Insides of 2012 iMac (pic)

Discussion in 'iMac' started by DennisD7, Oct 24, 2012.

  1. DennisD7, Oct 24, 2012
    Last edited: Oct 24, 2012

    DennisD7 macrumors member

    Joined:
    Jul 17, 2012
    Location:
    London, UK
    #1
    [​IMG]

    I captured this from the keynote posted on Apple.com - sorry if this is a double post, I haven't checked all new posts here :)

    Thoughts:
    1. Only one fan is visible, I hope this doesn't affect noise levels too much.
    2. Only one exhaust, under the foot on the back. It also seems all air is pulled in through the grille on the underside - and those holes are less than 5 mm wide.

    I'm not that worried though, I'm sure they know what they are doing. That metal backside also helps a lot with heat dissipation, which in turn helps keeping the fan(s) at low speeds. I tried maxing the CPU on my work iMac for a few hours and while temperatures went up significantly, the fans stayed surprisingly calm.

    /D7
     
  2. lucasfunkt macrumors 6502

    Joined:
    Jun 11, 2012
  3. DennisD7 thread starter macrumors member

    Joined:
    Jul 17, 2012
    Location:
    London, UK
    #3
    There, fixed!
     
  4. 12dylan34 macrumors 6502a

    Joined:
    Sep 3, 2009
    #4
    It looks a lot simpler than the old models. Hopefully easier to get to stuff.

    [​IMG]
     
  5. Johnf1285 macrumors 6502a

    Johnf1285

    Joined:
    Dec 25, 2010
    Location:
    New Jersey
    #5
    How awesome would it be if the screen was held in by magnets and only had like 2 or 3 cables going to it. Once it pops off, everything is easily accessible!
     
  6. easy4lif macrumors regular

    easy4lif

    Joined:
    Mar 31, 2005
    Location:
    Southbay CA
    #6
    sorry to burst your bubble but the image on top is of the iMac if its facing AWAY from you. I'm gonna assume that you'll have to tear it down a bit to access the memory slots.

    hopefully ifixit will come up with a workaround
     
  7. hfg macrumors 68040

    hfg

    Joined:
    Dec 1, 2006
    Location:
    Cedar Rapids, IA. USA
    #7
    That appears to be the 27" due to the 4 RAM slots.

    That also appears to have a standard 3.5" desktop disk drive, not the laptop drives some rumors are touting.
     
  8. zoffdino macrumors member

    Joined:
    Apr 27, 2009
    #8
    The reversed Apple logo was a dead give-away that this is viewed from the back of the machine. I hope they make the back removable, like the first generation iMac G5.

    The picture also suggests that the RAM on the iMac can be installed by the user, just not as easily as popping a back door on the 27".

    And for those who cry about no SSD standard, the 21" and 27" has two mounting points so you can drop SSDs onto both. The simpler layout gives me hope that it's more user-doable than before.
     
  9. Stetrain macrumors 68040

    Joined:
    Feb 6, 2009
    #9
    Cooling system looks very simple.

    1) Cool air flows in from the bottom vents, which from the pictures look like they will let a lot of air in.

    2) Heat pipes bring heat from the GPU, CPU, and Hard drive to one central heatsink that spans across the back vent.

    3) One fan pulls ambient air from the case and forces it across that heatsink and immediately out of the computer.

    It looks like the same general design that they're using in the new Retina Macbook Pros, hopefully it gets the job done.
     
  10. drambuie macrumors 6502a

    Joined:
    Feb 16, 2010
    #10
    It looks like the back comes off, and the flat chassis is behind the display. This would eliminate the heat related dark patches on the LCD that the previous iMacs were prone to. To get at the guts you would still need to remove the display first, then detach the rear shell. The flat cable going to the top is obviously the display channel.
     
  11. karpich1 macrumors regular

    Joined:
    Dec 18, 2007
    #11
    Somewhat related question...

    Is the back panel/bowl still aluminum?

    A friend said it was plastic, which I said can't be true because they've always used the al backs as heatsinks.

    Is it still metal?
     
  12. drambuie macrumors 6502a

    Joined:
    Feb 16, 2010
    #12
    There is a small cover that comes off for memory access on the back between the vent holes and line cord socket.

    From the Apple site:
    Configure and buy your iMac at the Apple Online Store and it will arrive with the memory already installed. Or add more memory to the 27-inch model yourself by popping open the easy-to-access memory panel on the back.
     
