Modifying fan settings in the VGA BIOS

[sekrit]

I installed a nVidia GT 640 1024 DDR5 into a Mac Pro 3,1. I don't have any plans for overclocking or gaming. But the stock Nvidia fan is noisy even at idle use. Card only has a two pin power cable to the fan.

Can I edit the BIOS fan settings and make it run at a slower speed? Settings in the BIOS for the fan adjustment is Min 16 and Max 25. I am not sure what these settings mean. How do I make the fan run slower at idle?

Thanks

 

[maflynn]

Macs don't have Bios,, they use EFI and to my knowledge that's not accessible.

 

[sekrit]

Macs don't have Bios,, they use EFI and to my knowledge that's not accessible.

Sorry if my post was not clear enough. I was asking about modifying the VGA BIOS, not MAC.

 

[lowendlinux]

last time I modded a two pin I soldered a Zallman rheostat fan controller to it.

 

[sekrit]

last time I modded a two pin I soldered a Zallman rheostat fan controller to it.

Thanks pal! Installed Zalman fan speed controller and the noise is gone even at the highest speed rating. Card idles at 46C.