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해당 분해도는 수리 안내서가 아닙니다. iMac Intel 21.5" Retina 4K Display (2017) 수리는 저희 서비스 설명서를 사용하십시오.

  1. iMac Intel 21.5" Retina 4K Display 2017 Teardown, iMac Intel 21.5" Retina 4K Display 2017 Teardown: 1 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown, iMac Intel 21.5" Retina 4K Display 2017 Teardown: 1 단계, 이미지 2/2
    • Well this exterior certainly isn't giving much away, but you can't always judge a book by the aluminum-and-glass shell of the iMac that you're reading it on. Let's start with what we know:

    • 3.0 GHz quad-core Intel Core i5 (Turbo Boost up to 3.5 GHz)

    • 8 GB of 2400 MHz DDR4 memory

    • Radeon Pro 555 GPU with 2 GB of VRAM

    • 1 TB (5400-rpm) hard drive

    • 802.11ac Wi-Fi and Bluetooth 4.2

    • 43% brighter display (500 nits) with 4096 × 2304 resolution and P3 wide color gamut

  2. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 2 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 2 단계, 이미지 2/2
    • A peek at the back reveals a bevy of ports. First, the usual suspects: a headphone jack, SD card reader, four USB ports, and an ethernet jack.

    • The un-usual suspects? This iMac's sporting two Thunderbolt 3 ports. These support double the bandwidth of the previous generation—each of these ports can push data at 40 Gbps.

    • That's enough throughput to drive four 4K external monitors—although with this hardware configuration, Apple says we're limited to two.

    • How are we supposed to get by with a total of just three 4K displays? How?

    • Confirming our suspicion that this is mostly a 2015 iMac with a facelift, this unit sports the same model number (A1418), but with a new EMC: 3069.

    • We grab our pizza cutter iMac Opening Wheel and go to town. Then, we bring it back home and use it to split open our fancy new iMac.

    • 'Round and 'round we go, and the adhesive securing the display perimeter goes kaput.

    • When Apple introduced this form factor in 2012, replacing the much-loved magnets, we were sad and confused. Since then we've learned its secrets, and now we're on board with how easy this adhesive is to slice through.

    • We'd love to see Apple implement something like this in their other product lines.

    • After a familiar opening procedure, we get our first peek inside.

  3. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 4 단계, 이미지 1/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 4 단계, 이미지 2/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 4 단계, 이미지 3/3
    • With all the glass and pixels out of the way, we immediately pick out some subtle updates.

    • First, the logic board has grown—encroaching on territory formerly held down by the right speaker, and even expanding towards the fan a bit.

    • Even more notable, there's a conspicuous heat sink mounting plate sprawled out in the middle of the board. Funny, the old heat sink didn't need one of those...

    • Lastly, near the center of the bottom display bezel, just beneath the glass, there's a microphone! Whose ribbon cable routes right over the top of a screw, which is pretty weird.

    Looks like the hard drive has a special bracket, would that likely be included if you BTO a model with SSD only?

    JM Palacios - 답글

    its an usual 2,5” size, you can use any SSD device, phisicaly should fit

    Angel Sanchez -

    What upgrade to the cpu can be made?

    Tha-Don - 답글

  4. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 5 단계, 이미지 1/1
    • Well, this part of the refresh is less refreshing than we'd like—the right speaker is no longer immediately removable. It's trapped pretty solidly by the new logic board contours.

    • No big deal; it just means your favorite set of iMac repair guides won't fully apply to this model. We'll get to work on that for you.

    Are you guys still working on this?

    Tim Rauls - 답글

    Tim - It is complete, this is not a repair manual to fix something. It’s a view inside and what makes this iMac tick!

    Dan -

    @timspc The revised guides for this model are complete. (There’s no guide for right speaker specifically, but it’s easy to remove once the logic board assembly is out.)

    Jeff Suovanen -

    @Jeff Suovanen Thanks!

    Tim Rauls - 답글

  5. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 6 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 6 단계, 이미지 2/2
    • The rest of this iMac comes apart pretty much the way we expect, and we dispense with the power supply, hard drive, and fan without fuss.

    • And with a bit more elbow grease, we shimmy the logic board out of its slot to reveal ... removable RAM? We can hardly believe our eyes.

    • Yep, those are SO-DIMMs. Two of them.

    • Slightly less excitingly, there's also an exciting split heat sink. But seriously, look at that RAM!

