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Thread: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?




  1. #1
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    Default GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    The System Fan 2 four pin header seems to only put out 5 volts with a 3 pin fan connected to it as the fan spins slowly, 450 rpm max. Can anyone confirm this or what the problem may be? I've experienced the same on other Gigabyte boards I've owned also.

  2. #2
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    That's how it seems to work with automatic settings on Gigabyte boards but you can probably control that header with Speedfan, that works on both my P45 boards.
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  3. #3
    Acebmxer's Avatar
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    You can try ET6 also. But I believe gigabyte on setup 5v on sys fan 2 for what ever reason.
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  4. #4
    Lsdmeasap's Avatar
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    It is normal for Sys_Fan2 :(

    Not sure why, but it's seems this is always how it is.

  5. #5
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    Thanks for the help. I wish Gigabyte would change this as the Sys-2 Fan Header is useless for all practical purposes, leaving only two useable fan headers, not including the CPU header. Completely unacceptable on a $200 board !

  6. #6
    Lsdmeasap's Avatar
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    Send in a report, the more that do maybe they will change this. While you are at it ask them why they do that, thanks
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  7. #7
    rbmorse is offline Junior Member
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    SYSFAN_2 is a four pin header designed to control a variable speed PWM fan. If you connect a PWM fan to that header it will work as designed. On my EP-45 when used with a 12CM Arctic Cool PWM fan, the speed range is from about 950 to 1500 RPM depending upon the system load and thermal activity.
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  8. #8
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    Hiya,

    I'm about to hook up two Scythe Ultra Kazes [2000RPM, DC12V, 0.25 A] to the fan headers on my P67-UD4-B3 but I'm not sure if the headers can handle them properly. I've consulted the manual but unfortunately it does not say a word on supported cooling fans.

    So, is it safe to use the headers on the mobo for my UKs? If so, which headers would you recommend using?

    All your answers are greatly appreciated.

    Cheers,

  9. #9
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    Fan headers should handle upto 3amps
    Main Rig
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    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
    Samsung 320GB HD322GJ 7200 RPM 16M cache on Intel sata3 controller port2
    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
    CORSAIR CMPSU-850TX PSU
    Swiftech MCP655-B Pump
    EK Supremacy Cpu Block
    Swiftech Mcres Micro Rev 2 Reservoir
    Black Ice GTX Xtreme 360 Radiator





  10. #10
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    Default Re: GA-P67A-UD4-B3 Sys Fan 2 Only 5 Volts ?

    Cheers for the info!

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