Nvidia Control Panel, GPU-Z, etc.Follow

Back when I got my new 580, I decided to monitor the temperatures a bit more, keep an eye on how things are going. My two 8800s burned up previously.

I notice when I start playing games that the temperature will increase, up to about 60-65C but the default automatic fan control will only increase very slightly. I rarely see it above 55%. If I turn on manual control and increase it up to 70-75%, the noise level is not that different, but the temps drop to about 45-50C. Everything I've read about the cards say 60-70C range is not going to hurt it. But I'm just curious if there was a way to modify how fast it ramps up? I remember before I swapped the graphics cards, when ever I did any graphics intensive games the fans would wind up to nearly 100% and my case sounded like a jet engine. Now it just barely increases if I'm playing games.

Currently using Nvidia Control Panel for the fan stuff and GPU-Z to monitor temperatures.

Isnt there an option in Nvidia control panel (Im guessing your running the one that allows OC) to setup custom profiles? Make one for games and one for idle/browsing. Also Some fans dont run at max speed to prolong their life.