From the Publisher:

smcFanControl lets the user set the minimum speed of the build in fans.
So you can increase your minimum fan speed to make your intel mac run cooler.

However in order not to damage your machine scFanControl let's you not set minimum speed to a rate under Apple's defaults. In addition to that fans are still in automatic mode, so the speed of your fans will increase, if CPU load gets higher.

• Displays temperature and fan speed in the menubar

• Apply different fan-settings with just one click

• Let's you set different minimum speeds for every fan seperately and save them as favorites

• Autoapply different fan settings when the powersource changes (macbooks only)

• Sourcecode included! Extend it and change it to your needs

                                                 



Personal Note: I constantly have this application running, it eases my ming to just my menu bar and it tell me at what speed my fan is running at and the current temperature reading. Very simple but accurate.
Recommended.