OWC Unboxes, Tears Down the Late 2015 27-inch iMac Retina 5K

iMac27inch-5k-late2015-1

Apple announced a new batch of iMacs today, so we picked them up and did what any curious person might do – we took them apart and took a look inside!

Check out the gallery below to see what we found when tearing down the Late 2015 27-inch iMac with Retina 5K display.

Some noteworthy observations from the teardown:

  • Model name: iMac
  • Model ID: iMac17,1
  • MFR: MK482LL/A
  • Same memory install process as previous model
  • NVMExpress SSD (24GB)
  • New iMac is compatible with up to 64GB memory. Factory limit is 32GB.
  • CPU is removable .
  • SSD stick is removable 32GB.
  • Two Thunderbolt 2 ports (Check out OWC’s Thunderbolt Central)
  • New keyboard is interesting, a lot of things have changed size-wise. Closer to the MacBook style key, much shorter throw.
  • New mouse feels the same (likely the goal)

Memory Upgrades Up to 64GB
OWC announced today it would soon offer up to 64GB MaxRAM upgrade options for the new iMac with 27” Retina 5K display.

More unboxings/teardowns
See our teardown and unboxing of the new 21.5-inch iMac with Retina 4K (Late 2015) display here: http://blog.macsales.com/33640-owc-tears-down-21-5-inch-imac-retina-4k-confirms-memory-is-soldered

OWC has a great selection of portable and desktop drives. And be sure to check out our Thunderbolt Central page for high performance Thunderbolt solutions.


LEAVE A COMMENT


  • I have got imac 27 late 2015, 3.3 i5, 1tb fusion drive. I am considering to upgrade 24gb SSD m.2 drive up to 512gb, can somebody can tell me is it compatible with Samsung MZVPV512HDGL SM951 M.2 512gb or not?




  • Our 1 yr old 27″Retina iMac has had the hard-drive, logic board & processor replaced & a complete restore of the software. Should I still have all my files intact, even the desk top files? I was expecting everything to be gone? The screen was somewhat damaged at the repair store. It looks as though it was handled by a person with hand lotion on & that it was sneezed on. We were alarmed when the tech brought it out to us. The repair tech used his thumb nail to pop off tiny silver lines that were scattered all over the screen. There are places that will not return back to the overall original black. Lots of places, esp. along the edges, that are a sort of slate/blue color instead of the black. I think the screen was put back on without cleaning the inside of the glass??? Also repair tech did not address the heating up in the lower left portion or the long lasting whirling, tapping noise in the mid to upper right side of computer. My main question is should I still have all my files, as I do? Thanks for your time.




  • Don’t know if anyone has tried this but it working for me.
    Late 2015 27″ 5K imac
    3.2 i5 1TB Fusion drive
    32 GB OWC Ram upgrade.
    Forget opening it up etc.
    OWC Thunderbay Mini
    (4) Samsung 840 256GB SSD
    Configured in Raid 0 – Approx 1TB size
    Using Softraid 5.5
    Installed OSX 10.11.5 Updated
    Then selected as Start up disk.
    When system booted up from TB Mini
    used migration assistant to copy all software and preferences from internal fusion drive to TB mini.
    Once finished, Immediately created a time machine backup on external HDD.
    I’m getting 1100 write 1200 read speeds with blackmagic speed tester.
    System seems reliable.
    I too want to upgrade the guts now. Since they are not available for a reasonable price yet. I found this work around to get me by for now.
    Hope this is helpful to anyone that does not want to wait and needs the performance now using what OWC now offers.

    Cheers,
    reCon




  • Purchased iMac 27inch 1tb April 4th 2016 says made late 2015 iMac CO2R48ZQGG7J UK England nobody says any thing, just found out.
    How do I stand is it old model Purchased not up on
    on this,is their any thing else like security Bit Defender
    not told about it is it needed if so which company.THANKS




  • Hello from Germany,

    maybe any one can help me, i have a Question
    about the iMac 5k without a Fusion-Drive oder a SSD.

    Has the HDD only iMac the Option, to add an PCI-E-SSD or is the Socket not soldered on the logic Board?

    Can any one help me?

    Thank You
    Tim




  • Here we go iMac 27 retina late 2015 SSD speed tests with Blackmagic:

    1 TB Fusion Drive: 340 MB/s write, 810 MB/s read.
    2 TB Fusion Drive: 670 MB/s write, 1816 MB/s read.
    512 GB SSD: 1160 MB/s write, 1746 MB/s read.
    1 TB SSD: 1500 MB/s write, 1824 MB/s.

    All drives where tested with pre configured Apple hardware. The problem I see with the 1 TB Fusion Drive is that the 24 GB SSD will be filled up with applications and will be useless or pretty slow as there won’t be enough space to copy data and make use of the fusion drive.




  • do you prefer mk472 or mk482? It looks almost the same machine, only ssd dimension in fusion drive is much more. (24gb – 128gb)




    • Go for the MK482! It has a 2 TB Fusion Drive with 128 GB SSD. Everything else you will regret. The HDD only option is too slow ant the 1 TB Fusion Drive has just a 24 GB SSD which you will fill up with applications anyway.




