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Certain ’10 MacBook, MBP, Mac minis Join 16GB MaxRAM Club

Do you have a 2010 Mac mini, 13” MacBook or 13” MacBook Pro? Can you benefit from more than 8GB of memory? If you answered yes to both, you will be pleased to know that extensive qualification in our test lab has concluded. These Macs are now OWC MaxRAM Certified for up to 16GB with this OWC 16GB Memory Kit available now and specifically qualified just for these Mac models.

While these systems were originally factory limited to 8GB, the right Apple OS version, current EFI update(s), and correct spec/build memory modules now enable them to support and have the full benefit from up to 16GB of installed memory.  This isn’t the first time something like this happened, however, after the fact enabling such a benefit. A while back, we had a similar instance with the Late 2008 MacBook Pros, wherein having the proper OS version and a particular firmware update allowed you to max your RAM out at 8GB vs. a prior 4GB to 6GB max.

Just like with those Late 2008 MBP models, your Mac needs to meet specific criteria for this to work. In the case of the 2010 Macs, here’s what you must have:

  • a Mac mini (Mid-2010), a MacBook (Mid-2010) or a 13” MacBook Pro (Mid-2010)
  • Mac OS X 10.7.5 or later
  • the latest EFI firmware update for your system
  • the proper specification memory modules

As there is the possibility of confusion here, let’s elaborate on those requirements.

A Mac mini, MacBook, or 13” MacBook Pro from 2010

At this time, 16GB MAXRam Certified Support is being Expanded to now include specifically these three 2010 models:

  • Mac mini (Mid 2010)/Mac mini Server (Mid 2010) – Model ID: Macmini4,1
  • MacBook (Mid 2010) – ModelID: MacBook7,1
  • 13” MacBook Pro (Mid 2010) – ModelID: MacBookPro7,1

If you are unsure of which model you have, these instructions will show you how to quickly find out. If your Model ID matches one of those listed above, it is among those now newly supported for the 16GB Max. Using our complete online memory guide, you may also review and quickly determine the available memory options for nearly any Mac model.

OS X 10.7.5 or later

The OS plays a part in how memory is supported and in this case OS 10.7.5 ‘Lion’ or later (including 10.8.x ‘Mountain Lion) is a requirement for upgrading beyond the original 8GB factory maximum.

Latest EFI Update for your machine

Occasionally, Apple will release an update to a machine’s EFI firmware to resolve hardware-level issues. These are Apple recommended updates which include documented additions and/or improvements for your Mac that also have the occasional undocumented benefit as well. As some EFI updates are required for OS Version or application compatibility, we recommend keeping these up to date regardless of whether or not you intend to upgrade to 16GB. These updates come down via Apple Software Update just like other OS updates.

In most cases, if no EFI updater shows up in Software Update, you’ve probably got the latest version already installed. If you want to be extra sure, you can always check Apple’s listing of latest EFI updates to see if yours matches.

The proper modules

Finally, no different than any size upgrade for your Mac, you need to get the right spec memory for your model. Our OWC MaxRAM certified memory upgrades are available in both single 8GB modules and in 16GB matched pairs that are guaranteed correct for the job and lifetime warranty backed.

More memory can really make the difference enabling applications to operate more efficiently and to better utilize the processing horsepower your Mac has always had. Upgrading memory also happens to be one of the easiest and best bang for the buck upgrades you can do today too. It’s a great option to have and great to see up to 16GB support expand to now include these additional Mac models.

A special call out to Paolo D. for his feedback and reporting that put the spotlight back on these Mac models – Thank you!

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  • Don’t know if you are still fielding questions but…

    My situation is very similar to Alp’s, below. I’m hoping to upgrade my MBP 7,1 using the OWC 16GB kit.

    Boot ROM version is MBP71.003F.B00
    SMC version: 1.62f7
    OS 10.13.6

    I tried running this EFI updater:

    and it said it wasn’t supported on this system.

    Do I need to do anything further or should I be good to go to utilize the 16GB?

  • Hi,

    I’m planning to upgrade my wife’s Macbook Pro 13inch Mid2010 (2.4 Ghz Intel Core 2 Duo) by purchasing below parts from your website:

    16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27″ iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13″ 2010
    OWC SKU: OWC8566DDR3S16P

    500GB Mercury Electra 3G 2.5-inch 7mm SATA 3.0Gb/s Solid-State Drive
    OWC SKU: OWCS3D7E3G500

    OWC Data Doubler Optical Bay Hard Drive/SSD Mounting Solution for select Apple Laptop Models

    I’m Linux/PC guy so I don’t know much about OS/X and MACs in general. From what I read on your website in order to upgrade 16G ram we need to install certain OSX and upgrade to latest EFI. Our Hardware specs and OS version as below:

    Model Identifier: MacBookPro7,1
    Boot ROM Version: MBP71.003D.B00
    SMC Version (system): 1.62f7

    When I checked Apple Support website for BIOS/EFI version:
    MacBook Pro (13-inch, Mid 2010) MacBookPro7,1
    MBP71.0039.B0E (EFI 2.5)
    1.62f7 (SMC 1.6)

    I tried Software Update but it didn’t say I need EFI version upgrade. If I purchase above parts from your website, is it OK to upgrade without EFI update (with my current EFI MBP71.003D.B00 and SMC Version:1.62f7) ?


