5k iMac fan noise

Discussion in 'iMac' started by bwsteg, Dec 22, 2014.

  1. bwsteg macrumors 6502

    Joined:
    Sep 25, 2012
    Location:
    Queens NY
    #1
    Hello everyone, I've noticed that the fan noise becomes apparent at times while I'm doing heavy webbrowsing. By this I mean multiple browsers with multiples tabs open in each. The fan is audible for a few minutes then quiets down.

    Is this normal? I have the i7 with 16gb ram, 512ssd and upgraded gpu.. Thanks
     
  2. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #2
    Flash content can do that.

    Scrolling through Facebook actually does consume quite some resources, due to the way it's coded. Monitoring through iStat Menus, I found that it pushed the CPU to 100%+ and also utilized quite a bit of VRAM.
     
  3. bwsteg thread starter macrumors 6502

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    Sep 25, 2012
    Location:
    Queens NY
    #3
    I see, I also just noticed that using youtube also makes the fans noisy. Which i assume is Flash?
     
  4. yjchua95 macrumors 604

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    Apr 23, 2011
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    #4
    By default, it's Flash.

    You can enable the HTML5 player by going to youtube.com/html5
     
  5. Nismo73 macrumors 6502a

    Joined:
    Jan 4, 2013
    #5
    Are you watching Youtube in Chrome or Safari? I've totally switched to Safari b/c it keeps things cooler as compared to Chrome. With my 680mx iMac, the temp needle really doesn't move much even with a few videos going at the same time in multiple Safari windows opened.
     
  6. frompast macrumors member

    Joined:
    Aug 15, 2010
    #6
    I just found the iMac's purring fan noise gone,
    when I lay it down. :eek:
     

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  7. redheeler, Dec 22, 2014
    Last edited: Dec 22, 2014

    redheeler macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #7
    I haven't noticed any increased fan activity at all since switching to Safari, even on 4K videos.

    YouTube will now default to HTML5 when it is supported by the browser.

    ---

    It's because of the way Facebook loads images and more posts as you scroll. If you scroll down fast it has to load a bunch of images and more posts at once and that's also what causes it to lag so much.

    By 100% you mean single core. I can't push Safari past 75% of a single core.
     
  8. letsudo macrumors member

    Joined:
    Jan 19, 2012
    #8
    Maybe if you upgrade to 32GB the fan noise will be gone?
     
  9. xgman macrumors 601

    xgman

    Joined:
    Aug 6, 2007
    #9
    No, it makes noise under various loads for a variety of reasons. I'm trying to ignore it.
     
  10. yjchua95 macrumors 604

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    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #10
    Yup, I mean single core.

    Full processor load would be 800% (100% for each thread. I've an i7. )
     
  11. letsudo macrumors member

    Joined:
    Jan 19, 2012
    #11
    If iMac retina has fan problem because of the squished in nature of all in one, I guess it might be worth consideration to buy a silent Windows desktop together with the Dell 5k monitor as an alternative if you don't really need the Mac OS.
     
  12. Branskins macrumors 65816

    Joined:
    Dec 8, 2008
    #12
    Omg that screen looks way too warm! All that yellowing :O

    :)
     
  13. foo.c macrumors newbie

    Joined:
    Nov 29, 2006
    #13
    I run multiple browsers with multiple tabs going all day long and there is 0 fan noise at all.

    This is with 13 tabs in Safari and 2 in Firefox.

    --- CPU Stats ---
    CPU temp: 47.125°C ▁▂▃▅▆▇

    --- Fan Stats ---
    Total fans in system: 1
    Fan 0 speed: 1196.0 RPM ▁▂▃▅▆▇
     
  14. hjalte, Dec 23, 2014
    Last edited: Dec 25, 2014

    hjalte macrumors member

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    Dec 23, 2014
  15. vladobizik macrumors 6502

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    Aug 21, 2012
    Location:
    Slovakia
    #15
    I have a maxed out version (i7, 4GB graphics, 3TB Fusion Drive). When running OS X and doing "normal" work (including things like Logic Pro X editing), it's completely silent. When I strain it a little bit, and this includes full screen flash video, the fan kicks in, but it's barely distracting (and barely noticeable when playing any audio). When gaming under Windows in Boot Camp, the fan kicks in immediately at presumably full speed, but that's expectable.
     
  16. bjmoose macrumors member

    Joined:
    Oct 4, 2011
    #16
    I have a maxed out one (1T SSD not Fusion); currently my Chrome has 11 tabs, my Safari has 6, and my FireFox has 57 (Tab Mix Plus allows rows of tabs). No fan noise, no CPU. I use QuickJava plugin in FF to disable Flash except when needed, as a result there's no significant load from having all this open.

    Try disabling Flash whenever you can - many YT videos etc. will run fine without Flash (HTML 5).
     
  17. bwsteg thread starter macrumors 6502

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    Sep 25, 2012
    Location:
    Queens NY
    #17
    I'm also noticing lots of lag when scrolling through webpages
     
  18. Cape Dave macrumors 65816

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    Nov 16, 2012
    Location:
    Northeast
    #18
    Flash sucks hard. I hate it. Steve was right about that abomination for sure. It should be abolished.
     

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