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Why is my iMac Retina 5k fan running loud?

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iMac Retina 5k fan running loud

I made a bootcamp partition and put Windows 7 pro on it to run some games that I enjoy. I particularly love playing a game called Rift. I noticed though, that after just a few minutes of playing the fan ramps up to an audible level and then usually within a few more minutes it will ramp up to what I would imagine to be it's top end rpm (even louder). I was just curious if this is accepatable behavior for the unit. I don't want to overheat anything but if that is normal behavior, I will continue to use it for gaming.
 

Bigeric23

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Aug 17, 2010
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Re: iMac Retina 5k fan running loud

I don’t have a newer iMac, but mine has never been loud enough to even notice—regardless of what I was doing. . . . Maybe someone with a 5K iMac will have some additional input.