Hissing noise when under stress

Gardinen · Jan 9, 2006, 05:15 PM

I've overclocked my computer and it does a hissing noise when running Prime95.It's like a high frequency noise appering only under stress.

Necrosis · Jan 9, 2006, 05:19 PM

To me that sounds like a cap maybe getting ready to go. What power supply do you have?

Gardinen · Jan 9, 2006, 05:29 PM

Quote:

Originally Posted by Necrosis

To me that sounds like a cap maybe getting ready to go. What power supply do you have?

Enermax 460W

The noise is only there when using a stresstest and overclocking the CPU and RAM. If I lower the CPU voltage towards stocklevel the hissing gets lower.

H3X4D3C1M4L · Jan 9, 2006, 09:08 PM

Thats happening with an old Enermax 350 I have in a 600 MHz K7 system.... and if I take everything out then jump the SYS_ON wire and ground pin then the hissing noise starts but its so high pitch it keeps going up and up then it goes out of my hearing range....

If its a sort of whistling noise that changes under stress then it could be a capacitor. I have to check mine

daedal · Jan 10, 2006, 02:27 AM

Another thing I can think of is if you have a fan running on variable speeds.
Some fans don't support some frequencies/speeds too well and emit a high pitched whine.

Logla · Jan 10, 2006, 09:48 PM

my rig does this all the time. Sometimes you notice it in windows just by dragging icons round the screen. Its wierd but doesn't seem to cause (or indicate) problems.

Lowfat · Jan 10, 2006, 09:54 PM

what motherboard do you have? When i had a DFI motherboard my coils on the motherboard would 'sing'. It happened on almost all DFI NF2 boards, it never led to any problems as far as i know. Open the case up and see if you can find where it is coming from.

H3X4D3C1M4L · Jan 10, 2006, 09:59 PM

Update: Mine's coming from a PSU capacitor... I tried wiggling it and almost got it to go away

Logla · Jan 12, 2006, 09:09 AM

Quote:

Originally Posted by Lowfat

what motherboard do you have? When i had a DFI motherboard my coils on the motherboard would 'sing'. It happened on almost all DFI NF2 boards, it never led to any problems as far as i know. Open the case up and see if you can find where it is coming from.

Abit IC7-MAX3

Jan 9, 2006, 05:15 PM	#1
Gardinen DriverHeaven Senior Member Join Date: Feb 2003 Location: Trollhättan, Sweden Posts: 512 Rep Power: 0	Hissing noise when under stress I've overclocked my computer and it does a hissing noise when running Prime95.It's like a high frequency noise appering only under stress.

Jan 10, 2006, 02:27 AM	#5
daedal Uber Coffee Drinker Join Date: Mar 2005 Location: Gatineau, Quebec Posts: 2,250 Rep Power: 0	Another thing I can think of is if you have a fan running on variable speeds. Some fans don't support some frequencies/speeds too well and emit a high pitched whine. __________________

Jan 10, 2006, 09:54 PM	#7
Lowfat Xtreme Join Date: Oct 2003 Location: Grande Prairie, AB, Can Posts: 4,254 Rep Power: 101	what motherboard do you have? When i had a DFI motherboard my coils on the motherboard would 'sing'. It happened on almost all DFI NF2 boards, it never led to any problems as far as i know. Open the case up and see if you can find where it is coming from. __________________

Jan 9, 2006, 05:19 PM	#2
Necrosis HardwareHeaven Extreme Member Join Date: May 2002 Location: Ohio Posts: 8,838 Rep Power: 131 System Specs	To me that sounds like a cap maybe getting ready to go. What power supply do you have?

Jan 9, 2006, 09:08 PM	#4
H3X4D3C1M4L DriverHeaven Extreme Member Join Date: May 2005 Posts: 6,794 Rep Power: 0	Thats happening with an old Enermax 350 I have in a 600 MHz K7 system.... and if I take everything out then jump the SYS_ON wire and ground pin then the hissing noise starts but its so high pitch it keeps going up and up then it goes out of my hearing range.... If its a sort of whistling noise that changes under stress then it could be a capacitor. I have to check mine

Jan 10, 2006, 09:48 PM	#6
Logla HardwareHeaven Extreme Member Join Date: May 2003 Posts: 3,311 Rep Power: 0	my rig does this all the time. Sometimes you notice it in windows just by dragging icons round the screen. Its wierd but doesn't seem to cause (or indicate) problems.

Jan 10, 2006, 09:59 PM	#8
H3X4D3C1M4L DriverHeaven Extreme Member Join Date: May 2005 Posts: 6,794 Rep Power: 0	Update: Mine's coming from a PSU capacitor... I tried wiggling it and almost got it to go away