NVIDIA GeForce 197.13 Drivers Fix Fan Speed Issues
 

NVIDIA has just released the GeForce 197.13 Beta drivers for GeForce 6, 7, 8, 9, 100, 200, 300-series and ION desktop GPUs, but not for the new GTX400 series. According to NVIDIA, this driver resolves fan speed issues reported with version 196.75 drivers.

http://en.expreview.com/2010/03/17/n...sues/6878.html