I have a 9500GT that I would like to edit the fan speed. I got a new heatsink/fan for the graphics card, but the new fan does not spin fast enough. I need to change the fanspeed to higher rpm. In windows, I used the nvidia control panel to set the fan speed, but I have a hackintosh and cannot use any Windows software programs, so I need to manually edit the fanspeed in the BIOS. I saved the bios file with gpu-z and tried to edit the fanspeed with nibitor, but all the fan settings are grayed out. I was wondering what I am doing wrong here?