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08-12-2011, 03:29 PM
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#1 |
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Member (6 bit)
Join Date: Mar 1999
Location: Durham, NC USA
Posts: 57
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cpu fan to Mobo connect
My cpu fan has a 3 pin connector. My motherboard has a 4 pin connect What should I do?
Last edited by tom; 08-12-2011 at 03:33 PM. |
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08-12-2011, 03:48 PM
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#2 |
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Member (9 bit)
Join Date: Jun 2011
Location: Marietta, GA
Posts: 338
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CPU fan has to be 3 pin on your mobo read it has to say CPU fan
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08-12-2011, 04:12 PM
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#3 |
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Member (11 bit)
Join Date: Feb 2003
Location: Tucker Ga. USA
Posts: 1,358
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What does the motherboard manual say about it? they should cross reference a fan manufacturer and part number since it is a part unique to the board.
Most are 3 pin using a white molex shell that matches with a removable part, generally white also. Worst case is hooking the fan up to +12 and running it wide open all the time. |
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08-12-2011, 05:58 PM
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#4 |
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Techphile.
Join Date: Nov 2003
Location: San Francisco Bay
Posts: 6,546
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Don't worry about it. It will still work fine. The fourth pin is for a special type of voltage control, Pulse Width Modulation which regulates speed which is not absolutely necessary. Depending on the BIOS, your fan will either run at full speed all the time or you will be able to regulate it. Either way you will be fine.
If you want this this type of speed control then you need a CPU fan with a four pin connector. This is the only way with certainty that you will be able to regulate your CPU fan speed.
__________________
Asus P8P67 WS Revolution | Intel 2600K @ 4.7 GHz | Win 7 Pro 64 |8 gigs Corsair 1600 | Two Diamond 6990's in Crossfire| Corsair AX1200 | Thermalright Silver Arrow | Western Digital Black 2TB 64 meg cache | Lian-Li PC-A71B | Logitec Z-5500 | Three Asus 26" VW266H monitors running under Eyefinity | Last edited by David M; 08-12-2011 at 06:06 PM. |
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08-13-2011, 01:50 AM
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#5 |
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the DUKE!
Join Date: Mar 2006
Location: Cocoa, Florida
Posts: 1,596
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David, is that supposed to work with programs like Cool 'n' Quiet? Whereas; if you don't have a cpu fan with a 4pin connector Cool 'n' Quiet won't operate properly?
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08-13-2011, 09:39 AM
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#6 |
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Techphile.
Join Date: Nov 2003
Location: San Francisco Bay
Posts: 6,546
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I'm not sure if Q-fan or Cool N Quiet requires that fourth pin. glc probably knows.
I'm looking around for an answer. |
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08-13-2011, 10:39 AM
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#7 |
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Forum Administrator
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Premium Member
Join Date: May 2000
Location: Joplin MO
Posts: 41,159
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No idea - I always use 4 pin fans on 4 pin headers and 3 pin fans on 3 pin headers.
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