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Solve : iMac Fan Speed control?

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He guys, I got a Mac OS X, and I have recently downloaded Smc-fan control. I use it to control my fan speed, and I am not sure what is the SAFE speed limit for the fan speed. The MAXIMUM is 4300rpm, and I think it might be too fast? Or is it not a GOOD idea to mess with fan speeds on Mac at all? You won't be able to increase the fan speed PAST a given maximum, so don't worry about speeding it up too much.Ok thanks...but when I sped it up too 4000 , the fan sound got quite loud. I'm not worried about the noise, but will it shorten my hardware or fan life?
Thanks. It will get louder, simply because it's spinning faster - perfectly normal and expected behaviour.
If it sounded DIFFERENT to normal - making a clicking or grinding sound - it would be a different matter.  Regardless, I can't see that a software program could ever speed up a fan beyond its designed maximum, it should never be possible.
Fan life shouldn't be measurably shortened by running at max speed all the time, your hardware should actually last longer (in theory, and not measurably longer) as it should run cooler.Okay thanks. He ;Dlped me a lot.No problem, glad we could help



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