  • Hola que tal tengo una macbook pro 15 pulgadas
    Version 10.10.5
    4 gb ram 1067 DDR3
    Le puedo poner
    8 gb ram 1600 DDR3

  • I’ve started having crashes when 16gb is installed in my 2010 mbp. It has run fine with 16gb for 3 years but now won’t. I have tried new memory as well as testing all four 8gb DIMMS and getting no failures. Is it possible some software or firmware has reverted these machines back to max 8gb? Any tips?

  • can i combine a pc3 and pc3l rams of 8 gb each to make 16gb total in a macbook pro 13″ mid 2012 2.5ghz? currently using 10gb ram (8gb+2gb).

  • Hi, I have a mid-2010 Mac Mini (Macmini4,1) 2.4 GHz Intel Core 2 Duo Boot ROM Version: running OS High Sierra. I bought the 16gb kit from you guys but when I installed it my Mac thinks there is just one gb stick of ram in there and that the second (the higher slot) is empty. I previously had two sticks of gb of ram, one in each slot, totaling 8GB so I know the slots are not bad. After reading all over this website my model should work (at least I think I am understanding the requirements right), so what am I doing wrong here? Thanks!

    • Nevermind, I feel dumb, the ram wasn’t seated properly so I can confirm Mac Mini Midi 2010 (Macmini4,1) works with 16gb of ram.

      • Hi, Matt. Glad you were able to resolve the issue. Let us know if you have any other questions!

  • Hi.
    I have MacBook Pro (13-inch, Mid 2010) 2.4 GHz Intel Core 2 Duo with OS version 10.13.6.
    I want to upgrade its RAM Memory from 8 GB (2×4 GB) to 12 GB (1x 4 GB and 1x 8 GB). Would this work?
    Thank you.

  • I have MacBook Pro (13-inch, Mid 2010) 2.4 GHz Intel Core 2 Duo with OS version 10.13.4.
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.4 GHz
    Number of Processors: 1
    Bus Speed: 1.07 GHz
    Boot ROM Version: MBP71.003D.B00
    SMC Version (system): 1.62f7
    I want to upgrade its RAM memory to 16GB (originally 4GB), is it possible to install 2 X 8GB RAM modules?

    Thanks for your support

  • Hi.
    I have a MBP 13″ mid 2010 Macbook Pro 7,1 Core 2 Duo model A1278 and i want to upgrade its RAM memory to 16GB (originally 4GB), is it possible to install 2 X 8GB RAM modules?

    thanks for your support

  • Dear all,
    hi there, I am Kerem.
    I have two questions which are really important for me.
    1) can i upgrade my macbook pro 6,2 to 16gb RAM?
    2) do i have ssd? if not, which ssd is the best to buy for the laptop?

    hi benj, i dont understand if i have ssd or hdd, how to understand it? if hdd, which ssd to buy for best result?

    i have,
    Model Name: MacBook Pro
    Model Identifier: MacBookPro6,2
    Processor Name: Intel Core i7
    Processor Speed: 2,66 GHz
    Number of Processors: 1
    Total Number of Cores: 2
    L2 Cache (per Core): 256 KB
    L3 Cache: 4 MB
    Memory: 8 GB
    Processor Interconnect Speed: 4.8 GT/s
    Boot ROM Version: MBP61.0057.B11
    SMC Version (system): 1.58f17
    Serial Number (system): W8047A9EAGW
    Hardware UUID: 9F291A89-A8AD-5BE9-A07D-E7563E8BF1D2


    Intel 5 Series Chipset:
    Vendor: Intel
    Product: 5 Series Chipset
    Link Speed: 3 Gigabit
    Negotiated Link Speed: 1.5 Gigabit
    Physical Interconnect: SATA
    Description: AHCI Version 1.30 Supported
    Hitachi HTS545050B9SA02:
    Capacity: 500,11 GB (500.107.862.016 bytes)
    Model: Hitachi HTS545050B9SA02
    Revision: PB4AC60W
    Serial Number: 100926PBL40017K4M73N
    Native Command Queuing: Yes
    Queue Depth: 32
    Removable Media: No
    Detachable Drive: No
    BSD Name: disk0
    Rotational Rate: 5400
    Medium Type: Rotational
    Partition Map Type: GPT (GUID Partition Table)
    S.M.A.R.T. status: Verified
    Capacity: 209,7 MB (209.715.200 byte
    BSD Name: disk0s1
    Content: EFI
    Macintosh HD:
    Capacity: 499,76 GB (499.763.888.128 bytes)
    Writable: Yes
    File System: Journaled HFS+
    BSD Name: disk0s2
    Mount Point: /
    Content: Apple_HFS
    Volume UUID: F5DEB8D6-FB5C-3A18-91E3-C52F42DE5338
    Intel 5 Series Chipset:
    Vendor: Intel
    Product: 5 Series Chipset
    Link Speed: 3 Gigabit
    Negotiated Link Speed: 1.5 Gigabit
    Physical Interconnect: SATA
    Description: AHCI Version 1.30 Supported
    Model: MATSHITADVD-R UJ-898
    Revision: HC10
    Serial Number: UK30 4508ZV
    Native Command Queuing: No
    Detachable Drive: No
    Power Off: Yes
    Async Notification: No

  • Same I have a MBP 5,5 mid 2009
    AND has anyone TRIED 16Go Ram on it ?
    I’m not after the answer “your max is 8” I can find that everywhere but does it actually work ?
    I’m not after someone else answer found somewhere

  • Add me to the list of people who couldn’t get 16GB to work on a Mac Mini 4,1 Server. I had the same symptoms as some others here: only the OEM 2GB module would work in the lower slot. I had upgraded the EFI, reset the PRAM and SMC, and ran the hardware diagnostic tests with no errors reported.

