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New iMac disassembled

wild_berry writes "Found, via Ars Technica's Apple journal, Infinite Loop, a Japanese site disassembling Intel Core Duo iMac. Clint, from the Ars blog, points out that the Core Duo processor is socket-mounted, allowing for possible upgrades, unlike the IBM chips which were soldered to the PCB's. Please use the - cached pages."

56 of 277 comments (clear)

  1. Noise? by antifoidulus · · Score: 4, Interesting

    From the blog: "There are no less than 3 blowers inside the machine" I wonder if the machine is quiet(can anyone comment from firsthand experience?) Some of the Rev. A iMac G5s sounded like a jet taking off, but it appears they fixed it in later revs. I want to get one of these bad boys, but only if they are silent.

    1. Re:Noise? by baryon351 · · Score: 5, Informative

      People seem to have the impression that these Intel machines have been designed haphazardly, and the lack of aesthetics inside have made for many comments online that the insides must have been designed by Intel themselves to look so different to the G5s. A friend of mine has put together a picture of various models to show that they are almost identical inside to the previous model G5 iMacs. It's those G5 iMacs with iSights that introduced the messier interior, not the Intel ones.

      Just so people know.

    2. Re:Noise? by hey! · · Score: 5, Insightful

      I dunno whether more fans translate to more noise, it might be in fact the opposite.

      I'd rather have several strategically placed fans, running at low RPM and generating very little turbulence, than having single fan sized to move enough air that everything that needs it gets enough airflow, even it a tangle of ribbon cables stand in the way.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    3. Re:Noise? by tigersha · · Score: 4, Informative

      Bingo. You just nailed the thermal management system of the Powermac right on the head. The thing has 10 (ten) fans but is quiet as heck because the machine is split up in thermal zones and each fan only runs when necessary.

      Instead of the PC horror of one fan that has to suck out a large volume the whole time and runs at full blast no matter what.

      --
      The dangers of excessive individualism are nothing compared to the oppressiveness of excessive collectivism
    4. Re:Noise? by Anonymous Coward · · Score: 5, Funny

      I dunno whether more fans translate to more noise

      In my experience, apple fans are very noisy, especially on slashdot.

    5. Re:Noise? by daveschroeder · · Score: 4, Informative

      First, the few G5 iMacs that sounded like a "jet taking off" were iMacs with specific, acknowledged motherboard problems that resulted in their fans ramping up to full speed. This was fixed on-demand in any iMac with that issue, and it was indeed addressed completely in later revisions. This issue never affected more than a small percentage of machines.

      Further, Apple's design is to use *more* fans such that they don't need to be running at full speed (you did know that those are all variable speed blowers, right?). For example, the G5 towers that use 9 fans. None of them are running at too high a speed, keeping the entire machine quiet. Aside from a few models of machines with more audible airflow, Apple's goal is to have machines that run very quietly and are audibly unobtrusive.

      I don't think you'll be disappointed.

    6. Re:Noise? by NutscrapeSucks · · Score: 3, Informative

      The big difference is that the original G5 iMacs were designed to be user-serviceable. The iSight models (G5 or Intel) are not -- nobody's supposed to be looking in there except Apple techs.

      (Now why you aren't supposed to be able to upgrade RAM or disk in 2006 is another question.)

      --
      Whenever I hear the word 'Innovation', I reach for my pistol.
    7. Re:Noise? by EntropyEngine · · Score: 2, Interesting

      You have to admit that it's easy to see why people think that lots of fans means more noise.

      About the only time I hear anything from my dual G5 is when an application falls over and tries taking all of the CPU time with it.

      I get a brief whoosh of sound and then the errant application is killed...

    8. Re:Noise? by John+Whitley · · Score: 2, Interesting

      Looks as if they are cutting costs. The early versions look much more refined and "professional".

      The interior design and layout of a computer mainboard is not driven by superficial aesthetics, but by a host of pragmatic issues. These issues include airflow and heat dissipation management, crosstalk issues between various components and/or traces on the board (ever had a laptop where you could hear the hard drive in the audio out?), placement of offboard connectors, access for upgrades, and so forth. Hardware manufacturers shouldn't be wasting time trying to lump the requirement of "pretty, pretty" on a concealed part! Some board designs do turn out to have a certain visual appeal, but I certainly wouldn't want that at the cost of any of the practical concerns, or at an increased system cost.

