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3 pin CPU fan to a 4 pin mobo

post #1 of 9
10/14/06 at 2:18pm
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So I've decided to go with a CNPS9500 for my Core 2. However the mobo that I ordered (p5b Deluxe WiFi) has a 4 pin CPU fan connector (cnps9500 has a 3 pin).

Is there a way to plug the cnps9500 3 pin into the mobo's 4 pin port? Are there converters out there or do I need to get creative?
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post #2 of 9
10/14/06 at 2:21pm
no need for a converter, it just fits right in. the 4th pin is uhh, well i forgot but it isnt NEEDED and the 3 will fit just fine in the 4 pin
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post #3 of 9
10/14/06 at 2:26pm
Just plug it tn, or find another. Does it say CPU Fan on the connecter. If it isn't connected to the main fan plug, all it will do is create a black screen at startup, it will state that there is no CPU fan present and ask you if you want to continue with startup.
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post #4 of 9
10/17/06 at 11:23am
the pin will plug in just fine, there is a little slot on the 3pin that fits right onto the slot for the cpu fan on the mobo, it should be the 3 pins on the right on your mobo.
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post #5 of 9
10/17/06 at 1:56pm
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I would re-examine your choice of the 9500

It didn't impress me on my Pentium D, and it isn't impressing me on my Core 2 Duo. Unless you're picking it up for $30, you can do better for the cash.
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post #6 of 9
10/17/06 at 3:14pm
Quote:
Originally Posted by Thumper
I would re-examine your choice of the 9500

It didn't impress me on my Pentium D, and it isn't impressing me on my Core 2 Duo. Unless you're picking it up for $30, you can do better for the cash.
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post #7 of 9
10/17/06 at 4:03pm
Quote:
Originally Posted by alderez
So I've decided to go with a CNPS9500 for my Core 2. However the mobo that I ordered (p5b Deluxe WiFi) has a 4 pin CPU fan connector (cnps9500 has a 3 pin).

Is there a way to plug the cnps9500 3 pin into the mobo's 4 pin port? Are there converters out there or do I need to get creative?
Hi alderez,

I think the 4th wire is for the "smart fan" program or "quiet fan" mode on some motherboards. As others have stated. The 3 pin will work. The red is for voltage, black is ground and yellow for the rpm reading. The smart/quiet fan mode reduces the fan speed when not needed based on temperatures. At least that's what my motherboard manual says... I guess I can trust ASUS on this matter...

Take care and I hope this helped, :-)
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post #8 of 9
10/17/06 at 5:38pm
455buick; close but not entirely true.

The blue (4th wire) is for the mobo to adjust the speed of the fan for when EIST kicks in and/or temps go up. Basically it works as a fan speed controller but it's only for the Intel Stock Heat-Sin/Fan ONLY. it does not work with any other fan.

And yes, it's useless when connecting a Tuniq Tower 120 or a Big Typhoon, also any Zalman HSF.
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post #9 of 9
10/18/06 at 8:13pm
Quote:
Originally Posted by Nasgul
455buick; close but not entirely true.

The blue (4th wire) is for the mobo to adjust the speed of the fan for when EIST kicks in and/or temps go up. Basically it works as a fan speed controller but it's only for the Intel Stock Heat-Sin/Fan ONLY. it does not work with any other fan.

And yes, it's useless when connecting a Tuniq Tower 120 or a Big Typhoon, also any Zalman HSF.
Hi nasgul,

Thanks for the heads up for me and others!! When I read your post I remembered that only my stock Intel fan was able to use the 4 wire set up. I didn't like the auto control function however on my board. So I did not use the motherboard connection, just the psu molex connection.

Take care, :-)
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