    So be aware that 16GB may not work on at least some Mac Mini 4,1 (Mid-2010) servers.

    • I have a mid 2010 Mac mini server with 16 Gigs
      of 1333Mhz installed and running fine tow 8 gig sticks

  • I saw no comments on my last post. Called for an RMA and followed the suggestions from OWC customer service, exhausting all possibilities that might prevent the 16 Gb of memory from working. The RMA arrangements went very smoothly as I was guided through the process. A cross ship sales order was set up on Tuesday and my replacement memory arrived on Friday with their receipt of the defective memory being the same day. Installed it and successfully booted into 16 Gb on the Mac Mini with no problems. I am very impressed by the support I received and will continue doing business with OWC. I will recommend this well organized company to Mac user friends and family.

  • I just received 16 Gb ram upgrade from OWC. This is for my Mac Mini Server 4,1 mid 2010. I am running Mac OS X 10.11.
    According to what I read on your site, the hardware and OS should allow access to 16 Gb. Upon boot up the Mini will not go past a regular beep accompanied by the flashing indicator. Did I miss something in researching this upgrade? Before I request an RMA, I would appreciate some help. Thanks.

  • Hi, your website says that mid2010 MBP can be upgraded to 16gb (2x8gb). Could you please tell me if it work to my MBP 13″ mid2010 2.4gHz Core2 duo, 7,1 running macOS Sierra ver10.12.4.

    I’m planning to purchase OWC ram 16gb upgrade to my MBP.


  • Hi, I have a 13″ mid 2010 macbook pro 7,1.
    I would like to upgrade to 16GB ram (2x8gb).
    Do you know if DDR3-1600 will work? or do they need to be 1066mhz?

  • Hi! I’m using a macbook pro 13″ mid 2012 (yosimite) Can I safely upgrade to 16gb ram? And can you suggest ram specifications that would fit the MBP best? Thanks!

  • Hello, I have an MacBook Pro “Core 2 Duo” 2.4 13″ Mid-2010Model, A1278 (EMC 2351*) , came stock with 4GB (2x2GB). I would know if I can upgrade it up to 16GB instead of 8GB RAM max? I just looked on your blog and there are people saying that will not work. Can you explain me in details , please? I would buy some RAM Modules. Also do you offer shipping to Ireland or Romania? Thanks in advance!

    • Hi, Jesse. The 15-inch mid-2010 MacBook Pros are compatible with up to 8GB of memory. To find all upgrades for your exact model, check out our My Upgrades page.

  • I just received my upgrade pair of 8GB ram for my Mid 2010 MBP7,1. I’m running OSX 10.10.5 and just installed the most recent updates but my Boot ROM Version still shows MBP71.0039.B0B (not MBP71.0039.B0E). Will this present a problem?
    SMC Version (system) is 1.62f7

      • Thanks Dyllon,

        I previously looked at the download page and hesitated because the sys requirements specifically call for Mac OS X 10.7.2. I have OS X 10.10.5 (Yosemite). It doesn’t state “10.7.2 or LATER versions”.

        Will I have to downgrade my OS to install the EFI Firmware update 2.5? Or can I proceed with Yosemite?

        Thanks again!

        • Great question! You will be able to complete the download with Yosemite without any problems.

          • I’m in the same case but with Captain 10.11.6, but have a concern: “MacBook Pro (13-inch, Mid 2010) EFI Firmware Update 2.5” web page also states “This update enables Lion Recovery from an Internet connection on MacBook Pro (13-inch, Mid 2010) models.”.

            What this mean?. If I download and run the Firmware Update 2.5, will Lion version replace my Captain version?.

            In your answer for Yosemite version you stated that it would run ok. Is the same for Captain version?. Is there any need to donwgrade the OS to Lion version?.

            The “EFI Firmware Update 2.5” web page also talks about using Lion Recovery and refers to “” which refers to recovering from Time Machine.

            Well, I need to be sure before updating the firmware so I’d appreciate some guidance from you.


            • Thank you for your questions Carlos. I will be reaching out to you directly to speak with you further!

  • Hello,

    Is 2009 MBP 5,5 core duo 2.53Ghz a candidate for 16Gb ram upgrade?

  • I have a mid-2009 MBP that I’m trying to determine whether or not can be updated from its current 8 gigs of DDR3 ram to 16 gigs of DDR3L ram. Throughout my research I still have not seen clearly why I cannot update my ram. The information on the net is also all over the place with equal parts saying you can/cannot, but no clear explanation as to why/why not.
    Lastly, if I update my HD drive to an SSD does this mean I could then update to 16 gigs? Thanks for reading through this. Much appreciation!

    • Hello Tyson,

      Great questions! Upgrading your computer to an SSD will not have any affect on if you can put 16GBs of RAM in your computer. This will however allow your computer to have much greater performance!

      In order to determine how much RAM your computer can support, please contact our Technical Support Team! We will be happy to help you!

