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Weird noise from Zalman CNPS9500AT CPU cooler

Last response: in Overclocking
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March 27, 2009 4:10:53 PM

Hi guys,

I am new here and really hope someone could help me out with this one. My cooler Zalman CNPS9500 is making some weird noises that sounded like the coppers from the heatsink are vibrating at high speed. My temperature level for my e8400 cpu is pretty stable. I have also tried to reorganize my cables just in case they are hitting the heatsink but to no avail. The sound seems to appear under low loadings of the cpu, or at fan speed about 1910 rpm and the noise dissapears at higher rpms. I heard that this is not a bad cooler, and never heard a problem like this from anyone else who's using this cooler. Any help will be very much appreciated.

April 10, 2009 3:54:26 AM

Have you checked that the heatsink is mounted properly? The pushpins have a tendency to not go on right.
April 14, 2009 3:43:47 AM

irkjab said:
Have you checked that the heatsink is mounted properly? The pushpins have a tendency to not go on right.


The Zalman 9500 AT doesn't used pushpins
April 14, 2009 3:44:42 AM

irkjab said:
Have you checked that the heatsink is mounted properly? The pushpins have a tendency to not go on right.


Check if any wires is interfering with the fan, open up the case and start up your system and maybe you can visually diagnose the problem
!