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How to add fan control to an HD4670? (hardware mod, not CCC tweak)

Discussion in 'AMD / ATI' started by TrentZ, Mar 3, 2009.

  1. TrentZ New Member

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    I'm trying to control the fan of an ASUS EAH4670. Since out of the box it can't control the fan, I disassambled the BIOS using Atomdis and using an hex editor added the corresponding command table to it (#39, SpeedFanControl). Still, the card can't change it's fan speed. I guess something i's lacking in the PCB, and from this guide I think that maybe it's possible to add the component that is lacking. The problem: I have no idea about electronics! I would very thankful for any help/pointers.


    PS: Here is a photo of the front & back of the reference PCB from ATi.
     
  2. PVTCaboose1337

    PVTCaboose1337 Graphical Hacker

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    So you cannot just change it in the CCC?
     
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  3. TrentZ New Member

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    No, even with ASUS SmartDoctor.
    The BIOS that came with the card had the SpeedFanControl command table empty.
     
  4. CJCerny

    CJCerny

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    How about a Zalman Fan Mate 2 fan controller?
     
  5. TrentZ New Member

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    That's exactly what I'm using right now, but I would prefer the speed adjusted to the temperature instead of being fixed. I'm getting something like 77º avg/78º max with Furmark using the fan mate.
     
  6. AlienIsGOD

    AlienIsGOD

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  7. TrentZ New Member

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    There are some 4670s that have fan control, for example the PWC and the Sapphire GDDR4.
     
  8. HossHuge

    HossHuge

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