  • Hi
    I have mac mini mid 2011 and OSX 10.11.5
    Will it work for me? Do you ship to Russia?

  • I have a mid 2010 13 inch macbook white unibody and I just upgraded from 2x2gb to 2x8gb. The problem is that I can’t get my computer to boot with both 8gb cards. They each work with a 2gb card (and my computer registers that it has 10gb ram), but they won’t work together.

  • I have a mid 2010 13inch macbook pro running el capitan, is my macbook upgradeable to 16 gigs of ram?

  • Hi, i have a MBP15″ mid 2010 :
    2,4 GHz intel core i5
    4 go 1067 MHz DDR3

    I want to change my disk for a Samsung Ssd 1 To and I was wondering about the RAM, do you think i can put 2 x 8 go or only 2 x 4 Go

    Thx for help me : )

  • I have a 2009 15 in MacBook Pro my model identifier is MacBookPro5,4. Is this compatible with 16gb RAM?

  • I have a mid-2011 mac mini (core i5, intel graphics)… matched up a 2×8 16GB kit for it and it will not work. I have OSx 10.11… tried to install the efi update and it says it requires 10.9.5 to install… I am wondering if the new efi that may have installed with 10.11 won’t yet work with 16GB?

    • Hello Patrick,

      At this time there are not any known issues with 10.11 running 16GBs of RAM. If you can please contact our Technical Support Team, we will be more than happy to troubleshoot this with you!

  • is my 13 macbook pro Model Identifier: MacBookPro9,2. 2012 modal conpatabil for 16g of ram

  • Hello there, is the mid 2009 17inch macbook pro still maxed out at 8gb or ram? Do you think there may be an update that will allow more RAM? Thank you.

    • Hi, your MacBook Pro model is compatible with up to 8GB of RAM. We can’t speak to any future updates or changes.

    • FWIW, I have been using my 17″ MacBookPro8,3 with 2x8GB DDR3 1333MHz (16GB total) for 5 years now. It truly pains me to use my other MBP’s with 8Gb or less ram. I stuck with OSX10.6.8 until a year ago and now I’m with 10.8.5 (avoiding 10.9-10.10).

  • Hi, I have a late 2008 15 inch mbp, can I upgrade to 8 gb and I have a mac mini mid 2010, can it be upgraded to 16 gb, thanks.

      • Hi,
        The link you provided for Mid2010 MacMini(Model ID: Macmini4,1) seems not correct (it is forMac mini 2011if you open it). Can you confirm which is the correct version of 16.0GB memory for theModel ID: Macmini4,1 please ? I have exactly the same model and I want to try this upgrade.

  • Hello,
    I have the MBP 7,1 2.4GhZ
    (13-inch, Mid 2010)
    I am running OS 10.10.3
    SMC Version (system): 1.62f7
    EFI Update page system requirement says it is only for 10.7
    can I use your 16 gb package too? ?
    Many thanks

      • Hi Michael,

        Elsewhere in this blog page, I was advised to update the EFI. But the requirements specifically call for 10.7

        My current setup:
        13″ mid 2010 macbook pro7,1
        Yosemite 10.10.5
        Boot ROM Version: MBP71.0039.B0B
        SMC Version (system): 1.62f7

        Do I need the EFI update before upgrading the ram to 16GB, or am I good to go?

    • Hi King,
      Would you mind letting me know; did you update your EFI firmware to v.2.5 before upgrading the ram? I have the same setup.
      Many thanks

    • The Mid 2010 13″ MacBook (7,1) and MacBook Pro (7,1) can only handle 1066MHz DDR3 RAM.

        • At OWC we recommend PC3-8500 DDR3 1066MHz SO-DIMM Memory. We do not offer or recommend 1333MHz RAM for the Mid 2010 MacBook Pro 13″.

  • So in theory 16GB should work just fine since I’m running the most current OS on my mid 2010 17in MBP?

    • In the Mid 2010 17″ MacBookPro (MBP) the maximum would only be 8GBs of RAM. Running 16GBs would not be compatible.

      The only 2010 MBP that is compatible with 16GBs is the Mid 2010 13″ (7,1 model)

      • I have been running 16 GB of RAM in my mid-2010 13″ MBP for some time with Mavericks and then Yosemite without incident.

        I would, however, recommend the use of Memory Clean to free up your RAM that apps don’t release.

  • Just purchased OWC 16GB kit for my 2010 Mac mini 4,1. Will only accept 2GB in lower slot. Have upgraded firmwre to latest version for that modle, have reset SMC and zapped PRAM. No go. will accept 8GB in upper slot, but no larger than 2 GB in lower slot.

    • Hello Daniel,

      Im sorry to hear about this issue. I suspect that this may be a problematic chip. I would recommend to test each 8GB chip individually in the known slot that can handle 8GBs. If both are able to be seen, I would recommend to test each 8GB chip in the second slot. If you are still not able to see either 8GB chip in this slot, please contact us so we can further trouble shoot this with you.

      • Have tested both chips in the upper slot, also tested with 4GB chips that worked in top slot and not in the bottom slot.

        • I am sorry to hear of the further troubles you are having. We will be happy to further trouble shoot this with you. Please contact us and we will be more than happy to assist you.

      • Hello,

        I have the same issue. EFI is updated. Running OS 10.10.4. The 8gb module is only accepted on the upper slot. Were you able to resolve this issue?

