Hi everyone. My first post here. I am the proud new owner of a refurb 27" Core i7 iMac after 20 plus years as a PC/Windows user. I am getting familiar with the computer and am trying to figure out what is "normal" sound wise for a Mac. I was told when shopping that the computers are silent -- which didn't make a lot of sense because the thing has moving parts! Still I see a lot of posts about noisy hard drives and loud fans, etc. that people are complaining about, so I guess I am trying to figure out where my computer falls in the spectrum. First, the fan. It sounds pretty normal to me, and definitely MUCH quieter than the fan on my old Dell. Some people talk of no fan noise at all. I'm in a quiet room and when I start the computer or wake it up from sleep, the fan kicks in and the hard drive spins (as I imagine it should). I'm in a very quiet room and what I hear is a soft "whirring" fan sound. If there is music on or some ambient background noise, I don't hear much. I assume this is typical, but wanted to check if for some reason I should expect there to be total silence at any point (other than when sleeping). Second, the hard drive. I have a 2TB Hitachi drive and when it is quiet in the room I can definitely hear it "crunching" a little when accessing. It's not loud, but noticeable if there is no background noise. It doesn't sound abnormal to me -- no clicking or clunking, just normal hard drive access sound -- but again, I was lead to believe that I shouldn't hear any hard drive noise, which I imagine may be a little bit of an exaggeration. Still I was hoping to get some feedback. Are the hard drives supposed to be silent? I never hear any hard drive noise in an Apple store, but then they are usually so noisy I'm not sure I would know if there was any noise coming from the drive. Thanks for your input.