Fanless Design

Discussion in 'MacBook' started by Wackery, Mar 28, 2015.

  1. Wackery, Mar 28, 2015
    Last edited: Mar 28, 2015

    Wackery macrumors 6502a

    Feb 1, 2015
    Does anyone know how the cooling of the new 2015 Macbook work? Is the interior completely sealed off from the outside world (relatively of course) like debris and dust, or does it have passive vents around the hinges to let some air out?

    I absolutely hate dust in my computers and this is a big selling point for me, does anyone know?
  2. HardBall macrumors regular

    Jan 10, 2006
    The thermal dissipation works in the same way as tablets in general; any thermal energy produced by internals would be conducted and radiated onto the outer casing, which then distribute the heat on whatever that's in contact with (air, any surface, your body, etc).
  3. Wackery thread starter macrumors 6502a

    Feb 1, 2015
    neat, that's what I really want, I can't wait to see it in person, also edited my original post for the word salad, lol
  4. iRun26.2 macrumors 68000

    Aug 15, 2010
    I would bet that the rMB's aluminum casing would better at dissipating heat than an iPad. Additionally heat will have more surface area to dissipate from because of the open keyboard and screen.
  5. maflynn Moderator


    Staff Member

    May 3, 2009
    My only concern is that we see so many complaints in the MBP forum about MBPs running hot with a fan, now that these bad boys are fanless what will be the running temps for them?
  6. iRun26.2 macrumors 68000

    Aug 15, 2010
    Let just hope the Apple engineers have figured out how to avoid it. My thought is that the Core M processor will shut itself off before things get that hot. I don't think it will ever get hotter than people's iPads.
  7. Queen6 macrumors 604


    Dec 11, 2008
    Land of the Unexpected
    CPU will throttle as it reaches Tjunction, and that`s a genuine concern. What`s going to save the day is the way the Core M races up to max required Turbo Boost" and back to idle far faster than other CPU`s.

    "Tjunction Max is the maximum temperature the cores can reach before thermal throttling is activated. Thermal throttling happens when the processor exceeds the maximum temperature. The processor shuts itself off in order to prevent permanent damage."

  8. JoeG4 macrumors 68030


    Jan 11, 2002
    Bay Area, Ca.
    It probably will get as hot as an iphone/ipad at its worst.
  9. iRun26.2 macrumors 68000

    Aug 15, 2010
    My thinking exactly.
  10. Lucifer666 macrumors 6502a

    Sep 20, 2014
    Probably like an iPad.

    Bet it gets hot.

    I'll bet this is a major complaint. It will probably get to hot for your lap. People will complain almost immediately.

    Of course it will depend on how you use it.
  11. squirrrl macrumors 6502a


    Sep 11, 2013
    San Diego, CA
    naked in bed watching porn... I'll sue Apple for burning my testicles.
  12. iRun26.2 macrumors 68000

    Aug 15, 2010
    Because it must rely on passive cooling I don't think it could be allowed to get hotter than an iPad. I agree some people will still complain but I don't think it will get to hot to sit on your lap. I'm hoping the Apple engineers did a good job of getting the heat distributed over the aluminum chassis. It's only 5W after all!
  13. maclook macrumors 65816

    Nov 2, 2008
    From the Macbook design page on
    "The new MacBook is the first Mac notebook ever without a fan. Since the Intel Core M chip draws only 5 watts of power and therefore generates less heat, no fan or heat pipe is required. Instead, the logic board is seated on top of an anisotropic graphite sheet, which helps disperse any heat that is generated out to the sides, all while your Mac stays virtually silent."

    You can see the anisotropic graphite sheet in that image. I haven't seen much written up about this. Seems like it's been overlooked for the most part.
  14. Samuelsan2001 macrumors 604

    Oct 24, 2013
    Now that is ...

    .... a clever use for graphene nic effort from apple there.
  15. Traverse macrumors 604


    Mar 11, 2013
    iPad 3 could be your frying pan.
  16. NewbieCanada macrumors 68030

    Oct 9, 2007
    If the MacBook is burning your testicles it's not positioned for optimal viewing as there'll be something blocking the screen.
  17. JuryDuty macrumors 6502


    Sep 22, 2014
    That's pretty cool. Eventually, this will be the standard for all laptops, I'm sure. Glad to see it get a start with this model.
  18. No-Me macrumors 6502a

    Jul 3, 2011
    That's what I hope. I'm thinking about replacing my MacBook Air with the MacBook, but I think I'm going to wait for the reviews before I decide if I'm going for the 1.2 or 1.3, I can imagine that the 1.2 is the better choice heat wise.
  19. macrumors 6502

    Jan 10, 2008
    The Netherlands
    It is not graphene since that is only a monolayer of graphite and therefore heat conduction is only minimal.

  20. Mrbobb macrumors 601

    Aug 27, 2012
  21. Hieveryone macrumors 68040

    Apr 11, 2014
    My guess is same as iPad
  22. noobinator macrumors 603


    Jun 19, 2009
    Pasadena, CA
    I have a cheapie laptop (Asus x205TA) that has no fan but it has an atom chip. It gets warm but not too hot. If I leave it on my bed on a blanket and watch netflix for a few hours it gets about as hot as my iphone/ipad would get under similar conditions.

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