    9. Re:Noise? by baryon351 · · Score: 2, Informative

      RAM is still upgradable. Look down the bottom of the 4 rightmost images, and you can see latches/pull catches that unfold so the RAM slots are accessible from the outside, through a small hole in the case.

      Doesn't explain the non-user upgradeable disk - though non-user upgradeable only means "officially".

    10. Re:Noise? by aonaran · · Score: 2, Informative

      Generally Apple machines, like Dell machines have more and bigger fans than necessary so they can turn them more sowly and produce LESS noise than a standard PC.

    11. Re:Noise? by MojoStan · · Score: 2, Informative
      Instead of the PC horror of one fan that has to suck out a large volume the whole time and runs at full blast no matter what.

      As others have pointed out, this is incorrect and sounds suspiciously like FUD. Intel chipsets have had temperature-controlled fans since at least the 845 chipset, which was released in 2001. From that link to Intel's site:

      With Intel® Precision Cooling Technology, your system fans will automatically adjust their speeds according to the internal chassis temperature. If your system temperature is within normal operating specifications, your fans will operate at reduced speeds, thereby reducing noise and power consumption.
      ...
      • Fan speeds adjust real time according to system temperatures
      • Reduces unnecessary noise & energy consumption
      • OS-independent - not affected by a software failure or virus
      • Separate thermal zones for CPU & system temperature
      --
      TO START
      PRESS ANY KEY

      Where's the 'ANY' key? I see Esk, Kitarl, and Pig-Up...

  2. Arts and Crafts time by TripMaster+Monkey · · Score: 2, Informative


    Clint, from the Ars blog, points out that the Core Duo processor is socket-mounted, allowing for possible upgrades, unlike the IBM chips which were soldered to the PCB's.

    I's possible to upgrade a soldered chip...just takes a soldering iron, a little skill, and a lot of paitence.

    (A commercial-grade desoldering tool is also useful.)

    --
    ____

    ~ |rip/\/\aster /\/\onkey

    1. Re:Arts and Crafts time by dc29A · · Score: 3, Interesting

      I's possible to upgrade a soldered chip...just takes a soldering iron, a little skill, and a lot of paitence.

      (A commercial-grade desoldering tool is also useful.)


      I haven't upgraded a CPU for like ... ever. IMO ugprading is not worth it. Usually when I upgrade it's more than CPU only, I need new type of RAM, new stuff like USB 2.0. And at the end, new mobo + CPU = better choice than simply a bit faster CPU that would run in the old machine.

      My good ole' 486 wasn't worth upgrading with Pentium Overdrive, my Athlon Thoroughbreed neither with a faster CPU, and so is my current Athlon 64 3000+ (939). I could upgrade my 939 3000+ with a dual core, but then again I don't need it now and when I would need it, probably early next year I would be better off with a AM2 socket (or whatever it's called) to get DDR2.

    2. Re:Arts and Crafts time by ciroknight · · Score: 2, Insightful

      To the original point of the article: You're staring down the barrel of a revolver half loaded, half not when it comes to upgrading CPUs these days. Sockets are flying by so quickly that you might only see two different cores and only 3-6 speed grades for each core (Banias->Dothon->new socket).

      To me, computers are so damned fast now if you actually *need* to upgrade, you probably need to just get a new computer. Everything about these new Macs breathes cutting edge, from the new PC slot on the MacBook to both being entirely SATA (the only thing that ISN'T cutting edge is Firewire, and there's probably a very sound reasoning behind that such as chip availability (any current Intel ICHs with FW800?)), and so a lot of shifting and settling still has to occur. In that time, some of the standards today might meet the axe, and you're going to be SOL when trying to upgrade anyways. Just buy a quality computer and replace it every 3-5 years as nessicary (yes, if you're nerdy, go with every 18 months).

      --
      "Victory means exit strategy, and it's important for the President to explain to us what the exit strategy is." G.W.Bush
    3. Re:Arts and Crafts time by vidarlo · · Score: 2, Informative

      AFAIK, 386 chips seldomly where BPGA. They had lines connecting along the lines of the chip, which is a big difference. A modern P4 has 776 pins, in 4x4cm, or 16cm^2. Thats far more dense than a 386 either was. And how was you gonna heat the points (which is under a neat layer of delicate electronics)? Especially when resoldering the new one? Infrared oven?

