Imac 2017 4.2GHz Fast and hot

Discussion in 'iMac' started by cica114, Sep 14, 2017.

  1. cica114 macrumors newbie

    cica114

    Joined:
    Sep 14, 2017
    #1
    Dear You!

    Can anyone with a 27inch IMac 2017 with 4.2 processor help me to figure out if these temperature is normal,or if I have a not so good processor?
    I am aware that the i7 7700K processor is fast and hot, but I was puzzled to see all 4 cores going up to 100 Degrees while browsing my Lightroom library...goes back with fan coming in,doesn`t stay there...maybe thats ok? and I shouldn_t be worried?!

    I would ask you to do the same Benchmark test,with the same temperature tool,and I hope to sea then,if these core degrees are just normal or not.
    Cinebench Test 15 free download at https://www.maxon.net/de/produkte/cinebench/
    Macs Fan Control free download at https://www.crystalidea.com/macs-fan-control

    If you could do a similar screenshot like mine for comparison, I would appreciate your help a lot!
     

    Attached Files:

  2. kdoug macrumors 6502a

    kdoug

    Joined:
    Jun 2, 2010
    Location:
    Iowa City, IA USA
    #3
    According to this site that's normal and could go higher before it throttles. http://appleinsider.com/articles/17...5k-imac-impresses-with-desktop-class-graphics
     
  3. cica114 thread starter macrumors newbie

    cica114

    Joined:
    Sep 14, 2017
    #4
    Thanks!
    I did read into this long threat...I`m not worried about fan noise...it was the temperature spiking up to 100 which concerned me.
    --- Post Merged, Sep 14, 2017 ---
    Thanks a lot for the article! In the last two weeks I found all kind of useless praises without content,a non existing :apple: Community,an Apple support which could not tell me what the article states...although I hope that it doesn`t go higher than 97 Degrees :eek: According to Intels specification for the i7 7700K T Junction is 100 Degrees C . According to the article I can finally cool down :)and enjoy my superfast hot stuff! I`ll call him Hellboy!
     
  4. Fester1952 macrumors member

    Fester1952

    Joined:
    Jul 22, 2012
    Location:
    Adelaide, Australia
    #5
    With Cinebench my CPU temps hit 97 and GPU 67 indicated by iStat Menus, I find that normal, my 2014 iMac did the same.I have a Logitech Universal Remote that uses Silverlight for the Mac app and for some reason that drives the CPU temperature up to around 100 for as long as I have the app open. The fan noise annoys me more than anything else, I have just accepted the temperatures to be the norm for the i7.
     
  5. EugW macrumors 65816

    EugW

    Joined:
    Jun 18, 2017
    #6
    That is the exact same behaviour I got with the i7 7700K iMac, when scrolling extensively in Photos. I also got the fan going with short video exports too. While it may be expected and ultimately safe, it was annoying to me so I returned it and got the i5 7600 instead.
     
  6. cica114 thread starter macrumors newbie

    cica114

    Joined:
    Sep 14, 2017
    #7
    Thank you...namaste...now I at least do not feel all alone.
    My machine was now 9 days on holiday at the reseller for testing,conclusio: "Apple hardware test passed" So Apple says all this is normal behaviour, Intel says that is normal(just adjust your fans) and I wonder why previewing pictures(not only in Lightroom,even in "Preview" gets the CPU heat up so much, whereas my 10 year old Mac Pro 1.1(with dual 2.66 Intel Xeon processors do this with no temperature change.
    I thought switching of Turbo Boost could help,but I have no idea how to do it and the technician guy at Apple said that`s not recommended.
    EugW...does the i5 7600 change this temperature situation? Glad if you give me a link to your experience! I`m not talking about noise,for me this windbrise is quite acceptable...I`ve had other noises throughout 30 years of studio life ;)
    --- Post Merged, Sep 16, 2017 ---
    Thanks!
     
  7. EugW macrumors 65816

    EugW

    Joined:
    Jun 18, 2017
    #8
    The i5 7600 is much cooler. We have since learned in that iMac noise thread that the 7600K usually also runs pretty cool, but the absolute coolest is the 7500.
     
  8. xWhiplash macrumors 65816

    Joined:
    Oct 21, 2009
    #9
    I remember talking to you regarding the i7. I did the same thing you did. I figured out with my custom built 6-core Windows PC, my 6-core 2010 Mac Pro and my i7 MacBook Pro that I have enough CPU performance for what I need. So I decided on the i5 and glad I did because the i7 was pretty annoying even to me.
     

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