  • Has Apple updated the defective hinge design that occurred with the earlier versions?




  • I have a built-to-order configuration of the late 2015 27″ iMac. My Mac comes with a pure flash drive, I would like to know if my model comes with the SATA connector on the mainboard too (giving me the possibility to add a HDD and create a fusion drive or two separate drives), or BTO versions configured with pure flash don’t have a SATA connector on the motherboard. Thank you!




    • I would like to know ASAP also. can someone please confirm that there IS a SATA connector on a late 2015 SSD only iMac so we can add hard drive at a later date?




      • Sadly, I have disassembled my iMac with purely flash, Unfortunately, SATA is not included, they have removed it. You have to buy the cable from third-party.




        • I have some good news everyone. i have the late 2015 imac that was purchased ONLY with a 512 SSD WITHOUT fusion drive. i was also wondering the same thing and i can happily report that the new late 2015 iMACs DO HAVE THE BRACKETS IN PLACE. the more challenging piece was to find the custom SATA cable. i was finally able to get one used from powerbookmedic. the apple part number you need is 923-00092. another challenge was finding the hard drive mounting pins that go into the hard drive. After all however i installed a 5tb drive and i am waiting for my thermal sensor to reduce fan speeds. this is great news since i’ve been trying to find an answer for this myself FOR MONTHS!!




  • I have MK462HN/A 27″ Late 2015 iMac Retina with 1 TB HDD. Can I add additional SSD (without removing HDD)?

    Thanks.




  • JUst put a ssd in place of my 1tb HD without the owc dig thermal kit, and the fans DO NOT run excessively like they did in the past. I guess the later models dont need this anymore.




  • Would like to add a pci sssd stick to my current late 2015 imac27. It only has the standard 1tb hard drive. I have heard the pci slot is empty. Can i just install a pci ssd? What specific ssd should i buy? Thanks




  • If I have a late 2015 imac 27 with standard 1tb hard drive, can i replace it with a ssd?? Thanks




  • I have an iMac 27″ with pre-istalled OS X El Capitan may downgrade to Mavericks???




  • Does anyone know if the base model with the HDD have the PCIE slot for future PCIE SSD upgrade?




  • On late 2015 imac 27 inch model mk482ll/a is the 2tb fusion drive using a disk thats spinning at 5400rpm or 7200 rpm?? I know it also includes a 128 ssd.

    Thanks




  • Was anybody able to figure out if the fusion drive model MK472LL/A includes both a PCIE port and also a SATA connection? Can you split the fusion drive so that only the PCIE and upgrade the SATA to SSD?




  • Can you please give me the specs for the 1TB SSD configuration? Is it 2 lanes or 4?




    • Hi John It’s 4 lanes

      APPLE SSD AP0032H:

      Capacity: 24 GB (24,002,560,000 bytes)
      TRIM Support: Yes
      Model: APPLE SSD AP0032H
      Revision: 6.026.01
      Serial Number:
      Link Width: x4
      Link Speed: 5.0 GT/s
      Detachable Drive: No
      BSD Name: disk1
      Partition Map Type: GPT (GUID Partition Table)
      Removable Media: No
      Volumes:
      EFI:
      Capacity: 314.6 MB (314,572,800 bytes)
      BSD Name: disk1s1
      Content: EFI
      Volume UUID: E783267B-A4C3-3556-B751-DBED770EB996
      disk1s2:
      Capacity: 23.55 GB (23,553,724,416 bytes)
      BSD Name: disk1s2
      Content: Apple_CoreStorage
      Boot OS X:
      Capacity: 134.2 MB (134,217,728 bytes)
      BSD Name: disk1s3
      Content: Apple_Boot
      Volume UUID: 77014549-FAD2-3E75-BBEE-50FBD30280C2

      Intel 10 Series Chipset:

      Vendor: Intel
      Product: 10 Series Chipset
      Link Speed: 6 Gigabit
      Negotiated Link Speed: 3 Gigabit
      Physical Interconnect: SATA
      Description: AHCI Version 1.31 Supported

      APPLE HDD ST1000DM003:

      Capacity: 1 TB (1,000,204,886,016 bytes)
      Model: APPLE HDD ST1000DM003
      Revision: AQ03
      Serial Number:
      Native Command Queuing: Yes
      Queue Depth: 32
      Removable Media: No
      Detachable Drive: No
      BSD Name: disk0
      Rotational Rate: 7200
      Medium Type: Rotational
      Partition Map Type: GPT (GUID Partition Table)
      S.M.A.R.T. status: Verified
      Volumes:
      EFI:
      Capacity: 209.7 MB (209,715,200 bytes)
      BSD Name: disk0s1
      Content: EFI
      Volume UUID: 0E239BC6-F960-3107-89CF-1C97F78BB46B
      disk0s2:
      Capacity: 999.35 GB (999,345,127,424 bytes)
      BSD Name: disk0s2
      Content: Apple_CoreStorage
      Recovery HD:
      Capacity: 650 MB (650,002,432 bytes)
      BSD Name: disk0s3
      Content: Apple_Boot
      Volume UUID: 5A96A9B6-9D0C-3845-A3EF-9B9257DC961F




  • what are the options for adding SSD, I have 27 5K late 2015 with 1TB fusion drive




  • Since your machine was shipped with a HDD, how do you know cables and what-not are needed with one shipped with only a Flash?




