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- Tue Feb 27, 2007 8:30 pm
- Forum: Intel Motherboard Forum
- Topic: D975BXB2, Fan control, Clicking
- Replies: 9
- Views: 7053
Fan noise
The clicking fan noise is caused by the PWM fan controller. Pulse Width Modulation is a method of applying a signal to the fan that will vary the width of the fan's pulse. e.g. fan control is digital. Some fans tend to click with PWM controllers and some don't. Had to replace my Panaflow fan with a ...