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Old 02-12-2013, 11:14 AM   #3 (permalink)
Joe C
Wizard Techie
 
Join Date: May 2011
Posts: 3,135
Default Re: Case Fans to PSU or to motherboard?

You can manually change your volts coming from the psu by switching around the wires on the molex connector, you can use (depending on the fan) 5volts, 7volts or full speed at 12volts
Get 12V, 7V or 5V for your Fans | silentpcreview.com
I use the 5volt method on those noisy 80mm case fans for older pc's, makes a difference in db and still allows some air flow
If the board has fan terminals, then I would assume that it is designed to power the fans connected to it
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