http://www.analog.com/library/analogdia ... speed.html
FormatC wrote:Is there a circuit I can make to simulate a 4 pin MB header? and if the fan does work at all with the full 12 Volts will it run at full speed?
Or the cheap and easy way. http://www.bit-tech.net/modding/2001/12 ... ntroller/1
If you prefer, get one at a good price at Frozen.CPU or the Zalman made unit to save time and any hassels. (Zalman ZM-MFC2 Multi Fan Controller) http://www.frozencpu.com/cat/l3/g34/c17 ... Page1.html
A fan controller with PWM isn't an easy thing to find, but not impossible. So shop around.
Vantec Nexus and Sunbeam Rheobus are PWM fan controllers to consider too.