  13. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #13
    I don't see the heat pipe from the HD. With the PSU under the HD, will there be sufficient cooling to keep it alive in the long-term?
     
  14. MattSepeta macrumors 65816

    MattSepeta

    Joined:
    Jul 9, 2009
    Location:
    375th St. Y
    #14
    It will be interesting to see how we can upgrade the internal storage.
     
  15. Stetrain macrumors 68040

    Joined:
    Feb 6, 2009
    #15
    Yep, you're right. What I thought was a heat pipe is actually the Power/SATA cable for the HD.

    ----------

    Yes, it's still aluminum.

    ----------

    Look at the pictures on Apple's site and from tech news sites I don't see any way for the back to come off. Like previous models the way in is most likely to remove the glass/display assembly from the front.
     
  16. Dadioh macrumors 65816

    Dadioh

    Joined:
    Feb 3, 2010
    Location:
    Canada Eh?
    #16
    Cooling?

    A few thoughts, conjectures, and questions on cooling....
     

    Attached Files:

  17. Johnf1285 macrumors 6502a

    Johnf1285

    Joined:
    Dec 25, 2010
    Location:
    New Jersey
    #17
    I understand the perspective of the image. I can discern that it's as if we are looking at the machine from the rear.

    The fact of the matter is, the rear won't be opening on these things.

    Think about it. Look at the unit. The only way IN is from removing the screen. Same story for all the aluminum iMac's - been inside of a 2007 and a 2010 before, I am pretty familiar with these machines.

    Also, they went on for like 5 minutes about how the front aluminum portion is specially welded to the rear portion now. How the hell does it open from the rear then if the front "chin" is welded to the rest of the rear shell?

    ----------

    The black heatsink and heat pipe on the left is the GPU. The heatsink in the center is the CPU.
     
  18. Dadioh macrumors 65816

    Dadioh

    Joined:
    Feb 3, 2010
    Location:
    Canada Eh?
    #18
    So that's 2 devices, CPU and GPU, under the heatsink base?
     
  19. ZMacintosh macrumors 65816

    ZMacintosh

    Joined:
    Nov 13, 2008
    #19
    well thats essentially how the pre-2012 models were.

    From what I gather, the front panel is just the top-case/keyboard of the unibody MacBook Pros. and the back is one piece.

    you suction cup off the front panel from the rear stand and the parts sitting on the rear of the display housing/panel.

    so ultimately if you have an issue or a bad LCD/Display they swap off all the components and put thoses on a new unibody display panel and pop it back on the rear stand housing.
     
  20. dwarnecke11 macrumors 6502

    Joined:
    Nov 29, 2009
    #20
    I like how the new speakers fill up much of the extra space in there. They look like lungs!
     
  21. applefiend95 macrumors regular

    Joined:
    Jan 25, 2012
    #21
    the two huge thing either side are speakers? if so, why there so much empty space still?
     
  22. Stetrain macrumors 68040

    Joined:
    Feb 6, 2009
    #22
    Here's the labeled slide from the keynote (pulled from 720p version, I'm downloading the 1080p version now to try to get a better shot):

    [​IMG]

    The heatsink off to the left is the GPU. The CPU is buried right in the center under the heatsinks. I guess that's what the U shaped heatpipe is for.

    As I look at this design I'm starting to think that everything is actually bolted to the display assembly. If that's the case then when you pull out the display via suction cups you'll actually be pulling out the whole computer, leaving just the aluminum shell. It definitely makes sense to put the logic board right up against the display, because that leaves the maximum amount of room behind it for all the heatsinks (which is what the bulge is for).
     
  23. Dadioh macrumors 65816

    Dadioh

    Joined:
    Feb 3, 2010
    Location:
    Canada Eh?
    #23
    Aaaaahhhh. I get it. The logic board extends under the exhaust shroud. Shoulda seen that :eek:

    So GPU is integrated onto the logic board rather than an installed card. No more graphics card swap if the original one dies. Whole logic board replacement required.
     
  24. Stetrain macrumors 68040

    Joined:
    Feb 6, 2009
    #24
    Yep, looks like it.

    Honestly the general construction here looks like the 15" Retina MBP on steroids, which makes a lot of sense.
     
  25. hfg macrumors 68040

    hfg

    Joined:
    Dec 1, 2006
    Location:
    Cedar Rapids, IA. USA
    #25
    Looks like the SSD is a "blade" type as in the Air and MBPr.

    Does that mean that "fusion" is a totally separate SSD and HD?
     

Share This Page