    What's in the bottom-left corner of the mobo? It looks like a mini-pci card; maybe the wi-fi?

    Chris Clawson - 답글

    It is Broadcom BCM943602CDP.

    JJ Wu - 답글

    The Logic Board (Mainboard / Motherboard) isn’t named. Who’s the Manufacturer and which ModellType ???

    Like for Example: Gigabyte Maximus IX Formula (Intel CPU 1151 Board)

    Roni Schlossi - 답글

    What Type of Logic Board (Mainboard / Motherboard) is used by Apple on the iMac 21,5 and 27 Modells 2017 ?

    Please Name it. Thx.

    Like for example: Gigabyte ASUS MAXIMUS IX FORMULA (Intel used 1151)

    Roni Schlossi - 답글

  6. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 7 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 7 단계, 이미지 2/2
    • It may not be as accessible as the (dead simple) RAM hatch found in the 27" iMacs—but still, this is a major win for upgradability over all the 21.5" iMacs with soldered RAM that we've encountered in recent years.

    • Before moving on, we take a moment to scope out the silicon these memory modules have to offer:

    • SK Hynix H5AN8G6NAFR-UHC 8 Gb DDR4 SDRAM (4 × 8 Gb = 4 GB per DIMM, 8 GB total)

    • Ablic (formerly Seiko Instruments) S-24C04A 4 Kb Serial EEPROM Memory

    Only 8Gb on what can hardly be an entry-level model?

    rjvbertin - 답글

    Are these SODIMMs or normal sized DIMMs?

    Aidan Marrone - 답글

  7. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 8 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 8 단계, 이미지 2/2
    • This new heat sink design has us intrigued. What's hiding under there?

    • Warranty voiding stickers on the heat sink screws? That's odd. Could that mean...

    • Yes! The CPU is modular, too! It lifts right off with the heat sink, revealing a standard LGA 1151 CPU socket.

    • Again, this isn't the most accessible thing in the world—it's flipped onto the backside of the logic board, trapped behind a lot of other components, and buried under a glued-down pane of glass—but for the first time in years it's possible to replace or upgrade the CPU without a reflow station, and that's a big win.

    It should be noted that legally, such warranty void stickers are invalid. The Magnusson-Moss Act quite clearly gives users the right to upgrade, fix, and update their machines as they see fit, without voiding any warranty (unless the user, in the act of upgrading itself, breaks something).

    Mark - 답글

    Does this all mean one CAN purchase and install a more powerful processor? After almost assassinating my own copy of this “upgradeable” machine by bending the clamshell gold tips that connect the BT and WiFi antenna cables to their pins on the communications board I probably shouldn’t be tempted, but curious minds…

    Jim Robertson - 답글

    Up to a point! You are limited to the Kaby Lake series of Intel CPU’s as your systems firmware only offers the needed micro-code for the Kaby Lake CPU’s. Basically, what these system use iMac18,2

    Dan -

  8. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 9 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 9 단계, 이미지 2/2
    • This CPU is quite well thermally-pasted into its heat sink; prying it out was surprisingly tough. Someone wants this processor to keep cool.

    • Finally, we're face-to-face with the star of this teardown: an Intel SR32W Core i5-7400 Kaby Lake CPU, 6M Cache, up to 3.50 GHz.

    • Looking at the rest of the Kaby Lake lineup, we're actually not seeing any desktop-class CPUs in a BGA package. Maybe Apple reverted to a socketed CPU because that's all Intel is offering at the moment.

    • But with Apple's clout and famous negotiating skills, you'd think they could get a soldered CPU if they wanted. Plus there's that mysterious modular RAM...

    • Have you been hearing our pleas, Apple?

    One branch of the heat pipe manifold went to the i5 cpu. What is the second brach cooling?

    Larry Nolan - 답글

    Probably the GPU.

    fabianoarruda -

    Yes, it's the AMD Radeon Pro 555 GPU chip which is soldered. Watch the vid where you'll get a better view of it and the supporting VRAM chips.

