Originally Posted by jalyst
Does that mean it won't be as reliable as the legacy 3-wire version?
Maybe I should look at a dedicated fan controller...
I had ruled-it-out thinking most modern mobo's/fans should be sufficient.
Anyone know of some excellent dedicated fan controllers?
Sorry for the OT question....
No, the reliability of the fan mainly will be the same since the weakest part is the mechanical, its just the difference at the mechanism to control a dc fan, the pwm method using the 4th wire is the latest generation which provides a lot of advantages over the classic 3 wires fan.
Just scroll to the bottom and read the summary at the end of the good article on controlling fan here -> Why and How to Control Fan Speed for Cooling Electronic Equipment
The main advantage is with only "SINGLE" 4 pins fan header at the mobo, usually the cpu fan is enough to "control & orchestrate
" many fans
at once with this 4th PWM signal at each fan without using those pesky classic fan controller that must going thru the headache of choosing the correct wattage that can power those fans.
Of course there is a fan controller that specifically for these 4 wires pwm fan, unfortunately currently no body sell it, you have to build your self like Martin did here -> http://www.overclock.net/water-cooli...ontroller.html
, he is going to use it in his upcoming 4 wires PWM fans review edition. Edited by Bing - 12/8/10 at 10:19pm