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PSU - mainboard

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  • 26-03-2009 3:28pm
    #1
    Genghiz Cohen
    Registered Users Posts: 7,182 ✭✭✭


    Ok boards, I need a question answered.

    I have a new PSU and a fairly old mainboard.
    My last 2 PSUs had a little 3 pin connector to give power the a socket called which I believe is for the CPU fan.
    The new one does not.

    So, has there been a change in the standard connections for PSUs?


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    #2
    darealtulip
    Registered Users Posts: 1,346 ✭✭✭darealtulip


    Genghiz Cohen wrote: »
    Ok boards, I need a question answered.

    I have a new PSU and a fairly old mainboard.
    My last 2 PSUs had a little 3 pin connector to give power the a socket called which I believe is for the CPU fan.
    The new one does not.

    So, has there been a change in the standard connections for PSUs?


    CPU fan is by via the motherboard normaly. As is the sytem fan.


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    #3
    Genghiz Cohen
    Registered Users Posts: 7,182 ✭✭✭Genghiz Cohen


    I have a Asus P5B motherboard and a OCZ 1KW ProXStream Powersupply.

    What are the odds that the CPU fan just died right when I installed the PSU?


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    #4
    Anti
    Closed Accounts Posts: 12,401 ✭✭✭✭Anti


    you connected the fan connector from the psu to the cpufan pin ?


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    #5
    Genghiz Cohen
    Registered Users Posts: 7,182 ✭✭✭Genghiz Cohen


    Anti wrote: »
    you connected the fan connector from the psu to the cpufan pin ?

    I make no claims of being a hardware wizard, but this worked since 2006.

    attachment.php?attachmentid=75763&stc=1&d=1238087206


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    #6
    Solitaire
    Moderators, Technology & Internet Moderators Posts: 18,377 Mod ✭✭✭✭Solitaire


    Please tell me that diagram was a wind-up.

    If not can you please tell me how hard is it really to get broadband in the afterlife? I'm presuming you are in the afterlife, after wiring up the PSU to a fan header and dying in the ensuing explosion? :D

    You're pointing to a case fan header. You motherboard has more than one. As do most. But trying to connect PSUs to them usually ends up in FAIL. How did you manage it exactly?? There's no 3-pin Molex cables on a PSU... (well, there's one or two on the inside usually, but you're not allowed in there! :P)

    I think you might be confusing the fan pin headers with the ATX12V connector - the big square fella that connects to the 4-pin ATX12V connector that is hiding a little bit down from the top-right of your mobo, a bit below the PS2 port connector block at the top. That has nothing to do with fans. But everything to do with making your computer work. No idea how you could physically connect it to a much smaller 3-pin fan header though... :confused:


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    #7
    game4it70
    Registered Users Posts: 2,125 ✭✭✭game4it70


    Solitaire wrote: »
    Please tell me that diagram was a wind-up.

    If not can you please tell me how hard is it really to get broadband in the afterlife? I'm presuming you are in the afterlife, after wiring up the PSU to a fan header and dying in the ensuing explosion? :D

    You're pointing to a case fan header. You motherboard has more than one. As do most. But trying to connect PSUs to them usually ends up in FAIL. How did you manage it exactly?? There's no 3-pin Molex cables on a PSU... (well, there's one or two on the inside usually, but you're not allowed in there! :P)

    I think you might be confusing the fan pin headers with the ATX12V connector - the big square fella that connects to the 4-pin ATX12V connector that is hiding a little bit down from the top-right of your mobo, a bit below the PS2 port connector block at the top. That has nothing to do with fans. But everything to do with making your computer work. No idea how you could physically connect it to a much smaller 3-pin fan header though... :confused:
    The only thing that might be small enough to fit would be the connection for the floppy drive but that should not fit even with force.
    OP i dont know what exactly you have done but if its only the fan that borked count yourself very lucky.


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    #8
    Solitaire
    Moderators, Technology & Internet Moderators Posts: 18,377 Mod ✭✭✭✭Solitaire


    Fail.jpg


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    #9
    SickBoy
    Registered Users Posts: 3,529 ✭✭✭SickBoy


    It's for PSUs that allow you to monitor the RPM of the PSU fan. It doesn't power the PSU fan.
    If there's no cable coming from the PSU to fit that header then don't worry about it, it's just another header you can use for a different fan.
    The reason it's labeled is for the software within the BIOS and within windows to identify each fan and display it's status.


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    #10
    Genghiz Cohen
    Registered Users Posts: 7,182 ✭✭✭Genghiz Cohen


    There was a little 3-pin connector that fitted perfectly onto it.
    attachment.php?attachmentid=75811&stc=1&d=1238165018
    The red arrow points to the end of the cable, blue & black twisted, connects to a 3 pin plug, fitted perfectly onto the socket.


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    #11
    SickBoy
    Registered Users Posts: 3,529 ✭✭✭SickBoy


    Like I said, it's so your motherboard can monitor the status of the PSU fan....


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    #12
    Genghiz Cohen
    Registered Users Posts: 7,182 ✭✭✭Genghiz Cohen


    SickBoy wrote: »
    Like I said, it's so your motherboard can monitor the status of the PSU fan....

    So it's just my CPU fan that is busted?
    Whew...


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