Reading fan RPM's

[TechTune]

Hey guys..

I was wondering if anyone knew what I should look for regarding molex connectors from hardware and on the motherboard to be able to view RPM's. I know a 3-pin molex will get you a fan reading, but where should it connect, and what if it's 4-pin?
The Rampage 2 Extreme supports reading fan RPM's throughout the whole computer and it's enabled in BIOS, but I think the guys who built this one perhaps messed up some connections.
I get alot of temp readings, but only the CPU fan gives me a fan reading..
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Anyone?

Michael

 

[Crispy]

You cant get a reading from a 4pin connection that's only a 12v, you need to have a 3pin plugged into the mobo from the fan and it read that info form the BIOS.

 

[TechTune]

Ahh, okey.. Thanks Crispy
Does that mean any fans with only 2 wires are unable to read rpm?

 

[thefabe]

From what I just read on Tomshardware it said 2 wires are for running the fan positive and negitive, the third wire reads the rpms. Fabe

 

[Crispy]

Ahh, okey.. Thanks Crispy
Does that mean any fans with only 2 wires are unable to read rpm?

As long as they can plug into the motherboard via a 3pin connection then yes.

 

[thefabe]

This is the diagram I posted my reponce from. Fabe

 

[th3r0ck]

use GPU.Z

google it

 

[TechTune]

Thank you all, always great help on this forum!
th3r0ck, heheh.. started using that on friday actually, very nice program.

 

[th3r0ck]

oppS!! then i am late!!