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Changing 4 pin Pwm fan to a 3 Pin

post #1 of 4
Thread Starter 
Does changing a 4 pin fan to a 3 pin fan make it lose any power?

I really like controlling the fans using a fan controller knob at the back of my computer and well I just find it easier. Just out of curiosity so I didn't do something stupid, does it make it lose any power/voltage? I don't want to lose any rpm because of the adapter
post #2 of 4
Quote:
Originally Posted by KikkoHero View Post
Does changing a 4 pin fan to a 3 pin fan make it lose any power?

I really like controlling the fans using a fan controller knob at the back of my computer and well I just find it easier. Just out of curiosity so I didn't do something stupid, does it make it lose any power/voltage? I don't want to lose any rpm because of the adapter
No. 4-pin to 3-pin connector simply drops the 4th pin connection. 4th-pin is for PWM, which is an advanced way of controlling the fan. 3-pin controls the fan by adjusting the voltage, while the 4-pin controls the fan by turn it on-off repeatedly.
Misaka
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Misaka
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post #3 of 4
Thread Starter 
So losing that 4th pin won't lose and power towards the fan?

I understand that the PWM lets me control my fans through bios or SpeedFan (guessing on the name there) but I have fan controllers from my old stock fans which I replaced with Akasa Vipers.

This forum is fast haha
post #4 of 4
Quote:
Originally Posted by KikkoHero View Post
So losing that 4th pin won't lose and power towards the fan?

I understand that the PWM lets me control my fans through bios or SpeedFan (guessing on the name there) but I have fan controllers from my old stock fans which I replaced with Akasa Vipers.

This forum is fast haha
No. The first two pin delivers the power. The third pin provides real-time RPM. The fourth pin allows PWM.
Misaka
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OSOSMonitorKeyboard
Windows 7 Professional x64 (Host) Crunchbang Linux x64 (Guest) HP 2311x HP PS/2 Keyboard 
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Misaka
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OSOSMonitorKeyboard
Windows 7 Professional x64 (Host) Crunchbang Linux x64 (Guest) HP 2311x HP PS/2 Keyboard 
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Rosewill Capstone 450 W Rosewill Challenger Logitech M570 ASUS Xonar D1 
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