12 Replies Latest reply: Jul 16, 2012 3:15 PM by leebrendalee
dancingeyes Level 1 Level 1 (0 points)

I just purchased the new 27" iMac, and it runs very hot to the touch. Is that normal? Should I be concerned?


iMac, Mac OS X (10.7.2)
  • 1. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    AnaMusic Level 9 Level 9 (57,005 points)

    If you are concerned, give AppleCare a call. You have 90 Days Free Telephone Support on a New Mac...

     

    ( 3 years if you have the AppleCare Protection Plan.)

     

    http://www.apple.com/contact/

  • 2. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    ssls6 Level 4 Level 4 (2,715 points)

    Mine get's pretty warm.  The benefit of an aluminum case is it's heat conduction properties.  If your fans sound normal then you're probably fine.  You can go to the widgets screen (F4 on my keyboard) and look at the istat widget...your max temps should be in the 60C range and the fans around 1k rpm for normal stuff, heavy GPU or CPU work will kick up the fans and your max temps push 70C.

  • 3. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    rohitbhatia Level 1 Level 1 (10 points)

    apple has an alluminium body because of which it gets hot and cold very quickly i.e sensation of being hot

     

    use isate nano check the actual sate of computer temperature

    well for your knowledge ( not sure ) apple devices automatically goest to sleep mode if it becomes to hot

    well i t would be better if you check the operating temperature by downloading istate nano

     

    meanwhile if you forgot when you buy your mac there is a lamination on your screen check whether if you have removed it from the place where the air is realsed out i.e upside backside of the monitor

  • 4. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    Silly rabbit Level 4 Level 4 (2,980 points)

    Normal running temp is around 60-65'C (140-150'F) sometimes a little hotter after extended heavy use. Install a free widget called iStat Pro to check your operating temps. If it is on the 80's you should concerned.

  • 5. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    dancingeyes Level 1 Level 1 (0 points)

    Thanks! That helped a lot. I have the widget now, and all the temps seem to be within the normal range you suggest. The warmest is the GPU diode, which runs around 70 degrees or so. I read in other posts too that I should be concerned if it gets above 80 degrees, so I think all is well. Thanks all for your feedback! Much appreciated.

  • 6. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    dancingeyes Level 1 Level 1 (0 points)

    Yes, I removed the lamination. Thanks for the reminder.

  • 7. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    Pokharel Level 1 Level 1 (15 points)

    iMacs are made to be the quietest systems possible still revamping the most possible taskforce could be offered in such an All-in-one beauty.

     

    Since the sensors corresponding to the Graphics and HD respond realtime heat generation and spread across the internal components in use, the fans automatically begin to blow the hot air over the components towards the upper part of the iMac. Which is why the upper back of the iMac is natuarally feels like overheated but it's not. Eventhough you feel like you may burn your fingers (infact you will if you keep feeling to the hottest spots), it's not the real sceanario inside to the real components. It's natural that you may feel your hands almost burning while pressing upper iMac. At this is the real ground, it's always wise to see if the in-effect remperatures of different processing components inside the iMac are upto the accepted levels as has mentioned by Silly Rabbit i.e. 60-65'C (140-150'F).

     

    You may prefer some handy temperature wedgits or apps to see if the temperature falls somewhere between 60-65'C (140-150'F) then there is nothing to worry. In case you observe the temperatures exceeding in any one of the components and this is the case in every operation, such as even after turning off the computer and turning on and working again the same as before and still ovserving the same temperature that keeps exceeding, simply setup Apple Support - http://www.apple.com/support/ or call for technical support for further arrangement and look into the matter. In case you have to make a call do not forget to mention what component has exceeding heat being observed which helps figure out the most probable causing factors.

  • 8. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    Pokharel Level 1 Level 1 (15 points)

    iMacs are made to be the quietest systems possible still revamping the most possible taskforce could be offered in such an All-in-one beauty.

     

    Since the sensors corresponding to the Graphics and HD respond realtime heat generation and spread across the internal components in use, the fans automatically begin to blow the hot air over the components towards the upper part of the iMac. Which is why the upper back of the iMac is natuarally feels like overheated but it's not. Eventhough you feel like you may burn your fingers (infact you will if you keep feeling to the hottest spots), it's not the real sceanario inside to the real components. It's natural that you may feel your hands almost burning while pressing upper iMac. At this is the real ground, it's always wise to see if the in-effect remperatures of different processing components inside the iMac are upto the accepted levels as has mentioned by Silly Rabbit i.e. 60-65'C (140-150'F).

     

    You may prefer some handy temperature wedgits or apps to see if the temperature falls somewhere between 60-65'C (140-150'F) then there is nothing to worry. In case you observe the temperatures exceeding in any one of the components and this is the case in every operation, such as even after turning off the computer and turning on and working again the same as before and still ovserving the same temperature that keeps exceeding, simply setup Apple Support - http://www.apple.com/support/ or call for technical support for further arrangement and look into the matter. In case you have to make a call do not forget to mention what component has exceeding heat being observed which helps figure out the most probable causing factors.

  • 9. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    Silly rabbit Level 4 Level 4 (2,980 points)

    You are most welcome! Macs work too well for Windoze L/users to believe. As Pokharel stated, they are made to be quiet and the aluminum body is made to help dissipate the heat, which makes them feel hot and radiate some heat. Just enjoy your Mac! Too many computer users (about 90%) have no idea what they are missing!

  • 10. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    dancingeyes Level 1 Level 1 (0 points)

    True indeed. I haven't used a PC in over a decade, and don't miss Windows at all!

  • 11. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    jenniferfromhelensvale Level 1 Level 1 (0 points)

    My new MAC gets hot at top back but not a the bottom its noraml everyone say

     

    Jennie

  • 12. Re: Is it normal for my iMac (new 27") to get quite hot to the touch?
    leebrendalee Level 1 Level 1 (0 points)

    Thank you very much for this post!! I was very very concerned.  When facing the imac 27inch, top right side at the back..very top is very hot to touch and yes you cannot leave you hand there for more than 10 seconds.  Only in that one spot.  I installed a fan program and my temperature is pretty good at 44C, I've increased the fan speed so it's dropped a few degrees. 

    My question: What should the speeds actually be?  Currently I have them set this way

     

    ODD:1544

    HDD:2389

    CPU:1430

     

    By the way, what is ODD?

     

    So back to the heat problem, I have an external drive attached which is always accessing it downloading movies, music, etc, I asked the mac dude if this would cause it to overheat and he said no.  I have another 27i beside me on the desk and that one does NOT get hot at all which is why I am concerned about this one.  However, the other one doesn't do anything.  This is the main machine and like I said accesses the external hd all day n night long.

     

    I was so concerned about the heat that I started shutting it down everynight. 

    So if this is normal than I will just let it be and will donate to this app, smcfancontrol.  Unless someone tells me there's a better one, this one seems to work well.

    Thanks,