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how many 120 fans off 1 molex ?

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  • 07-06-2008 7:45pm
    #1
    MooseJam
    Closed Accounts Posts: 5,111 ✭✭✭


    I have 8 120 fans in my case, 5 are powered off the board and 3 off molex, they spin faster off molex for whatever reason so I'm gonna power them all off molex, I only have 1 free though and a few splitters, is 5 120 fans off one molex ok ? how many could 1 molex power ?

    these are the fans I'm using http://www.komplett.ie/k/ki.aspx?sku=316880
    they really are whisper quiet, have 8 of them going and there's just a pleasant humm , not objectionable at all, I haven't installed the controller I bought with them cause there's no need, I will at some stage though cause it looks cool. So if you are in the market for a few fans buy NorthQ Silent Tornado's , they are the business !


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    #2
    Shiny
    Registered Users Posts: 2,259 ✭✭✭Shiny


    A typical 120mm fan will consume ~3Watts.

    A single molex can usually drive 2+ hardrives which are
    around 10watts each.

    20/3 = ~6 Fans.

    But the fans have no "load" and no peak power other than
    startup so I would say you are more than fine with 8.


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    #3
    MooseJam
    Closed Accounts Posts: 5,111 ✭✭✭MooseJam


    cool , I installed a controller I bought - > http://www.komplett.ie/k/ki.aspx?sku=328278
    and it's woefull, wouldn't even power one fan nevermind four, don't know how they can market it, I have it monitoring temperature thats all it can do, don't buy one ! looks good though, anyway it's back to molex for my fans


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