By default the Nvidia K2100m alway running with full speed on my Dell (667MHz) per 50 degree C. After performance tuning with AGPM, It is running cooler on my Dell with temperatures under 50 degree C and speed (162/202/405/418/666 MHz) Demo:
The detail guide at: https://osxlatitude.com/index.php?/topic/7807-nvidia-gpu-performance-tuning-with-agpm/