  • Hi, so is the 15″ version not compatible? Only the 13″? I have a Mid 2010 Macbook Pro 15″. Will this work?

  • It’s weird to me that the 7,1 MacBook Pro supports 16GB of RAM when the 6,2 model does not. I think this is weird because the former was still running a “Core 2 Duo” when the latter is Intel’s i-series chips.

    Is there something I’m not understanding that makes the version with the less powerful chipset the one that is accepting of more RAM?

    7,1 —

    6,2 —

    • Hi Tommy, In the MacBook Pro 7,1 there was an EFI update that allowed the computer to handle more RAM. With the processor (Intel Core 2 Duo “Penryn”), running an operating system of 10.7.5 or higher and the EFI update it was compatible with the 16GBs. As the 6,2 models have a different processor and EFI it would not be compatible.

  • hello, i have a macbook 2010 , 7,1 and i cannot run the 2×4 gb sticks to total the 8gb ram use. It is on snow leapord n is 10.6.8, but when i insert the 2 4gb ram sticks, and i start the macbook, it doesnt turn on/ load, it makes bleep sounds every five seconds. I have checked the ram sticks, they are fine and both are able to run 5 gb in total with one 4gb stick and 1x 1gb stick.

    MY question: Do i need a specific firmware that i am not able to access because i am snow leapord? the ram stick are ddr3 1600mz, so why is my 8gb not able to run?

    many thanks,


  • I checked my mid-2010 MB Pro 2.4GHz is 7,1.
    And I bought 1 pair of OWC 1600 DDR3S 8GB.

    But when I install them to my MBP,it doesn’t boot at all. (Just black screen…)

    So… in order to check memory…
    remain one of 2GB memory which I used, and install one of OWC 8GB memory.
    Then my MBP works very well with 10GB memory…
    And I did it again the other OWC 8GB memory, it also works very well.

    And I finally check if it works with only one of OWC 8GB memory.
    ….. It doesn’t boot….at all…. only black sreen…

    Why it doesn’t work with both of them??
    What should i do???

    plz help me….

    • I’m sorry to hear about the issues. The 16GB of RAM will only work if you have the latest EFI update that comes with 10.7.5 or higher.

      Also If you bought 1600MHz memory that could be part of the issue. Your computer needs 1066MHz memory, this kit exactly.

      Please contact our customer service to arrange a refund for the 1600MHz RAM for the 1066Mz.

  • My wife has a Mid 2010 Macbook (7,1) running 10.6.8 with 2 GB (1GBx2). Is it possible to upgrade to 8GB (4GBx2) without updating to 10.7.5, or is the OS upgrade necessary for both the 8GB and the 16GB upgrade? cites OWC saying that the 8GB upgrade for this machine does not require 10.7.5, but I can’t find that info in your article ( Also, states that 8GB (4GBx2) is not compatible. Please advise.

    • You may upgrade to 8GB (4GBx2) without upgrading past 10.6.8. It is only for 16GB (8GBx2) you need to go up to 10.7.5

  • i’ve got a macbook pro mid-2010 with macbook pro7,1 and all the other requirements for the 16GB upgrade.
    I was wondering if my laptop will run 8GB ram modules with a higher data rate? for example DDR3-1600 as opposed to DDR3-1066.

    • For a MacBookPro7,1 we only advise using DDR3-1066MHz RAM. Having higher specced memory can be unstable

  • is it possible to set my MB Pro 16G?
    its specification is mid-2010 MB Pro 2.4GHz Core2Duo. Please advise.

    • This would depend on the exact model of your mid-2010 MacBook Pro. You will need to see if your computer is a MacBookPro7,1. You can follow these instructions
      to do so

  • Hi, I need to help someone who has a MacBook 7,1 Mid-2010 with 2GB running Snow Leopard. You say to increase to 8GB or more the computer must run 10.7.5. I have Mountain Lion on a USB. Can I install Mountain Lion first and will the computer accept it before I install the 8GB ram? Or do I install the ram first and then try to install Mountain Lion? I’m in a chicken and egg confusion. Please advise.

    • Hello Leah, you need to install 10.8 first then run all your software updates to make sure you have the latest firmware installed. You may then install the 8GB of memory.

  • Installed 16gb ram kit in my mid-2010 13″ MB Pro no problem. Now web content is crashing. Running 10.9.5. Won’t load any webpages in chrome or safari. Pls advise

    • I’m sorry to hear about the issues. I would first recommend checking the websites that are crashing from another device, if they are using Flash content make sure you have the latest adobe flash installed.

      If all software is up to date I recommend trying to clean the memory module. Take a clean pencil eraser and gently rub it along the metal contacts on the memory and follow that by using a microfiber towel along with rubbing alcohol to clean the metal contacts on the memory, this should insure that the memory is getting a solid contact with the computer

      If that doesn’t resolve the issue, I would try both and SMC and PRAM reset.

      SMC reset:


      PRAM Reset:
      1) Start the machine while holding down the Option-Apple-P-R keys

      2) Wait until you hear the 3rd startup chime, then let go of the keys and let the machine boot up.

      Lastly if the issue is still unresolved, I recommend running an application called Rember. Rember is a free download at Once you have it downloaded please run a 3 pass test. This application will let us know if any issues are present on the memory modules.