    Dan -

    Para Apple era mejor poner el i5-7400 porque es más barato Intel tiene el i5-6585R con sus mejores gráficos

    Leonel Tirado - 답글

    i wonder what sort of CPU upgrades will this mobo support.... maybe an i7-6700?

    dan - 답글

    We dropped an i7-7700 into ours and it works great. :)

    Jeff Suovanen -

    Would they simply have realised, finally, that a 4k$ display is a bit too much to throw away when its computing component has become obsolete?

    rjvbertin - 답글

    I'll bet Apple made it modular to make warranty repairs cheaper

    ethicalpaul - 답글

    Yeah I'm guessing Apple is using modular CPUs to save on components. New iMac line? Same thing -- just swap out the CPU! I guess they came to a point where they were losing a lot of cash in repairs.

    TheAnimaster - 답글

    I think that apple was seeing warranty costs expand for repairs to in warranty devices where the CPU or Ram Failed and the local apple store couldn't fix it and could only give them a "new- refurbished" unit. then the broken one would have to be torn down and sent through the refurb process to sell at a discount. Huge $$ drain on in warranty repairs. So giving a modular design but not easily accessible to commoner allows the local stores to repair these issues. Also apple was seeing a large number of the old "apple" crew that was holding on to their older machines (circa 2010, 2011) and moving up to the current models because it was difficult to justify a machine that you couldn't increase ram when a newer OS version would benefit for the increase ram. Also that apple was getting the jibe of being the new Microsoft/Dell wanna be's (proprietary, not up-gradable, overpriced disposable machines.

    bbbb - 답글

  9. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 10 단계, 이미지 1/1
    • The final bit of interesting modularity on this board: a CMOS battery.

    • With all this new modular hardware, it almost looks like they ran out of space for this guy. It's hilariously placed vertically in this cute little battery toaster slot.

    • Side note: please do not put batteries in the toaster.

    • Or toast in your iMac for that matter...

    Did iFixit suddenly get a legal team? :D

    iEvan - 답글

    Those kinds of slots are very common in server motherboards. They're easier to damage than the flat style but use much less PCB space.

    William Brown - 답글

    I've had (Roxio) Toast in my iMac for years, with no harm done!

    sascha2 - 답글

    Don’t you mean “bread”? The only time I put toast in the toaster is if I decide it isn’t toasted enough the first time lol.

    djlobb01 - 답글

  10. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 11 단계, 이미지 1/1
    • Now that it's stripped of all accoutrements, we can ID this logic board's silicon:

    • Intel LGA 1151 CPU socket

    • AMD Radeon Pro 555 GPU

    • SK hynix H5GC4H24AJR-ROC 4 GB GDDR5 2400 MHz SDRAM (4 GB × 4 for a total of 2 GB VRAM)

    • Broadcom BCM5776 Gigabit Ethernet controller

    • Texas Instruments CD3215C00 (also seen recently in the 15" MacBook Pro) USB type-C controller

    • Intel SR2C9 platform controller hub

    Wouldn't it be (1 Gb × 4 for a total of 4 GB VRAM)???

    Alejandro Ferrari - 답글

    The size of the b/B is important here the small b is bit where as the big B is Byte. 8 bits equal a single Byte

    Here's a full chart:

    1 byte (B) = 8 bits (b)

    1 Kilobyte (K / KB) = 2^10 bytes = 1,024 bytes.

    1 Megabyte (M / MB) = 2^20 bytes = 1,048,576 bytes.

    1 Gigabyte (G / GB) = 2^30 bytes = 1,073,741,824 bytes.

    Dan -

    Any clue on the empty SSD blade pads as to what the interface is? I hope you guys get one of the high end models with the blade SSD

    Dan -

    Hello! What about the chipset? Does this motherboard support 8th generation of the Intel CPUs?

    cgr1095 - 답글

    Where is the bios on these boards?

    joe - 답글

    Texas Instruments CD3215C00 is a power controller. It is mis marked here and the link to the 15” MacBook Pro with TB.

    Dan - 답글

    @danj It looks correctly marked to me…?

    Jeff Suovanen - 답글

  11. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 12 단계, 이미지 1/1
    • Flip the board for more chips? Don't mind if we do:

    • Vimicro VC0359 camera processor

    • Cirrus Logic CS42L83 audio codec

    • MXIC MX25L6473E 64 MB serial flash memory

    • Intersil ISL95828 Intel CPU PWM controller

    • NXP Semiconductor CBTL06142E display port multiplexer (likely)

    • Intersil ISL6277A multiphase PWM regulator

    • Fairchild FDH10CJ MOSFET

    Пропустили Thunderbolt контролёр. Он, судя по всему, расположен рядом с портами Thunderbolt 3.

