Is possible to add fan control to an ATi 4670 that doesn't have it?

[TrentZ]

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 it's lacking in the PCB, and 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.

 

[OmegaStalker]

what if you used a normal fan controller?

 

[TrentZ]

That's what I'm using right now, but obviously the fan doesn't adjust by temperature.

 

[themcman1]

That's what I'm using right now, but obviously the fan doesn't adjust by temperature.

You could use an m-cubed balancer thingy and put one of the sensors somewhere in the card (wheres would it be on the higher models)

Or you could find a cheaper alternate (fan controller) that has temperature sensors.