      If you continue to have any issues or Rember finds any issues with your OWC RAM please contact our tech support

      • I’m having a similar issue. When I put 16gb in, the computer just starts beeping at me when I try to turn it on. EFI is MB71.0039.B0B.

  • I have an mbp (macbookpro6,2) 2.8ghz i7. I was hoping to upgrade from 4mb to 16mb ram. It looks like I am limited to 8. Right? Hmmm. Could I add an ssd for performance along with an upgrade to 8mb? Just trying to squeeze some more life out of this much loved machine.

  • That is perfectly safe. The OS version listed in the requirements is the minimum you need for the update to work. Once you run that update you will be able to use 16GB.

  • Hello,
    I have the right MBP 7,1 2.4GhZ BUT
    The EFI is MB71.0039.B0B
    Instead of MB71.0039.B0E
    I am running Maverick 10.9.4

    EFI Update page system requirement says it is for 10.7

    Therefore the question :
    Is it safe to download and run the EFI update to MB71.0039.B0E on 10.9.4

    And then I guess I can use 16 gb ?

    Many thanks

  • I have Macbook Pro 7.1 and using bootcamp for Windows. Since operating system playing an important role of this max 16gb ram, can I use 2×8 GB with Windows as well?

    • While the OS does factor into the ability of use the 16GB max, having the latest EFI firmware installed is the most important. If you have the latest EFI installed you may install a Windows OS via Bootcamp and have it work with 16GB of RAM, assuming your Windows version supports that amount of RAM.

  • Saying I’ve got to upgrade to 10.7 to put more memory in my Mac is like saying I’d need to cut off a toe to buy new shoes. I want the shoes, but I think I’ll keep my toes.

  • I have a mid 2012 MacBook Pro 13″. According to the link you mentioned, my Boot ROM version and SMC version are updated. I have 2 4GB ram’s right now. Will 2 8GB work for me?

  • Yesterday I received my 2×8 GB memory upgrade for my Mac mini Server mid 2010 (macmini4,1).
    It has the latest EFI (Boot ROM MM41.0042.B03) and runs OS X 10.9.2.

    Unfortunately it only works when using only one of the memory modules (both work fine, as always with you guys. This is not my first hardware upgrade from you, and it always worked perfectly).
    When I put in both, the machine doesn’t boot and beeps, signaling something wrong with memory.
    When I put back my old memory modules (2x2GB), it works fine again.

    So: I received perfectly working 8 GB modules from OWC, and I don’t have damaged memory slots.

    I double checked all the requirements; what am I missing?

    Bob, from The Netherlands

    • I’m sorry to hear that it is giving you trouble. There are a couple things to try that will likely fix this. The best way to start is to install both the 8GB modules and reset the SMC and PRAM. If that doesn’t work please contact our tech support team via phone at 800-869-9152, or 815-338-8685 internationally; by chat; or by e-mail.

      • Great advice! Resting NVRAM and SMC did the trick. Now my Mac mini is running with 16 gigs of RAMfrom OWC. Yay!

  • Hello. Seriously considering this option to upgrade my mid 2013 Macbook Pro 13″ but have recently seen for the Macbook Pro to receive such a jump from the factory fitted 4GB to 16GB needs modification via boot up – is this correct?
    I was hoping just to replace the memory with the upgraded 16GB and then switch on.
    Also, do you deliver to Denmark?



    • Yes, you do need to install the latest EFI firmware update for your system – follow the links in the article to make sure yours is up to date.
      We do ship worldwide, including Denmark.

  • Hi,

    This is excellent news, and I plan to upgrade my MBP to 16GB if I can. My machine fits the listed requirements BUT my hard drive is partitioned. I’m running 10.9 Mavericks on one partition, 10.68 Snow Leopard on the other. Am I still good to go sweet-16? (My firmware is up to date.)

    Macbook Pro 13″ Mid 2010
    Latest firmware – 1.62f7
    OS 10.9.1
    OS 10.6.8

    If the Snow Leopard partition only recognizes 8GB, that’s fine. I just need it to run without issue and for the Mavericks partition to use all 16.

    Thank you,

    • This was a really interesting question that we had to test specifically for. We have found that With the firmware updated and booted into 10.6.8 the OS is stable. 10.6.8 will report 16GB of memory but only utilize 8GB of memory, unless you force boot the OS into 64 bit mode. If you ever need to reinstall 10.6 you will need to remove one of the 8GB modules for it to install. Once the install is complete you can reinstall the second 8gb module.

  • Has testing been done with Mavericks OS X 10.9? I have a Macbook Pro 7,1 with factor RAM installed, I just want to make sure there isn’t any problems with 16gb interfacing with Mavericks. Also, has this been tested with Windows 7 running in bootcamp?

    • No issues have been encountered or reported with our memory in upgrading to Mavericks, and yes, the memory is available to Windows via bootcamp as well.

      • I received the pair of rams today and installed it on my mid 2010 macbook running on mavericks. Boots normally, but it has twice restarted by itself! I am getting slightly concerned and not very confident in doing my work especially when it comes to saving documents!

  • I just received m 16 G RAM for my 13″ mid2010 MacBook Pro and installed it. It works like a champ. It sees all 16GB of memory in both OS X 10.8.4 and Ubuntu Linux 12.04.2. I am really happy with it. Thanks guys.