    Nik Dagoth - 답글

    There is one chip not identified near top left corner(next to the connector). It should be chip for Thunderbolt 3.

    JJ Wu -

    That would make sense! As the PCH does not have it embedded. Intel has stated they are moving to embed the interface within their chips.

    Dan -

    Where is the Wi-Fi+BT controller? Is it integrated somewhere, or you just missed it?

    Alex Rish - 답글

  12. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 13 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 13 단계, 이미지 2/2
    • Chip identification, continued:

    • Texas Instruments LM4FS1EH system management controller

    • Texas Instruments TAS5764L audio amplifier

    • Intel JHL6540 Thunderbolt 3 controller (likely)

    • Dialog Semiconductor (formerly Adesto) AT45DB021E 2 MB serial flash memory

    • Winbond W25Q80DW 8 MB serial NOR flash memory

    • Macronix MX25L1006E 1 MB serial NOR flash memory

    • Texas Instruments TMP423 triple remote/local temperature sensor

  13. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 14 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 14 단계, 이미지 2/2
    • Chip identification, continued:

    • Fairchild FDMF5804 smart power stage

    • International Rectifier IRF3575 60 A synchronous buck controller

    • Texas Instruments LP8565A128 MOSFET driver

    • Renesas (formerly Intersil) ISL62383C notebook power supply controller

    • Texas Instruments REF3330 3.0 V voltage reference

    • Texas Instruments TPS3897 1-channel voltage supervisor

    • Texas Instruments TPS3847108 380 nA voltage monitor

  14. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 15 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 15 단계, 이미지 2/2
    • Chip identification, continued:

    • Texas Instruments INA210/INA213/INA214 current sense amplifier, OPA348 operational amplifier, and TLV3701 high-voltage comparator

    • Texas Instruments TPS51916 memory power supply

    • Texas Instruments TPS54622 6 A synchronous buck converter

    • Texas Instruments TPS62130B 3 A step-down converter

    • Texas Instruments TPS2557/TPS22990/TPS22966 Load Switches

    • Texas Instruments SN74LVC08A and Nexperia (formerly NXP Semiconductor) 74LVC08A 4-channel, 2 input AND gate

    • Nexperia (formerly NXP Semiconductor) 74LVC1G99 3-state configurable function gate

  15. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 16 단계, 이미지 1/1
    • Turning our attention back to the display: the fancy new panel comes courtesy of LG (who also made the fancy old panel).

    • And that famously W-Fi allergic external monitor...

    • This particular ultra-high def beauty is model LM215UH1-SDB1.

    • Now moving to the display chips, read on!

  16. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 17 단계, 이미지 1/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 17 단계, 이미지 2/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 17 단계, 이미지 3/3
    • Take a peek at what powers those popping pixels:

    • Texas Instruments SN74LVC8T245 8-bit dual-supply bus transceiver

    • Texas Instruments BUF16821 programmable gamma-voltage generator and Vcom calibrator

    • Parade Technologies DP665 LCD timing controller (the same found in the last generation iMac 4K)

    • We assume this is an Apple modified version of the DP663

    • Texas Instruments TPS54218 4.5 V to 17 V input, 2 A synchronous step-down SWIFT converter

    • Texas Instruments TPS54320 4.5 V to 17 V input, 3 A synchronous Step-Down SWIFT converter

    • Texas Instruments TPS65168 high resolution, fully programmable LCD bias

  17. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 18 단계, 이미지 1/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 18 단계, 이미지 2/3 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 18 단계, 이미지 3/3
    • Display controller board chip identification, continued:

    • Texas Instruments TMP423 triple remote/local temperature sensor

    • Winbond W25Q40CL 4 MB serial NOR flash memory

    • Texas Instruments TPS3808 current supervisor

    • Ricoh R1154N065B 150 mA LDO regulator

    • Texas Instruments SN74AHC1G08 single 2-input AND gate and SN74LVC1G04 dual inverters

    • Texas Instruments SN74LVC1G98 configurable multiple-function gate

  18. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 19 단계, 이미지 1/2 iMac Intel 21.5" Retina 4K Display 2017 Teardown: 19 단계, 이미지 2/2
    • Previous iMacs featured a dual-mic setup, with two microphones hiding behind the front-facing camera. Two microphones allows the device to filter out ambient noise and produce a cleaner signal.

