Should I be concerned about this noise on my iMac?

Hi... my iMac was a sound I don't know if I should be concerned.  I thought that it was the hard drive initially, but I had just replaced it with a new SSD, and the computer always does this sound:

https://drive.Google.com/file/d/0ByFf6-x8MpvGa2VBUGpfeUVJNTg/view?USP=sharing

The machine worked very well for a while, any ideas would be greatly appreciated.

Thank you!

It looks like the fan noise... a fan who has a curved blade, a fan with a bad influence or a fan who has blade hit something.

Tom

Tags: Mac

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