  • Hey. I’m really not a technical person… But I just want to be sure about what EFI etc that is required. I have the one apple state is the newest one for my machine (Mid-2013) 13″ Macbook Pro.

    What i got is:
    Start-ROM-versjon: MBP71.0039.B0E (Boot)
    SMC-versjon (system): 1.62f7 (SMC)

    • Sure, while the memory is used most efficiently when there are equal amounts in each slot, our testing has shown that more memory always trumps matched capacity.

  • Do you think Apple will release a firmware update that allows 2010 15″ i5 MacBook Pro owners to upgrade to 16GB? I feel kind of ripped off now that the mac mini, 13″ and 17″ all can but the 15″ MBP got left behind…

      • What happens when you use the 10.6.8 64-bit kernel with a 16G machine? Does it only see 8G? Does it fail to boot entirely?

        • It isn’t quite as easy as that – in order to run the latest EFI firmware updater (which allows the additional memory to be addressed) the machine needs to be running 10.7.x
          Now, If you’ve updated the OS, run the EFI firmware update, then are going back to 10.6.8 in 64-bit mode – the memory is fully addressable.
          Unfortunately, I can’t definitively say what issues arise in one of these machines running 10.6.8 in 64-bit mode without the firmware update since all our in-house machines have had the EFI firmware update applied.

  • Hi OWC.

    I have a mid-2010 15″ MBP that has a bad ram socket. My computer was crashing and beeping on a regular basis and It took me a while to locate the issue. Now I have just one 4gb block in the top slot and everything is running fine. Would it be possible to install JUST ONE 8gb 1066mhz block from OWC? Would it work?


    • This is a great question that is commonly asked. We always recommend to have matched pairs of memory installed in your computer when possible. Having a single 8gb module installed, while normally not recommended, will be fine for your computer.

        • I apologize for the confusion, I misread your computer as a 2011 MacBook Pro not a 2010. A 2010 MacBook Pro can only support 4GBs per slot.

  • Thanks Richard..

    I sent my request; I hope someone at Apple helps us. It will help to confirm my high opinion of this company.


  • I own a MacBookPro 7,1…. Will it work whith latest OSX: 10.8.3?

    Do you think that Apple could limit the maximum memory capability to 8GB in the future? Maybe limiting it by an EFI update.

    • Once an EFI firmware update provides usage of additional memory in any given system, it is completely useable. Subsequent updates have never reverted compatibility.

  • Hi there,

    I have a Mid-2010 white MacBook with OS X Mountain Lion 10.8.2, but not sure about which EFI version is installed, how can I check it? What would happen if an older EFI is loaded while the 16GB ram is inserted? Thanks.

  • According to OS X System Profiler, MacBook’s made in 2010 support only 1067 MHz Memory. Surprisingly there are no such memory modules – 1067 MHz 8 GB – nowhere on the Internet except of your own OWC Modules.

    If I install standard available 1600 MHz modules into a 2010 MacBook 13′, will the computer screw the frequency down by itself?

    Thank you.

    • The Apple 2.4GHz MacBook Mid 2010 (Model ID: MacBook7,1) as is subject of this post, accepts PC3-8500 1066MHz DDR3 SoDIMMs.
      The PC3-12800 DDR3L 1600MHz SO-DIMMs you are referring to are not compatible.
      Additionally OS X 10.7.5 or later is REQUIRED for utilization of more than 8GB of total system memory.

  • Hi guys, first of all thanks for the great work you’re doing.
    Regarding the matter of 16GB RAM on MBP6,2 (15-inch, Mid 2010), some people have been fiddling around and it seems they managed to address all the 2x8GB RAM, running Ubuntu 12.10. Plus, 16GB are recognizable in Safe Mode on OSX 10.8.2.
    So, could this be another EFI / SMC thing? And if so, would the SMC Firmware Update 1.7 -released two days ago- help address this matter?
    Please let us know if you find something in your top-secret labs. :)


    – here is the link to the apple discussion topic:

  • Hi guys – I’m looking at buying a second hand Macbook Pro Mid-2010:

    Model ID MacBookPro7,1
    Model Number A1278
    MPN MC374B/A
    EAN 885909358724

    Will this take 16GB RAM?

    • Yes, the 13” MacBook Pro (Mid 2010) – ModelID: MacBookPro7,1 is one of the machines listed in this article.

  • I’m using windows 7, 32bit running in Virtualbox in my MacBook Pro 7.1. I use it primarily to run AutoCad 12/13 and wanted to upgrade it to 16gig. Will it be utilize?


    • It certainly should utilize the memory. We did some testing using Windows and Bootcamp and there is no reason to believe that running windows through a virtualization program should be any different.

  • Have you done any other testing to see how 16gb works with Bootcamp MBPs? I run Windows 8 quite a bit, and was wondering.

    • Actually, we did test this in the Mac mini 2010 model with Windows 8 x64 and it did recognize and utilize all 16GB of RAM.

    • Juergen, was yours a 15″ or 13″ MacBook Pro? i have a MacBookPro6.2 (mid-2010)

  • There was no mention in the article whether or not you tested other mid-2010 model MacBook Pro’s. I currently have a 15″ i5 Mid-2010 MBP and I’m going to do a memory upgrade very soon and it would be great news if my laptop supported the 16GB of RAM.