    • This year, it seems Apple switched to a single microphone—and moved it to the bottom of the display, behind the glass.

    • Perhaps they've improved their signal processing enough to make do with one and save some pennies.

    • We'll wait to hear from the early adopters if the new setup is any better or worse.

    Any clue on the foot stand? During the presentation they implied the foot was now user removable! And a VESA mount was coming back. Can you see if you can remove it please!

    Dan - 답글

    Hey Dan, it looks like the foot is not "user-replaceable." The mounting screws on the foot face into the iMac rather than straight up, so they can't be revealed by pivoting the stand around its hinge.

    Evan Noronha - 답글

    Does anyone know where I can buy a replacement microphone?

    techr - 답글

    Did you ever find one? I need one too. Mine stopped working and we’ve determined it’s not a software issue.

    Chris West -

  19. iMac Intel 21.5" Retina 4K Display 2017 Teardown: 20 단계, 이미지 1/1
    • And that's that!

    I didn't see it addressed but is the stand mounting identical to previous models? I have a custom mounting adapter that works for 2012-15 models.

    hamesken - 답글

    What's the circular thing in the upper-middle of the rear panel?

    Chris Clawson - 답글

    That's where the Apple-logo is located. Looks like it might be backlit.

    Andreas -

    What's the size of the SSD in Fusion Drive-equipped configurations?

    Jorge - 답글

    It’s really disappointing, you missed the Wi-Fi module in the article. I can't even find it in the last picture.

    fadedmaple - 답글

  20. 최종 결론
    • The CPU and RAM—two of the components you are most likely to upgrade at some point—are both modular.
    • The standard 2.5" SATA hard drive is fully upgradable—though you can't add a blade SSD thanks to an empty pad on the logic board.
    • Cutting the tape to open the iMac isn't too hard (with the right tools), but it must then be replaced to complete any repair.
    • Most replaceable components (like the RAM) are buried behind the logic board, meaning you'll have to take apart most of the iMac just to gain access to them.
    • The glass and Retina Display are fused together, increasing the cost of replacement.
    수리 용이성 점수
    수리 용이성 10점 중 3점
    (10은 가장 쉬운 수리를 뜻합니다)


You mentioned a 3.5" SATA HDD in "Final Thoughts", but as per the Picture it seems to be a 2.5" as previous models. Can you please confirm. Thanks

musstafaa - 답글

I fixed it right now!

Federico Barutto -

Apple offer Fusion and SSD as BTO options - so the logic board must be different for that surely as you said there is no SSD slot? Another tear down in a few days/weeks!!?

Dominic Cazenove - 답글

The Fusion-Drive and the SSD only versions might have the necessary connector soldered onto the board. At the photo, you will see the screw hole for mounting a Blade SSD.

Michael Slomma -

And you can see where the connector would be soldered at the bottom left of the board.

Dominic Dunlop -

Get the connector and solder it on :-)

Bernd Rutzmoser -

Just asking everyone, why does an iMac desknop need a CMOS battery? Can't it run on power from the AC socket?

Moana Waialiki -

Moana, CMOS battery is to retain clock and some other settings during power outages. It doesn't assist in powering the system (look at its size)

tipoo -

Do you know what type of Wifi/Bluetooth chipset this version of iMac using?

tdh186 - 답글

You can refer to the 2nd photo(main board photo) shown in Step 6. On the bottom left corner, there is one module from Broadcom. The model is BCM943602CDP.

JJ Wu -

It is the BCM94602CDP but they updated the Bluetooth chipset by the BCM20704

Leonel Tirado -

Do you know if these new iMacs support target display mode via USB-C/Thunderbolt 3 when connected to a new MacBook Pro with TB3 ?

Philip Blatter - 답글

They removed this feature a while back...nice to see it again.

crus -

With the replaceable CPU socket, I want to see what other CPUs you can get this to boot with! Aftermarket CPU upgrades?? :D

Andrew Curtis - 답글

It should work will all the Kaby Lake 7th series CPU's. But I do not think it will work like desktop where you can use Skylake 6th Series CPU's with a Kaby board.

Ash Cooper -

So would a fusion equipped motherboard be upgradable to a larger SSD?

blackketter - 답글

Should be, yeah. The empty pad would have a socket soldered to it, which would hold the SSD, so the blade could probably be upgraded on that.

