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5 pin gpu fan on 4 pin header

 
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post #1 of 10 (permalink) Old 10-10-2018, 12:35 PM - Thread Starter
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5 pin gpu fan on 4 pin header

Hey, so my blower style PNY GTX 970 gets pretty hot and loud. My friend gave me his dead Asus GTX 970 and I tried to connect the fan to my current gpu which has a 4 pin header. It connects (because part of the header on the gpu is broken) and the fans spin but I dont know if this setup could cause any trouble. Can leave it like that or should I get some kind of adapter? If so which one? Thanks for the help. Pic attached of the fan header attached. Sorry if all of this sounds stupid I'm pretty new to this. Thanks in advance.
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post #2 of 10 (permalink) Old 10-10-2018, 03:00 PM
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The extra pin is for rpm sensing (usually). What will matter in this case is the order and position of the colored cables. Check the fan plug on your original cooler and see it the colors match on the Asus one.

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post #3 of 10 (permalink) Old 10-11-2018, 01:52 AM - Thread Starter
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Quote: Originally Posted by Melcar View Post
The extra pin is for rpm sensing (usually). What will matter in this case is the order and position of the colored cables. Check the fan plug on your original cooler and see it the colors match on the Asus one.
The cables on the original one are all black. So I can't match anything.
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post #4 of 10 (permalink) Old 10-11-2018, 05:30 AM
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Quote: Originally Posted by Iloveramen View Post
The cables on the original one are all black. So I can't match anything.
The image you posted clearly shows colored wires going into plug.

I'm pretty sure this is the pin-out:
Pin-1 = RPM sensor (from fan #2) 1x wire
Pin-2 = Ground 2x wires here
Pin-3 = +12V 2x wires here
Pin-4 = RPM sense (from Fan #1) 1x wires here
Pin-5 = PWM signal (from VGA header) 2x wires into this pin
The rpm sensor leads are single wire leads in plug.
At least that was the pinout on Asus GPU I had.

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Last edited by doyll; 10-11-2018 at 05:33 AM.
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post #5 of 10 (permalink) Old 10-11-2018, 06:20 AM - Thread Starter
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Quote: Originally Posted by doyll View Post
Quote: Originally Posted by Iloveramen View Post
The cables on the original one are all black. So I can't match anything.
[IMG class=inlineimg]/forum/images/smilies/headscratch.gif[/IMG] The image you posted clearly shows colored wires going into plug.

I'm pretty sure this is the pin-out:
Pin-1 = RPM sensor (from fan #2) 1x wire
Pin-2 = Ground 2x wires here
Pin-3 = +12V 2x wires here
Pin-4 = RPM sense (from Fan #1) 1x wires here
Pin-5 = PWM signal (from VGA header) 2x wires into this pin
The rpm sensor leads are single wire leads in plug.
At least that was the pinout on Asus GPU I had.
He asked me to match the colours with the original fan plug. Which are all black. Am I able to plug it in without problem? The red cable would be left unplugged

Last edited by Iloveramen; 10-11-2018 at 06:30 AM. Reason: Forgot detail
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post #6 of 10 (permalink) Old 10-11-2018, 08:48 AM
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The red cable goes to one of the RPM sense pins? If that's the case and the fans spin then you should not have a problem. CHeck fan speeds and if they react to GPU temperatures properly.

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post #7 of 10 (permalink) Old 10-11-2018, 08:48 AM
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The red cable goes to one of the RPM sense pins? If that's the case and the fans spin then you should not have a problem. Check fan speeds in Windows and if they react to GPU temperatures properly.

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Cooling
Noctua NH-D15
Cooling
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Phanteks Enthoo Pro
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post #8 of 10 (permalink) Old 10-11-2018, 10:54 AM - Thread Starter
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Quote: Originally Posted by Melcar View Post
The red cable goes to one of the RPM sense pins? If that's the case and the fans spin then you should not have a problem. Check fan speeds in Windows and if they react to GPU temperatures properly.
I just checked everything and the fans work as intended! Thanks a lot!
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post #9 of 10 (permalink) Old 10-11-2018, 11:09 AM
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Quote: Originally Posted by Iloveramen View Post
I just checked everything and the fans work as intended! Thanks a lot!
What is the pin order you are using? Same as I supplied or different? Normally red is a power lead, but computer wiring often does not use normal wire color coding.

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i7 980 @ 3.55GHz =PH-TC14PE w/2x TY-143 fans =Crucial Ballistix 3x4GB =GA-X58A-UD5 =ASUS GTX580 DirectCU II =Enermax Modu84+ =Define R2 w/3x TY-140 case intake fans; all PWM controlled by CPU fan socketPhanteks Enthoo Primo MoBo Rampage III Extreme CPUi7 980X
@ 4.0GHz =R1 Ultimate w/2x TY-143 fans =Dominator GT 6x2GB =Rampage III Extreme =ASUS GTX580 DirectCU II =TX850 =Enthoo Primo w/ custom castor base
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post #10 of 10 (permalink) Old 10-12-2018, 08:54 AM - Thread Starter
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Quote: Originally Posted by doyll View Post
Quote: Originally Posted by Iloveramen View Post
I just checked everything and the fans work as intended! Thanks a lot!
What is the pin order you are using? Same as I supplied or different? Normally red is a power lead, but computer wiring often does not use normal wire color coding.
The pin layout is the same. But strangely after reapplying thermal paste and reconnecting the fans they run at 100% all the time. Weird.
Edit: Fans run normal again. Just had to replug it again.

Last edited by Iloveramen; 10-12-2018 at 09:11 AM.
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