    4. Re:Arts and Crafts time by tzanger · · Score: 2, Informative

      I's possible to upgrade a soldered chip...just takes a soldering iron, a little skill, and a lot of paitence.

      As someone who does this as part of his job -- you're full of shit. I would love to see you desolder a 900-and-some-odd pin chip (or are these uBGA?) without causing damage to the board, even with professional equipment. It's simply not worth the time or energy. If this thing is an actual pinned chip it's even more difficult than with a uBGA. And let's not forget the x-ray equipment required to verify that your soldering was done properly.

      Not to mention that once you've got the chip off, you now have to solder another one on. High-density SMT rework is possible, but it's prohibitively expensive and done only out of necessity.

    5. Re:Arts and Crafts time by tzanger · · Score: 2

      The 80386 was never a BPGA footprint. It was a regular 0.100" PGA, which no, is not impossible but still unbelievably difficult on a multilayer board where you have heavy copper pour for the ground and power planes.

      Fast-forward to today, where the pin spacing has shrunk to sub-millimeter pitch and the number of pins has jumped by a factor of 7x. I have personally desoldered 0.5mm pitch TQFP devices and hand-soldered the same and it's not difficult with "prosumer" equipment (Weller iron with a superfine tip) but BGA/uBGA and the pinned versions are no, not realistically desolderable/resolderable.

    6. Re:Arts and Crafts time by dohcvtec · · Score: 3, Funny

      "I's possible to upgrade a soldered chip...just takes a soldering iron, a little skill, and a lot of paitence." - TripMaster Monkey

      "Everywhere is walking distance if you have the time." - Stephen Wright

      --
      -- Never hit a man with glasses. Hit him with a baseball bat.
  3. No Disassemble by troc · · Score: 4, Funny

    No Disassemble iMac (5)

    or something

    T.

    --
    Troc's dubious podcast and blog: http://www.trocnet.net
    1. Re:No Disassemble by antifoidulus · · Score: 4, Funny

      G5 alive!




      Nope, sorry, dead.

  4. Nerd porn! by Psykechan · · Score: 4, Funny

    Hooray! We have now entered the nerd porn phase of the Apple Product Cycle.

    Sigh... if only the cached site wasn't so slow.

  5. socketed chips by gEvil+(beta) · · Score: 5, Informative

    Something to remember about the last few batches of socketed processors in Macs (G3s and G4s): the FSB, voltages, and processor frequency settings were controlled via a series of unlabeled jumpers on the motherboard, which had a prefabbed jumper block taped onto them (warranty void if removed blah blah blah). I'm sure if they're using a similar mechanism that it will only be a matter of time before someone figures out the jumper scheme and posts them. Then again, maybe EFI handles all of this now. Anybody familiar enough with EFI to know?

    --
    This guy's the limit!
    1. Re:socketed chips by diegocgteleline.es · · Score: 2, Interesting

      Speaking of EFI, linux supports it. I've heard lot of noise about windows support, but what about linux support, will linux (and BSDs) be able to run on those things? I'm not buying a machine that can't run open operative systems...

  6. Coral Cache of the actual article by m0RpHeus · · Score: 3, Informative
    --
    Take-off every .sig! For Great Justice!
    1. Re:Coral Cache of the actual article by rjung2k · · Score: 4, Funny

      Maybe that's an oh-so-subtle hint that looking at the inside of an iMac is not what you're supposed to be doing at work?

      But what if I'm an engineer at Dell?

    2. Re:Coral Cache of the actual article by technos · · Score: 4, Funny

      But what if I'm an engineer at Dell?

      Then the question becomes

      "What the hell are you still doing at work? It's like midnight in New Delhi!"

      --
      .sig: Now legally binding!
  7. Re:but, where is the socket? by pimpimpim · · Score: 2, Informative
    --
    molmod.com - computing tips from a molecular modeling
  8. Easy disassembly = cool by standards · · Score: 4, Insightful

    In a way, the new iMac is like a laptop - you can pull it apart and replace components, but it isn't as if it was designed for home user disassembly (like an ATX beige box.)

