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 Post subject: Intel SB Stock Cooler: PWM vs Voltage control
PostPosted: Mon Oct 17, 2011 10:35 am 
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Joined: Sun Jun 05, 2011 7:37 pm
Posts: 11
My mobo (Gigabyte H67N-USB3-B3 ITX) allows control of the HSF to be either PWM or voltage. I started using it as PWM but the idle speed of 1300 RPM was noticeable (CPU is i5-2500K). I changed it to voltage and the idle speed dropped to 500RPM and the fan noise is buried beneath the PSU fan now. Prime95 shows only a few degrees difference at top temp even though fans are running about 20% slower (I lowered the slope a little too). I was thinking about buying a quieter cooler but not now. Just thought I'd pass on this little trick if your mobo can handle it. Apologies if this has already been posted.


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