NVIDIA Inspector, OC and controle your Nvidia card V1.9.5.9

Nvidia inspector is a very small tool that do help a lot, its basically an nVIDIA GPU-Z tool with a overclocking feature plus a fan speed control option, the new version include some fixes and improvements, you can give it a try.

Orbmu2k has released this program, which seems to NVIDIA graphics cards and offers information on tools for GPU and memory clock speed, GPU operating voltage and fan speed increase.
This is a quite simple user interface with an application that will rely entirely NVIDIA drivers, so there is reason to be downloaded from NVIDIA's website WHQL-certified driver. The program offers roughly the same information as the GPU-Z program, but with a few extra spice box.
New Version 1.9.5.9: (Hotfix)

fixed function 'ChangeWindowMessageFilter' not available on XP
fixed frame rate limiter is already included since 280.26+ drivers

Version 1.9.5.8:

improved profile combo handling to fix searching while dropdown is open will not change selected profile
added image upload feature to driver profile settings toolbar
holding CTRL while launch Monitoring from mainapp will start Monitoring standalone
[you can close inspector in this case without closing monitoring but they wont share sensor readings anymore]
for profile settings you can drop a shortcut to the game EXE now and it will open the assigned profile