There are many apps around that will control the fan speed of virtually any mac, and some that even change when the power source changes.

I've got a unibody MBP, and don't often use it on a desk, but love the 2nd graphics card. Only problem is it heats up too damn much.

Is there something out there that will set the fans at a certain speed depending on which graphics card I'm using?

Or even something that will launch an app depending on the card (launch SMCFanControl?)