iMac loud fan during apple hardware test

Discussion in 'iMac' started by R3DH3R0, Feb 28, 2013.

  1. R3DH3R0 macrumors regular

    Apr 27, 2010
    I'm trying to test my ram on my new 2012 imac, and using the AHT. But during the test the fans start to spin really loud. They never were like this when I was gaming or doing anything intensive. I think I read on cnet or somewhere it's normal but I can't find that link anymore. Is this normal?
  2. Macman45 macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
    Yes...The whole idea of the AHT is to test the components in your Mac...It's simply running them up and is completely normal.
  3. R3DH3R0 thread starter macrumors regular

    Apr 27, 2010
    Even if they're running the majority of the test? I just haven't had to run an AHT on a computer in awhile so I don't remember. Just want to be sure. Thanks.

    Edit: btw, running extended test.
  4. Dreamboy macrumors member


    Sep 20, 2012
    My new iMac has just arrived and I think it will be a good idea to check with the AHT. Can you tell me how to do this test? Is some kind of application?


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