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Where to plug my fans in my MoBo?


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#1
GhostLoad

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I just upgraded my PC and in doing so I got some slick new fans to keep her cool. There's a bunch of spots on my board to connect fans, but when I use the MoBo's included software to adjust and monitor fan RPMs I can see only 2 of the 5 I have in my tower.

My question is this, can someone please help me out in where exactly on my ASUS P8Z68-V Pro/Gen3 motherboard I should connect my fans? I have; 2x 120mm's on my heat sink, 1x 140mm in the front of my case, 1x 120mm in the back of my case, and 1x 230mm on the side door.

The 1x 140mm, I don't know the make or model of (it's the one that came with my Thermaltake Armor + case a few years back). 1x 120mm came with my Cooler Master Hyper 212 Plus, 2x 120mm are Scythe Ultra Kaze's, and the 1x 230mm is a BitFenix Spectre.

Thanks!

Edited by GhostLoad, 22 March 2012 - 06:23 AM.

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#2
Neil Jones

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If the fans connect to the 4 port molex connectors from the power supply (and not to the main board) you'll have no way of controlling them through sotware.
Most boards tend to only have room for two 3 pin fans including the processor cooling fan.
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#3
GhostLoad

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Only the 140mm fan in the front is plugged directly into the power supply, the other 4 I plugged into my motherboard but can only control 3 of them (even though the software recognizes 3 are plugged in).
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#4
phillpower2

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Hi GhostLoad

The 4 pin fan headers on your MB will allow you to control the fan speeds using software but the 3 pin type will not ( check in your BIOS for these settings )

Pin #1 is ground
Pin #2 is +12V and speed control
Pin #3 is the Sensor
Pin #4 is a programed speed control
On most systems the speed control on pin #2 is the "cool & quiet"
the "sensor" is the fan and temp
The #4 pin is for a programmable speed control

FWIW: You can use a 3 pin type connection on the 4 pin type header with no detrimental affect, it will only mean that fan control software will not work.
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#5
GhostLoad

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IIRC most of the fans I put in have 2-pin connectors though...
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#6
phillpower2

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IIRC most of the fans I put in have 2-pin connectors though...

See 2.2 and 4.13 for pin types and configuring fan speeds http://uk.asus.com/M...P8Z68V_PROGEN3/

The two pin type have only basic power and ground and they have no means of controlling them.
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#7
GhostLoad

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So then I'm kinda SoL on controlling the RPMs of my 2-pin connected fans? What if they're 3-pin?
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#8
phillpower2

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An example of how to control multiple 3 pin fans http://www.ebuyer.co...-case-fans-mfpp
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#9
GhostLoad

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An example of how to control multiple 3 pin fans http://www.ebuyer.co...-case-fans-mfpp


My motherboard comes with software that lets me control the fans though, called ASUS AI Suite II. I was really hoping to not have to spend additional money.
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#10
phillpower2

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An example of how to control multiple 3 pin fans http://www.ebuyer.co...-case-fans-mfpp


My motherboard comes with software that lets me control the fans though, called ASUS AI Suite II. I was really hoping to not have to spend additional money.


Yes I am aware of this as per my post #6

See 2.2 and 4.13 for pin types and configuring fan speeds http://uk.asus.com/M...P8Z68V_PROGEN3/

The two pin type have only basic power and ground and they have no means of controlling them.


Can you provide a link to the type/s of 2 pin fans that you have please.
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#11
GhostLoad

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In my 1st post I put links in each of the different types of fans (so that you could click to see which ones I meant).
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#12
phillpower2

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You could try using Speedfan for controlling the fans that AI Suite is not controlling.
This tutorial is MSI related but the principles are the same http://forum-en.msi....?topic=109858.0
The only other option I can think of is using splitters, see http://www.overclock...ad.php?t=377232
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