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Noisy fanless power supply

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January 2, 2010 6:21:40 PM

i have purchased a northq pacific 2 500w fanless power supply to try and quieten my system, however after about thirty mins the built in back up fan kicks in and refuses to go off again rather defeating the point of buying it in the first place.
i have no case fan fitted so would the extra air flow in my case be enough to reduce the temp and stop this back up fan kicking in, i cant help feeling i have wasted my money
January 2, 2010 7:06:10 PM

You haven't got any case fans? You're probably overheating everything in the system - no wonder your PSU is having to kick on a backup fan. Your CPU and motherboard are probably frying. You need at least a few fans on a system to prevent overheating. If quietness is the main concern, I recommend Noctua fans.
January 2, 2010 10:49:29 PM

cjl said:
You haven't got any case fans? You're probably overheating everything in the system - no wonder your PSU is having to kick on a backup fan. Your CPU and motherboard are probably frying. You need at least a few fans on a system to prevent overheating. If quietness is the main concern, I recommend Noctua fans.


thanks for that will act on your advice
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a b ) Power supply
January 3, 2010 4:17:17 PM

even my old pentium1 166mhz had a high airflow cse fan and a supe rhigh airflow fan!
a c 141 ) Power supply
January 3, 2010 4:33:21 PM

When looking for quiet PSU's start here:

http://www.silentpcreview.com/Recommended_PSUs

For quiet fans, look here:

http://www.silentpcreview.com/article63-page1.html

Given your predisposition for quiet, if you can't connect the fans to the moBo, make sure to have 3 pin, 3 wire fans, with 3 speed switches or w/o the switches, I would suggest a Fan Controller akin to:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I'm typing from my son's Antec 1200 case, and all case fans are set to their lowest setting .....changing them all to high produces 1 degree temp difference.
!