Do /not/ get the HDD only model, people!

tipoo -

any idea how many usb 3 controllers this thing have ? searching for a device that has 4 dedicated usb 3 ports that can run on full speed each (macbook pro retina only has 2 controllers and 2 ports mac mini has 1 controller and 4 ports :( )

albert - 답글

USB 3 controller is integrated inside intel Z170.


JJ Wu -

How do you know the motherboard is z170?

rahulsenna -

Will it be possible to upgrade the SSD to a higher capacity of another company (Samsung )?

Paulo Apolonia - 답글

I’ve replaced the hdd with a samsung 1tb SSD, successfully.

You’ll have to use the ‘trimforce’ command to enable TRIM support.

Google it:



Benjamin -

With the modular RAM slots facing the rear of the computer, I'm annoyed (not surprised, though) that Apple didn't put a hatch there so I could upgrade the RAM myself. This is difficult enough that I would just eat the $200 to get 16GB of RAM from the get-go. :-/

omar96 - 답글

So if the RAM is user replacable, it means we can put 32GB instead of the 16GB limit Apple is imposing and could swap the CPU to a i7-7700 (upgrading the CPU is too costly imo ) as all i5s support 32GB.

Etienne Plante - 답글

And why is the very same make and model of RAM purchased from Apple Store two to three times more expensive than in retailers like Amazon?

Peter Gamble - 답글

Just spitballing, but theoretically, if you *carefully* cut a door in the back of the case, would you have direct access to the RAM to be able to change it out?

YCAU - 답글

That's thinking outside the box!

Dod Dad -

I am close to liking this, let use know if you figured out something stylish ...

duznik -

what do you recon to be the cost of making this iMac?

Stewart Mason - 답글

I think this should have gotten at least a 5, apple was very generous with giving modular CPU and RAM when before they were soldered before, so they are probably taking notes from us :)

Gigabit87898 - 답글

Wow. Thanks to Intel for no BGA option, we got user replaceable CPU's in our iMac

George A. - 답글

Is the Z170 cooled by the second branch of the heat pipe (the cpu by the other) or is it another chip?

Larry Nolan - 답글

Motherboard code 820-00597-A is right ?

Thien Bui - 답글

Looking forward to a teardown of a model with an SSD. I want to know if it will have a SATA connector (For dual booting Mac/Win I would prefer to have dual SSDs inside my iMac. Would rather BTO it with Apple's lightning fast 1 TB SSD and just add a second SATA SSD or HD). Or will something like this OWC kit provide the cable we need? https://eshop.macsales.com/search/IMACHD...

JM Palacios - 답글

Come on, it's got to be better than 3! This is a marked improvement over the last several editions of iMac, and that deserves some praise and positive reinforcement.

iEvan - 답글

Why give it better than a 3, iEvan? Putting it on a relative scale would seem to reward mediocrity. It's still really hard to repair since you have to take out the screen and all. 3 is the correct score, compared to the 0 or 1 they'd get if everything were soldered and you couldn't open the thing at all.


What's the rating on the PSU? I didn't see a shot of the business side of that where you could zoom in enough to read the markings...

repoman27 - 답글

Does anybody know where I can buy the new warranty stickers? I need them bad!

imamacperson - 답글

Looking forward to 27' IMac Teardown

nathan - 답글

Are the speakers different than the 2015?

Apple has quietly (heh) been doing some amazing work on speakers, including making the 12" Macbook of all things the reference in laptop speaker sound, wondering if the iMacs got the same love. They only specifically call out the new speakers in the iMac Pro.

tipoo - 답글

Would like to see a tear down of the 27" 5K iMac and to confirm that it too does not have soldered RAM

mrmacfixit - 답글

The 27-inch versions (except for the upcoming iMac Pro) have user accessible SODIMM slots that you can get to via a little hatch on the back, same as always. Apple doesn't use memory down (soldered to the logic board) configurations indiscriminately. They go that route for mobile platforms for the considerable power / space savings, and I'm pretty sure we've only seen it in desktop models that use mobile U series processors.

repoman27 -

You can also find documentation on Apple's website about RAM upgrades on their iMac. Which is what lead me here in the first place.

They curiously stated the 21.5" 2017 iMac can be returned to Apple or an authorised service centre for RAM upgrades. I suspected that meant socketed RAM which iFixit comfirmed in this teardown. The socketed CPU was a nice surprise though!


Andrew Curtis -

@repoman27 and Andrew Curtis.

