What is a typical Hard Drive fan speed when the temp is around 100 on a 24 inch iMac 9,1?
I have three iMacs;1) Mid 2007 20 inch (7,1), 2) Early 2009 24 inch (9,1), and a late 2009 27 inch (10,1). The 20 & 27 inch models have a hard drive fan speed of around 1200 RPM when the temp is in and around 100 degrees. My 24 inch is around 1600 RPM. I purchased the 24 inch used, and the original owener had to take it in for repair due to a high fan speed right before I took posession. Apple replaced the logic board, LCD, Fan, and I think a fan controller. When I got it, I thought the fan sounded just a little loud. I have not been able to determine if 1600 RPM is normal for this model becuase it was set higher by Apple, OR if something else is wrong. I have not found any posts or anyone knowledgeable. I have found more information about users wanting to speed up the fan. Note, I have tried an SMC and PRAM reset. The are all running Lion 10.7.2.Note that the hard drive temp sensor appears to be working. For example, if the machine has been off for a few hours, the HD temp is near room temp. If on for a while, the HD temp runs around 100 degrees. No hard drive swaps that i know of. It came straight from the Apple Store repair to me.
iMac, Mac OS X (10.7.2), model identifier 9,1