    On the flip side, there are Mac designs like the eMac, which require significant disassembly to upgrade the drives. And to upgrade the CPU, your only real choice is to overclock with your soldering iron. And you have to deal with the high voltage CRT.

    I always liked internal Mac design, but older Macs, although somewhat elegant on the inside, were very difficult to upgrade. Sometimes you open up an old Mac and you go "woah, it is shocking that they made it so fancy on the inside of this computer". No wonder they sold the translucent iMacs. But that pretty inside was designed for ease of factory assembly, not for ease of upgrades.

    1. Re:Easy disassembly = cool by Neoprofin · · Score: 2, Informative

      The easiest way to deal with the high voltage CRT is to just leave it unplugged for a couple of days. I work with litterally hundreds of CRTs a day and two days is more than enough time for any dangerous shock potential to dissipate fromt he capacitors.

      That is assuming of course you can go without the system for two days. You could always do it in less and just be careful.

  9. May I please have more cooling rather than less? by ianscot · · Score: 2, Interesting
    The G5 iMacs have also supposedly suffered from a rash of "bulging capacitor" and heat-related problems. The anecdotal stuff I've heard runs from thinking it's simple heat management to talk about power surges and so on... Kind of disturbing.

    If we have to choose between quiet and cool -- and I'd rather not, but this design has a history -- I'll lean toward the machine that doesn't croak six months after I buy it. Better still, waiting six or nine months on this model in its new incarnation seems wise.

    (Or the MacBook instead, but no guarantees there either...)

    --
    "Fundamentalism" isn't about divine morality. It's about human authority.
  10. Re:Yeech by nko321 · · Score: 3, Funny

    No way. Do you think they're really going to use "We Just Don't Give A Shit Anymore" for all their future branding?

    I mean, it speaks to *me*, but I doubt it speaks to, say, my mom.

  11. Re:Pics are nice, but what about battery life? by avalys · · Score: 2, Interesting

    According to one of the Mac rumors sites, the battery life hasn't changed much on the MacBooks, but they don't have official figures yet.

    --
    This space intentionally left blank.
  12. Diagnostic Lights? by NardofDoom · · Score: 3, Interesting

    The original iMac G5 had a series of diagnostic lights inside that showed possible problems. Does this one have that?

    --
    You have two hands and one brain, so always code twice as much as you think!
  13. Inner beauty by Winterblink · · Score: 2, Interesting

    Anyone got a side-by-side comparison between this and the G5 iMac innards? This new one's definitely lacking in the interior design department. I mean I know it's basically a PC now, but...

    Anyway, maybe it's a nitpicky point, but just something that occurred to me when I saw the pictures.

    --
    "I'm a leaf on the wind. Watch how I soar."
    -Hoban Washburn
  14. Say what? by Anonymous Coward · · Score: 3, Informative

    I study Operating Systems at a top CS school here in the United States - Rockhurst College in Kansas City. I don't understand why people go so ga-ga over OSX - it isn't even a pre-emptive multitasking OS, people!

    I guess the top schools aren't taking very many bright students these days, sigh. OSX is absolutely a preemtive multitasking OS. It's built atop the Mach kernel which is preemptive.

    Perhaps you're thinking of MacOS 9 and below which were cooperative. Either way, get your facts straight, esp if you're gonna start your post all puffy chested.

  15. Ars, are you looking? by numbski · · Score: 4, Interesting

    If you are, could you check something for me?

    Will these things come up in target disk mode? Can you boot from a firewire device?

    People seem to mod me down for this, but it is critically important to me to know whether or not I can still do ye olde CCC, keep a dmg around, and restore as needed. :\

    --

    Karma: Chameleon (mostly due to the fact that you come and go).

  16. Intel Motherboard by texspeed · · Score: 2, Informative

    If, as has been reported, the new Intel-based Macs are based on an Intel motherboard, it is not too surprising that the processor would be placed in a socket. However, the initial post is at least partly incorrect in that many prior Macintosh systems had socketed processors, hence the existence of an upgrade market, maybe just not the recent iMacs.

