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Heatsink fan PWM question

Discussion in 'Hardware' started by HTF, Jan 2, 2010.

  1. HTF

    HTF Byte Poster

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    Hello,

    As my previous fan was noisy I bought this one:
    AK-860CP

    - and I have question regrading PWM as it state: "Fan speed 600 - 2200 RPM (PWM controlled)" but since I've installed it is operating with:
    - CPU cooling fan 2312 RPM continuously, is it normal, do I have to set something in the BIOS why the fan speed is constant, even if the PC is not over loaded?

    Regards
    Sebastian
     
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  2. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    Is the CPU temperature OK? Perhaps it requires this speed to keep the CPU safe.
     
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  3. HTF

    HTF Byte Poster

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    Thx for reply

    Tmp looks fine but I noticed now different tmp bettwen cores?!

    CPU - 29 °C (84 °F)
    CPU #1 / Core #1 - 32 °C (90 °F)
    CPU #1 / Core #2 - 39 °C (102 °F)
    Cooling Fans
    CPU - 2312 RPM

    - maybe indeed that's normal operating tmps
     
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  4. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    Have you tried adjusting the fan controler?

    if you BIOS has the facility it may be set fast or high for cpu fan settings you can adjust this if you want. It will be in the hardware section.

    Where did you get those temp readings from? I hope it wasn't speedfan. Speedfan is very ubreliable.
     
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  5. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    hiya,

    nominal difference mate.

    found a good link here.
     
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  6. HTF

    HTF Byte Poster

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    Hi,

    Software Everest Ultimate Edition. There is no any fan controller. If I'm right there is option in the BIOS "quiet fan" but only for 3 pin fans and mine is unfortunately 4. I will have to check

    - any way it will act as a server so I'll 'rack up' in corridor so I wont hear it ;)
     
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  7. Raffaz

    Raffaz Kebab Lover Gold Member

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    IIRC you can not control fan speed when the fan is connected to 4 pin molex connector. It needs to be connected to the 3 pin connector on the mobo to control this. You can get converters to allow you to do this. :D
     
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  8. HTF

    HTF Byte Poster

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    OK but the only 3 pin connector is for a chassis fan is it the one, should I connect to this one instead of 4 pin fan connector?
    Can you sent me some example link for this adapter as I couldn't find it?

    Reg
     
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  9. Raffaz

    Raffaz Kebab Lover Gold Member

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    What mobo do you have?
     
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  10. HTF

    HTF Byte Poster

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  11. Raffaz

    Raffaz Kebab Lover Gold Member

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    If you have a look in the manual the CPU fan is labeled as number 5 (4 pin, not a molex as i thought). Page 24 of your manual states:

    Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
    CPU fan still can work successfully even without the fan speed control function.
    If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
    motherboard, please connect it to Pin 1-3

    Also, check page 36 of the manual,

    Cool ‘n’ Quiet
    Use this item to enable or disable AMD’s Cool ‘n’ QuietTM technology. The
    default value is [Auto]. Configuration options: [Auto], [Enabled] and
    [Disabled]. If you install Windows® VistaTM and want to enable this function,
    please set this item to [Enabled]. Please note that enabling this function may
    reduce CPU voltage and memory frequency, and lead to system stability or
    compatibility issue with some memory modules or power supplies. Please
    set this item to [Disable] if above issue occurs.

    So, basically connect the fan to the 4 pin connector on the mobo, and set to enabled in BIOS
     
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  12. HTF

    HTF Byte Poster

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    Ok thx once again for help I'll check this later on but as far I remember this Quite Fan option was disabled and greyed out as it's only available when fan is connected to 4 pin connector but I'll double check...
     
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  13. Raffaz

    Raffaz Kebab Lover Gold Member

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    If your fan only has the 3 pin connector then i think your not going to be to use it, im guessing the 4th wire is for the controller, maybe look at getting a fan with 4 pin connector.
     
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