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Tom's Hardware > Forum > Motherboards & Memory > Motherboards > [Solved] Push/Pull HSF setup How to connect to MOBO

[Solved] Push/Pull HSF setup How to connect to MOBO

Forum Motherboards & Memory : Motherboards [Solved] Push/Pull HSF setup How to connect to MOBO

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matrixinc   02-03-2012 at 10:03:58 PM

I have a ASRock z68 Extreme 3 Rev 3 motherboard with a Hyper 212+ HSF in a Push/Pull config.
The mobo has CPU_Fan1 power connector that is 4 pin.
It has CPU_Fan2 power connector that is 3 pin.
Why is the CPU_Fan2 connector not 4 pin?
Do i need the PWM function on the 2nd fan?
Will they run at the exactly the same speed to avoid turbulence?
The fans are identical in every aspect.

Just trying to educate myself here.

------------------------------ Haf 932 Advanced
ASRock z68 Extrm3Rev3
i5 2500k
8GB DDR3 1600
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inzone   02-03-2012 at 11:27:44 PM

OKGEAR 12" 4pin PWM fan Y cable Model FC444PWM-12
$3.99
http://www.newegg.com/Product/Prod [...] 6812123297

You could get this splitter and plug both fans into the cpu_fan1 socket on the MB.

Reply to inzone
matrixinc   02-06-2012 at 06:00:44 PM

I am assuming that I don't need to worry about the motor startup frying that circuit on the motherboard by using a splitter? I wonder what the logic is behind CPU_FAN2 only being 3 pin?

------------------------------ Haf 932 Advanced
ASRock z68 Extrm3Rev3
i5 2500k
8GB DDR3 1600
Reply to matrixinc
inzone   02-06-2012 at 06:30:34 PM
Best answer

The logic could be that the cpu_fan2 connector is linked to the cpu_fan1? So that if both connectors were occupied then the motherboard would treat the two as one and they would both speed up or slow down together.

Reply to inzone
matrixinc   02-07-2012 at 04:39:19 AM

Then I don't need a splitter I would just plug the 4 pin connector into the 3 pin CPU_Fan2 slot.

------------------------------ Haf 932 Advanced
ASRock z68 Extrm3Rev3
i5 2500k
8GB DDR3 1600
Reply to matrixinc
inzone   02-07-2012 at 07:29:59 AM

What you could do is plug the two fan connectors into those two cpu_fan ports and see how it works and if needed then you could go with the splitter. If the bios actually workd that way and controls those two fan ports then you would be all set. Not every board has two fan ports like that generally they just have the one.

Reply to inzone
matrixinc   02-17-2012 at 04:43:25 AM

Best answer selected by matrixinc.

------------------------------ Haf 932 Advanced
ASRock z68 Extrm3Rev3
i5 2500k
8GB DDR3 1600
Reply to matrixinc
Nikorr   02-17-2012 at 05:06:34 AM

This topic has been closed by Nikorr

------------------------------ Where there's smoke, there's fire...

 

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