Questions about controlling fans.. using programs like smcFan Controll

I am in Brazil and the high of the day is like in the 80's so my temps on my MacBook Pro jump to 150 F, I was wondering if I should use a program to increase my fan speed. For some reason even if the temps jump to 150 (F) my Mac doesn't up my fan speed. Is that normal? Should I use some program, such as smcFan Control to up my RPM's on the fans?
Thanks for the responses!

Yes, from anecdotal reports here that seems to be true, but it's not much sooner — just a little.
But it isn't the operating system that makes the difference; it's that the hardware itself is tuned a little differently. From the fact that your machine was able to run OS X 10.5.8, I was able to tell that it wasn't one of the newer machines. It may be that the threshold of danger from overheating with the i5 and i7 processors is a bit lower than the 105°C/221°F for your Core 2 Duo; I don't know for sure.

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