If this only happens with the new card, I'd say it is the culprit.

But it could also be coming from the monitor. So be sure to isolate that as a possibility.


Do you think the fact that i am using 6+2 pin connectors instead of the recommended 8 pin connectors could be the problem?


No, that should not matter at all.
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