  17. Re:Which Intel CPU is it, exactly? by Venlaw · · Score: 2, Informative

    http://www.apple.com/imac/intelcoreduo.html It's a Core Duo "Yonah". Prety sure.

  18. Re:There's also the "form" factor by modmans2ndcoming · · Score: 2, Interesting

    as a developer, I find OS X to be very much worth the "apple tax"... but then again, if I bought a PC (I am over the putting machines together phase of my life, I have more important things to do) I would be purchasing one with the same specs as what ever mac I would buy, so the price is near enough that I am not hurting...and now that Apple has intel inside, the machines should get bumps every quarter or sooner when intel releases new versions of a chip line that Apple uses.

  19. Re:There's also the "form" factor by wootest · · Score: 4, Informative

    As an owner of a PowerBook G4 1.5GHz (which amazingly is not only, predictably, obsolete at a year and three weeks, but was in fact more or less obsolete when it shipped; that the MacBook Pro is reportedly only 4-5x faster in benchmarks is surprising) I'll have to disagree.

    I'm a programmer. OS X has some of the best tools I've ever used, and it gives me access to both tools I used before (most of the unixy goodness like the scripting languages and simple, focused command line tools) and now continue to use, and to some completely awesome new tools (Cocoa). This isn't me being a zealot (I'm presumably much more annoying when I'm a zealot), it's just facts.

    It's true that lots of people who are 'in an artistic field' appreciate Macs too, because it's what they've been using all these years. But I, as a programmer, find that I write apps much easier and that the other tools in my toolbox are plenty and good. I like the industrial design (swap out with 'pwetty boxes' if you seriously think they're the same thing) as much as anyone, but aside from a fleeting fascination with it, it's not why I bought it - I bought it because of an awesome OS and some very good tools. And so far, I have not been let down.

  20. Re:Pics are nice, but what about battery life? by jcupitt65 · · Score: 2, Informative
    Someone (sorry, forgotten who) said they'd played with one at the show and if you moused over the battery thing the popup said "3:03 minutes".

    Of course that could change for the final production models.

  21. iMac battery life by kfg · · Score: 5, Funny

    Can someone with one of these beasts tell us how long the thing runs unplugged?

    Couple of nanoseconds.

    KFG

  22. Re:Which Intel CPU is it, exactly? by thesman · · Score: 2, Informative

    Its the Intel Core Duo, also known as Yonah.

    Its not Apple exclusive.

    Can't tell you about the speed because I don't have one (yet :-)).

  23. I HAVE ONE. SILENT! by Eric_Cartman_South_P · · Score: 5, Informative

    I just got a 20 inch Dual Core iMac yesterday. Screen is a monster. The mac, for everything except games (cal of duty, battlefield, etc) is DEAD QUIET. I can't hear ANYTHING. I love it.

    \ Dual Core 2 ghz iMac is do damn fast it's not funny. Editing home movies while 10 apps run in background is nothing short of a delight. I'll exit fanboy mode now, but if you are thinking of Dual Core, go for it.

  24. Looks a real mutha to clean by ettlz · · Score: 2, Interesting

    That looks like some disassembly is required to clean dust from the heatsink and fan. Even my notebook only needs one panel removed and I can blow it out; I do wish designers would pay more attention to this. Dust settles — even in Macs.

  25. Re:OSX whats the big deal by feijai · · Score: 4, Funny

    Who marked this guy a troll? It was hillarious! I particularly loved the Rockhurst College bit.

  26. Re:Pics are nice, but what about battery life? by freedom_surfer · · Score: 2, Insightful

    Yes...I'm glad I'm not alone. I searched all over the new MacBook site too. The fact I couldn't find anything was also scaring me. If your first responder was correct, 3 hours isn't too bad, but it does make you wonder about the performance per watt business. I've also been curious about the clockspeed. Intel performance at 1.83 ghz is like 3 years old. Have the improvements in memory and bus speed as well as this new architecture really made 1.83 ghz 'fast' again? Makes me think they are just providing lots of legroom for short step ghz improvements over the next few years to help make up for the wall they are hitting with Moore's law...hehe

  27. Supports Apple Boot Features by Anonymous Coward · · Score: 3, Informative

    MacWorld covered many of these questions.

