NOTE: Does not work on 2008 and earlier Mac Pros (1,1, 2,1 & 3,1)!! Changelog: V2b1 CPU Heatsink fan and Intake/Exhaust Fans now controlled separately. Target fan speeds are now shown in the control panel. Limits on max/min fan speeds (Simply resets to the lowest allowable value!) This is what it looks like: As you can see, the CPU Fan and Intake and Exhaust fans are completely independent! The V2 beta is here: http://www.concorde-photos.co.uk/macrumours/MPFanControlMarch2012V2.zip The V1 beta is here: http://www.concorde-photos.co.uk/macrumours/MPFanControlMarch12BETA.zip If that goes tits up, the old version is here: http://www.concorde-photos.co.uk/macrumours/MP2009CPUFancontolV0.7b.zip This software is based on the MBP Fan Control by this guy: http://www.lobotomo.com/products/FanControl/ It is better than smcFanControl because it is set and forget. It will only ramp up the fans if the temperature reaches a set point and allows the SMC to take over if you've set it too low (it sets the *minimum* fan speeds the SMC can run the fans at, the SMC still controls the *actual* speed of the fans, so it is safe). Use at your own risk, yada yada yada. Feedback, as always would be great. However, hopefully there shouldn't be any bugs, as I throughly tested over the last 6 hours :/. Have fun!