    • Hello Tony,

      At this time we have been able to confirm that the new 27″ 5K iMac sent out with only the factory installed SSD can not have a HDD added at this time. This is due to Apple not including the cables/mounting hardware necessary to mount a HDD.




      • Do you see this changing? Maybe a 3rd party will have this soon? Is the logic board configured to accommodate a hard drive or SSD? Apple are a bunch of turd lords.




  • What about the upgradability of the base 27 inch version. Apple made it impossible to make a BTO/cto version from that mac, but it would be interesting to see if mainly the graphics card on that model is upgradable as for all other options mentioned above (memory is for sure)




  • have you guys done a speed test on the ssd yet? Wondering if it’s anywere close to the latest mbpr15″ speeds!




  • I haven’t upgraded a machine for ages and was wondering if it is still best for performance to have all the memory slots filled with the same speed sticks of RAM?




  • Shocking and amazing: In the purchase process…
    Choose Storage
    Click: How much storage is right for you?
    will show:

    The 1TB Fusion Drive pairs a 1TB hard drive with 24GB of fast flash

    !!!!!!?????

    — enough to store important OS X files and applications to ensure fast startup, near instant wake from sleep and quick application launching, with room left over for your most frequently used files and apps. The 2TB and 3TB Fusion Drives pair a larger hard drive with 128GB of fast flash storage, providing even more space for your most frequently used files. For the best performance, iMac systems with 32GB of memory should be configured with a 2TB or larger Fusion Drive or all flash storage.




  • I’m searching for information if the new Imac 5K finally supports Target Display Mode (or at least Display Port 1.3 which should come with Skylake)




  • Will it boot with an i5-6600K or i7-6700k in the socket?




  • Am I missing something or does one of your photos show where you pulled the SSD from?

    Is there room for a memory heat sink? IF(!) it is possible to replace Apple’s SSD with a Samsung 256GB M.2 NVME, that would be nice – but would maybe need a heat sink…




  • If I buy the 512GB SSD from Apple, can I use your HD upgrade kit to install a magnetic drive as well? Will it still support a 3.5″ drive in that scenario or do they occupy the same space/ports?




    • Hello Owen,

      If you buy an iMac with an SSD only and no HDD, Apple does not include the cables/mounting hardware necessary to mount a HDD. You would not be able to add a HDD at this time.

      If you have any other questions, please contact our Technical Support Team and we will be happy to further assist you!




      • If I buy an imac with a fusion drive, could I upgrade the SSD and/or HDD and unfuse the drives? Or would the energy released by splitting fusion drives destroy everything within a 20 mile radius?

        My ideal configuration would be a 512GB SSD and a 1TB or larger HDD. I realize I can add the HDD external, but I’d rather not if it can be internal.




  • Is OWC’s RAM and SSD the same quality than Apple’s? Why such difference in price?




    • Hello MaX,

      OWC RAM meets and/or exceeds Apple/Intel specifications, is fully compliant with JEDEC specifications and is RoHS Certified.

      OWC has also specifically manufactured our SSD’s to work flawlessly in Mac computers. These SSD’s are one of the fastest internal SSDs available, designed and built in the USA and comes with standard 3,5 or 7 year limited warranty depending on the SSD model.

      If you have any further questions, please feel free to contact our Technical Support Team!




  • What is the real-world speed of the new 2015 Apple 27-inch iMac SDXC reader? Does it support UHS-II Maximum Speed (300 MB/s read/write)?




  • Please explain the two small SSDs (24GB and 32GB). Was this iMac configured with a Fusion drive? Have you been able to identify the SSD bus speed to see if it’s faster than the mid 2015 iMacs (Apple says it’s faster but would like some confirmation)? Will OWC be manufacturing/selling SSDs for this model or only RAM?




    • If you take out the stock SSD and put in something like a 256 GB Samsung 950 Pro NVMe M.2 stick, will the system boot from that? Will it keep it separate from the other internal drive or blend them together?

      I am possibly interested in that kind of setup, along with swapping out the hard drive for a cheap/big 2.5″ SSD for data.




    • I have this question as well. I have a good understanding of Apple confusing and ever changing SSD stick proprietary ports, but i’m still confused on the late 2015 5K, esp with this new ’24GB’ base fusion configuration. Does OWC have and upgrade path planned for this?




  • How is it that you can offer 64gb but Apple cannot ?

    Also, can you replace both the SSD and the HD with larger drives creating a two drive computer ? Perhaps a 1TB SSD and a 6TB HD.

    Finally, any thoughts on why no Thunderbolt 3 and USB-C at this time ?