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Can i manually control the speed of my two 3-pin case fans if they are plugged in 4-pin slot? New to pc's - Pls help!

Tags:
  • Cooler Master
  • QuietPC
  • Fan
  • Components
  • Fan Speed
  • Cases
  • Speed
  • Fan Controller
Last response: in Components
July 24, 2014 10:27:16 AM

Hello everyone.

So as explained in the title, i just bought today 2 x Coolermaster Sicleflow 120mm case fans. My motherboard only has 4-pin slots. So i plugged them in the PSU with the cables provided and they run 100% all the time. The problem is that they are too loud and after 2 hours of working, the headache is certain. I want my pc to run quietly when i do light work but when i'm gaming and i want good airflow, i don't really mind for the noise as i wear my headset.

So my questions are:

1) Can i plug the 3-pin fans in the 4-pin slots in the mobo and control them manually? How can i do that? I tried the "SpeedFan" program but it's too confusing for me as i'm new to pc's.

2) I brought the cables outside from the case to plug the fans in when i'm gaming and plug them out when i'm not. I don't know if this is a good thing to do when the pc is still running.

Pls help!! :)  The sound is too loud for me and my budget is little bit low to buy new fans :D  Pls tell me what to do :)  Thank you!

More about : manually control speed pin case fans plugged pin slot pls

July 24, 2014 10:41:22 AM

1. No you can't control the speeds, you can only control the speeds of 4 pin fans

2. That is quite dangerous to do

You can get the nzxt sentry mesh, it's a fan controller for 3 pin fans
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July 24, 2014 11:24:43 AM

So you are telling me that i can only control the 3 pin fans if i buy a device like nzxt sentry? So there is no program for 3-pin fans?
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July 24, 2014 11:36:25 AM

Nicko_Bellic said:
So you are telling me that i can only control the 3 pin fans if i buy a device like nzxt sentry? So there is no program for 3-pin fans?


Not in your motehrboard no
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July 24, 2014 12:01:54 PM

Nicko_Bellic said:
So you are telling me that i can only control the 3 pin fans if i buy a device like nzxt sentry? So there is no program for 3-pin fans?


don't bother reading any other answers then...

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July 24, 2014 12:35:05 PM

Meh... I have to buy NZXT Sentry then... I hope it is good and do the job... Thanks guys! :) 
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July 24, 2014 12:38:16 PM

Nicko_Bellic said:
Meh... I have to buy NZXT Sentry then... I hope it is good and do the job... Thanks guys! :) 


I can only control up to 4 fans though , bear that in mind
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July 24, 2014 12:44:43 PM

All i have is 4 fans mate :)  But the 2 of them are really loud (maybe is the time to even lower the noice of the rest).

Also, one quick question before i buy it online, i see that the only nzxt that is available in my country is the "nzxt sentry mix 2 fan controller". Is that product any good? Also, can i put it in my Thermaltake Commander Msi case ?
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Best solution

July 24, 2014 12:58:11 PM

Nicko_Bellic said:
All i have is 4 fans mate :)  But the 2 of them are really loud (maybe is the time to even lower the noice of the rest).

Also, one quick question before i buy it online, i see that the only nzxt that is available in my country is the "nzxt sentry mix 2 fan controller". Is that product any good? Also, can i put it in my Thermaltake Commander Msi case ?


Yeah the controller supports 3 pins and as long as you have a spare drive bay it'll fit
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July 24, 2014 1:01:26 PM

legend001523 said:
Nicko_Bellic said:
All i have is 4 fans mate :)  But the 2 of them are really loud (maybe is the time to even lower the noice of the rest).

Also, one quick question before i buy it online, i see that the only nzxt that is available in my country is the "nzxt sentry mix 2 fan controller". Is that product any good? Also, can i put it in my Thermaltake Commander Msi case ?


Yeah the controller supports 3 pins and as long as you have a spare drive bay it'll fit


Thank you mate, ordered it just a minute ago. I hope it does the job :) 
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July 24, 2014 1:03:49 PM

YOU DO NOT NEED A FAN CONTROLLER TO DRIVE 3 PIN FANS FROM A 4 PIN HEADER. A 4 PIN HEADER IS A 3 PIN HEADER WITH AN EXTRA PIN.
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July 24, 2014 1:12:07 PM

13thmonkey said:
YOU DO NOT NEED A FAN CONTROLLER TO DRIVE 3 PIN FANS FROM A 4 PIN HEADER. A 4 PIN HEADER IS A 3 PIN HEADER WITH AN EXTRA PIN.


Yeah mate, i know that if you plug a 3-pin fan in a 4-pin slot will work but the thing is that i want to control the 3-pin fans. I've already plugged the 3-pin fans in my 4-pin motherboard slots and they work fine but all i want to do is to lower their speed in light work and boost them to 100% when gaming. 4-pin fans uses PWM to control their speed so you have to control 3-pin fans by voltages, an i right?
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July 24, 2014 2:15:10 PM

you can control them, either through mobo or through speedfan (if mobo is supported).
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February 25, 2016 3:06:11 PM

Just for anyone still landing here; cheaper way if fans are available with molex connectors (pre-SATA power) is to swap the pin from 12v into the 5v supply. Doesn't shift a lot of air, but virtually silent.
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