    See http://www.macworld.com/2006/01/features/intelfaq2 006/index.php

    (particularly the bottom of the page "Does this mean that Open Firmware is dead?")

  28. Re:Which Intel CPU is it, exactly? by wild_berry · · Score: 2, Informative

    It uses the new Core Duo processor, which is the product name of the Yonah chip. This is a tweaked Pentium M, puts two their cores on one piece of silicon. They say each core is comparable to an Athlon64 -- but they only have 32-bit x86 capabilities (albeit with the SSE3 instructions).

  29. Faked? by pvera · · Score: 4, Interesting

    I am sorry, but as a long time victim of the iMac G5 series, I have to question these pictures.

    Background:

    I have one personal iMac G5 20", and five work iMac G5 20"s all within the serial number range affected by bad capacitors and bad power supplies. A coworker also has a personal iMac G50 20" within the affected range.

    Out of these seven machines, three have already killed one motherboard and a power supply. Two of these machines have burned at least two motherboards.

    So yeah, I have a damn good idea of what the innards of an iMac G5 20" looks like. Because of this I am having a hard time coming to terms with these pictures. They look shoddy as hell, like they are pictures of a pre-production mule or mockup. Tear open any Apple product from the last 5 years and you will notice the fanatical attention to detail in the way the hardware components are laid out. They are very clean and pretty. The iMac G5 20" is extremely well laid up, everything is tucked in, there are no lose wires, and there is basically no space left unused.

    Either these pics are a PS job, or somebody leaked pictures from older test mules. There is no way in hell that Apple is going to sell something that looks so messy.

    --
    Pedro
    ----
    The Insomniac Coder
    1. Re:Faked? by wvitXpert · · Score: 2, Informative

      Nope, not fake. This is the way iMacs have looked since they added the iSight. I'm disapointed (mainly because it is supposedly VERY difficult to open the machine up), but that didn't stop me from ordering one anyway.

  30. Intel chipsets used by daveschroeder · · Score: 5, Interesting

    It's interesting to note that the new iMacs are using a standard Intel 945 Series chipset, and an Intel 82801GBM southbridge, as well as other standard Intel chipsets and features:

    Other interesting hardware features can be discovered by browsing the output of system_profiler, kextstat, and ioreg .

    Of note:

    - Full 802.11a support is present, though unadvertised, as well as 802.11b/g
    - Intel High Definition Audio is used
    - the iMac's optical drive does have dual layer support, unlike the ultra slimline 9mm drive used in the MacBook Pro
    - the iSight is USB
    - a TPM entry is present in ioreg
    - com.apple.Dont_Steal_Mac_OS_X is an active kernel extension

  31. Re:OSX whats the big deal by Anonymous Coward · · Score: 3, Funny

    I study Operating Systems at a top CS school here in the United States - Rockhurst College in Kansas City. I don't understand why people go so ga-ga over OSX - it isn't even a pre-emptive multitasking OS, people!

    No, OS X, built on the Mach kernal, does have pre-emptive multi-tasking. Think of it as an evolutionary improvement over past versions of...

    Oops! Sorry Kansas.

  32. Trusted Platform Module by hfollmann · · Score: 4, Informative

    On one of the pictures you can see a Infinion-TPM module. Is that activated on the Mac?

    --
    hfoo
  33. Re:I HAVE ONE. SILENT! by Eric_Cartman_South_P · · Score: 3, Informative

    I never see the "beachball" mouse curser (the Windows equiv. is the hourglass mouse cursor, indicates OS is busy). I can have iDVD, iMovie, Call of Duty, iTunes playing, 10 Tabs open in Safari, FTP serving files to active connection, and no beach ball in Windows, game still plays nice, and iTunes "skipped" once in three hours of all this crap running while playing Call of duty.

    And to the anti-fanboy like-dells-balls people out there, the above is simply a subjective review of my experience. Simple real world usage. And remember, it takes almost NO desk space and I plugged in electric, mouse and keyboard usb, and was using this thing, including registration, in 4 minutes. Have fun loading spybot/adaware/ms antispyware/clam av/avg/zonealarm just before you can even use your box. ha. the only windows I have in my life is now Virtual PC, and as I find good mac replacesments, eventually that app will go the way of the DoDo bird.