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Does smart fan feature still work?

post #1 of 6
Thread Starter 
I have a question on the 3pin y cable. My new mobo has a 4 pin connector but I have a 3pin y cable. If I connect 3pin to 4pin, can the smart fan feature in BIOS still control the fan speed? Thanks.
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post #2 of 6
Short answer: No.
Long answer: No, and the reason is that that 4th pin serves to feed the PWM signal to the fan. On older systems, the 3-pin was voltage controlled. While it worked, it required alot of extra circuitry to get it to work right. Now, the power pins are kept at 12v, and the 4th pin feeds a signal to the fan telling it how fast or slow to spin. Doing it this way also gives to precision control over the fan speeds.

So while the connector will work, and the fan will spin, you cant control it. PWM capable fans are easy to find on newegg, so go grab one.
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post #3 of 6
Thread Starter 
In other words. The fans will spin at full speed all time. Correct?
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post #4 of 6
yup
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post #5 of 6
You have an As.s board. They only control fans by PWM.

Gigabyte boards give you a choice between PWM control (4-wire) and Voltage control (3-wire). No more As.s boards for me.
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post #6 of 6
Quote:
Originally Posted by ehume View Post
You have an As.s board.
Its so hilarious everytime I see ehume mentioned his mobo this way throughout this forum, love it. ...LOL
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