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3 pin CPU fan to a 4 pin mobo

post #1 of 9
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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?
post #2 of 9
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
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.
post #4 of 9
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
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
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
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
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.
post #9 of 9
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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