FanCtrl is a software that allows you to automatically control the fan speed on your PC.

FanCtrl is easy to use, although the app is best for advanced users. You can cause damage to your computer by overheating or conflicting with other processors or other monitoring software. As an indie-developed app, not all motherboards are or can be, supported.
The app is laid out well and resides in the system tray with names for the motherboard and each fan speed and control that you can name. You can right-click on the icon to
Enable automatic fan control
Enable OSD (RTSS)
Normal
Silence
Performance