Thanks for the replies, I guess I was confused by the term "configurable" on both the 21.5 and 27 iMac which usually means that the RAM is soldered. Thanks for the link to HT205040 which I had not seen before.

mrmacfixit -

So the consumer version of a consumer machine has user-replaceable RAM, but not the Pro version? Because "pros" have the money and people to have it done for them?!

rjvbertin -

Are you considering a 27'' 5K iMac teardown as well? I know aside from TB3 probably not much has changed,but I'd like to have documentation if I ever need to go inside my machine.

Apollo Justice - 답글

1. Who assembles the IMAC now? Foxconn? Pegatron? Who? Where?

2. Coming from connector industry (being the guy who conceived of a BLGA socket) I would love for you to include analysis of the connectors used.

3. Im including your findings, with appropriate credits and links, to a computer industry report Im doing now.

4. I am working toward US manufacturing of computer systems. See my web site electronicsindustry.org

USCompetitors@ICloud.com John MacWilliams

John MacWilliams - 답글

See above. I think you are doing a great service to the industry. Pls keep it up. And I would love for you to identify the country of origin for all your teardowns. And whether you feel, as I do, that products consumed in North America should be manufactured here. We currently have unacceptable exposure to China for most consumer electronic products from smartphones to X86 Servers. In the event of a conflict in that region we would be unable to get computer products. This comment goes against the grain for the industry, which is very happy they could leverage low cost labor rather than automate production. Plus, most were able to outsource manufacturing to Asian ODM suppliers, not having to make those investments here. On new technology Im working with MIT on a Silicon Photonics project: Future servers will have Tbps lightwave circuitry.

John MacWilliams - 답글

I think you have it all backwards. Without getting too deep into it, I think you blame other countries too much and automation not enough, and I think it's clear that automation has a higher initial investment cost, discouraging some, but that may change. Further, it's not that conflict with China will cut us off from consumer products, but that our interdependence lowers the chance of major conflict occurring in the first place. I understand the desire for protectionism, but not acknowledging the drawbacks of increased consumer prices and lower economic efficiency overall is being dishonest.

US manufacturing can certainly be a good thing, but mandating it via protectionist policy is pretty anti-free market.

What analysis of the connectors is needed? These are standard Intel LGA sockets.


3 out of 10? A zero for me, Apple has built another expensive throwaway, eco unfriendly device (but it's THIN).

R A Stothart - 답글

I can't believe they even ship these things with a standard hard drive nowadays.

Great tutorial though, thanks!

Sjors van Boven - 답글

Eventually, that cmos battery will die and the Imac won't retain info if the power is disconnected.

Mac's have a long useful life unlike Windows junk.

Just another customer centric solution that we have come to expect from Apple, mounting it with zero access in a sealed chassis.

When are we going to see a true upgrade, a service door!

Ross Elkins - 답글

Macs are hardware and Windows is software dude. There is good PC hardware and not so good PC hardware, it's not a uniform experience like with a Mac where everyone gets basically the same hardware. Software and operating systems have a much more meaningful impact on useful life than hardware itself (assuming no colossal design failures...).

Jeremy Harton -

Does the 2.3 GHz model also have upgradable memory?

arcticomp - 답글

Is it possible get a VESA mount on this 21" iMac? If so, what are the options? and how?

Ian Lucero (Ian Lucero Films) - 답글

I've seen an option on the Apple Store webpages whilst buying mine. So yes, there are these options for VESA, but probably you have to decide before buying ...

duznik -

Is there going to be a tear down of the new low end 21.5" iMac as well? I'm curious to find out if that model is modular as well? One would suspect it is the same logic board with a different processor and the standard display.

Chris - 답글

We won't be posting a full teardown, but the entry level model does have removable RAM! The CPU however is soldered in place.

Jeff Suovanen -

Not the most computer literate, but can anyone tell me if the 27" inch iMac would support RAM faster than DDR4-2400? I'd like to put faster RAM in but Apple's site says to only replace it with 2400

Mitchell - 답글

it's not supported but it may be with other cpus. the dependency sits on the CPU side. as far as I remember my classes, it's the frontside bus frequency which decides how fast to interact with the memory level(s).


duznik -

I'm looking at the security of the stand - is it easy to take off when the computer is closed - I've seen some videos that suggest you can just detach the screen from the stand?

