GeForce 8800 GTS 640

• Fan controller: ADT7473
• RivaTuner: Tool for monitoring and controlling the fan; Screenshot

  
  Restart.
  
  Best tick last checkbox, too.

• Power consumption
  
• Tech Demos
• CUDA Zone: GPGPU
• Graphics Plus Power Pack: CUDA/PhysX demos
• PhysX SDK: PhysX samples

Riva TNT

• If you get the error
  unknown field 'ioctl' specified in initializer
  when compiling the nVidia Linux driver 71.86.14 with kernel ≥2.6.36, use my patch.
  Thread @ nvnews