Steve Abr - 답글

I just bought the Fusion Drive version of the iMac with plans to upgrade both hard drives. I can’t find any information about the SSD in my new iMac. Just the model number: APPLE SSD SM0032L. It seems impossible to find a blade SSD with the right connector. In fact, it’s impossible to figure out what the connector is. I’m sad that iFixit didn’t bother ordering a Fusion Drive iMac.

Upgrading the 2.5” drive is easy. Does anyone here have information about the SSD portion of the Fusion Drive in my new 2017 4K 21.5 iMac?

Sean - 답글

The SSD has the same 12+16 pin connector found in the SSDs releases from Mid 2013 devices onward. The SSD you currently have installed (SM0032L) is a PCIe 3.0 x4 NVMe SSD, but you ordered a standalone SSD from the factory you would have received a PCIe 3.0 x4 AHCI SSD. More information about upgrading can be found in this link: https://beetstech.com/blog/apple-proprie...

codylhenderson -

I want to know if the blade SSD is the same one as the MacBook Pro has, to where you can interchange their drives.

djfriar - 답글

Since its release, the new iMac 2017 5k can have many things upgraded, as iFixit has said in the teardown.

So I was thinking here: is it possible to replace the i5-7600k or the i7-7700k to the new Cannon Lake i5-8600 or i7-8700k (both have same socket and same power consumption!), so a 2017 machine can become a fast 2018 one?

Gabriel Rossi - 답글

Hello Gabriel, I have the same question as yours. Some said that is impossible due to different bios chipset version for the Cannon Lake. Have you found or tried upgrade it to the 2018 intel core?

Mr.Maker -

Wonder if the SSD only version has the SATA connector on the logic board. If so then I can add one more hard drive to my iMac.

Zhenfu Shi - 답글

With a full breakdown like this would it be possible to remove the stand and install a VESA mount?

Danny Santamarina - 답글

well u can get a vesa mount option when purchasing the iMac. This means it won’t come with the stand.

So on the teardown u can just unscrew the stand from the inside and i guess plonk your own.

pinoyians -

In Step 15, picture 2, where can I purchase another internal microphone ribbon cable? I managed to damage it when removing.

Eric - 답글

where can i get replacement tape to stick the front back on?

dthunter - 답글

Use this adhesive replacement guide and buy the adhesive strips on our store!

Sam Goldheart -

Looking to find out what that first cable that is unplugged in teardown, not the LCD display port, but the other. Having an issue with this iMac display not turning on after RAM replacement, despite everything being in place, unbroken and LCD lights on motherboard indicate all good.

Drarelle Blassingame - 답글

Can you upgrade the 2.3 GHz model with the i5 to an i7 as well?

John Kissun - 답글

Does the logic board allow pcie and m.2 ssd or it just allow sata ssd?

Asif - 답글

Apple uses their own blade SSD interface which is not the same as the M.2 versions. IF you bought a Fusion Drive’d system then you have the connector an SATA drive’d system only has the SATA drive and a SSD only system will have the needed connector. Review this great guide The Ultimate Guide to Apple’s Proprietary SSDs

Dan -

Can I add a SATA SSD instead of the fusion drive?

Chinmay Mirani - 답글

A Fusion Drive is when you have installed both a SATA HDD & Blade SSD and then fuse them together within the OS (you only see the HDD drive as the blade SSD is being used as a cache drive on your desktop, the SSD is hidden). You don’t need to do that!

Many advanced amateurs and pro’s prefer a dual drive set which each drive is independent of each other (within the desktop you see two drives)


If you only have a single drive installed (SATA HDD or blade SSD) then you can replace it with a larger drive or in the case of a SATA HDD switch it out for a SATA SSD. If you have a Fusion Drive based system the smarter direction is to split the Fusion Drive set back to discreet drives and then replace the impish 24 GB blade SSD for something larger! Like a 500 GB or bigger. That way you use the bade SSD for your boot drive as well as the apps drive, leaving the rest empty! Letting the OS and the apps the needed elbow room for virtual RAM, Caching, Paging and scratch space if the application is able to leverage it.


If you are an artist working in graphics, photos or video you’ll want something larger which can also hold your current work piece. If you are into music then you’ll likely want something larger for your instruments as well as the work piece you are working on.


I upgrade pro’s and student systems for a few collages in the area I often install 1 or 2 TB blade SSD drives.

Dan -

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