    With the testing that you performed, are you unsure whether my laptop can support 16GB or have you tested the i5/i7 models? I just need confirmation that this will not work, or is currently un-tested.


    • It was indeed tested, however, only the models listed in the article had any changes.

  • Many thanks to OWC for the info. I keep a 10.6.8 backup system on a 2010 MacMini for 1 Rosetta app. If I install 10.7.x on the mini for the firmware update and reload 10.6.8, will 10.6.8 address 16G ram? Let’s assume I install a pair of 8G chips, run the firmware update in 10.7, etc, and clone my old system back to the mini.

    That would interest me ;)

    • We tried that in our testing and while the memory will still all show in system profiler, it does require 10.7.5 or later to actually address the memory.

  • So what exactly is the conclusion for the late 2008 MBP Unibody (15″)? I’m trying to squeeze as much life as I can out of the one I have, going up to 8gb of ram and a ssd makes a big difference but I’d like to push it to 16gb ram if possible. Have you done any official tests?

  • Any way to make this work with the 15″ 2010 MacBook Pro?

    I hate to have to get rid of mine so quickly after buying it, but I find I really need 16GB to run the virtualization environments I need these days. 8GB won’t cut it anymore, even after upgraded to a SSD boot drive.

    • No, we did our diligence in testing the 15″ and 17″ models but the 13″ was the only 2010 MBP model that could go to 16GB.

      • How bizarre! I wonder if Apple are aware that they only did one model? This sounds like a “Dear Tim” item.

        • It was less one model and more related to the common chipset these all share in common. Likely was either the goodwill of an engineer that enabled this quietly or, and just as likely, a required change to support a change in how a function in new OS, etc operated had this unintended benefit. Unintended as this is not something Apple documented with the release of any EFI or OS update. FWIW – once Apple sets specs on a system, they don’t change them. If it shipped with the factory saying it only goes to 8GB – that’s what they leave it at. Of further note – there are lots of cases where even right from the factory a system can go higher without issue than the original factory stated limit. Comes down to what Apple chose to qualify at the time for various reasons as well as technical considerations. I haven’t seen them intentionally hold back memory capabilities at system launch to be fair.

          It was only about 18 months ago that we first started offering 8GB SO-DIMMs / 16GB Kits. Before that 4GB per SO-DIMM module had been maximum for DDR2 and DDR3 SO Modules for a good 5 years. It will get there.

          • Larry, when you tested the mid-2010 MacBookPro6,2 laptops with 16GB, was this with the latest EFI and 10.7.5 or above?

            I understand the MBP61.0057.BOF SMC version 1.58f17 was posted after your comment in Dec, 2012.

            • We did test with MacBook Pro SMC Firmware Update 1.7 for more than 2x4GB RAM support with the MacBookPro6,1 and MacBookPro6,2 – there was no change.

    • The limitation on the others appears to be hardware chipset. Either way – Apple holds the keys to the EFI kindom where any kind of change to addressable exists. And again – most, if not all of the other 8GB still limited are so due to actual hardware limits.

      • Would you care to elaborate on the hardware limitations involved? Is Apple installing old, out of date hardware again?

        • Not suggesting anything wrong by Apple on this at all. Just factor of chipsets involved for both processor and video and registers available for addressing memory.

  • I made a request through for a firmware update to the late 2008 MBP (unibody), which is currently limited to 8 GB RAM, to enable it to utilize 16 GB RAM (2 x 8 GB). I am advised that the hardware is capable of supporting 16 GB RAM, but that the firmware limits it to 8 GB (as shipped, it supported 4 GB and then 6 via firmware update and now 8 GB via firmware update). I think the more of us who request such firmware updates the greater the likelihood of actually getting them. Frankly, Apple should simply allow the hardware to address any amount of RAM the hardware (and now 64-bit OS) will support across the board.

    Just wait until 16 GB sticks become commonplace and affordable! :-)

    • I went and did a quick search and there are Samsung 16 GB sticks available for around $120. Come on Apple. Get with it!

      • At present I am not aware of any config to build or anyone building a 16GB 204 Pin DDR3 SO-DIMM. 240 Pin Long DIMMs for desktop systems and servers, but not the short SO Modules for that Mac mini, iMac, MacBook, and MacBook Pro models would require. Believe me – this is an area (204 pin DDR3 SO) we are always looking to push the envelope on and do hope to build a 16GB module one way or the other. :)

    • With the original 2008 MBP Unibody, we were able to MAXRam those to 6GB as they shipped and then later the EFI update ‘quietly’ enabled the full 8GB max. There are other considerations beyond the OS capabilities as well. Anyway, 16GB SO-DIMM modules are bit off due to the density leap involved for the devices to make a module for this application – but none the less. :)

      • Windows (fought!) people who believe that 4 to 6 GB RAM is “enough” notwithstanding, it seems fairly intuitive that processors that are starved for data should benefit from more RAM. While 8 GB in the 2008 MBP unibody is an improvement, I can not see any real reason that 16 GB (2 x 8 GB) should not be enabled and, without testing, it is impossible for me to say that this particular MBP would benefit from it, but any data intensive application such as Photoshop or Lightroom should benefit from loading data in RAM rather than having to reach back to a drive, be it a SSD or a HDD. I was very surprised when I found a reference to Samsung, yes, that Samsung, 1×16 GB sticks for about $120. That tells me that they are on the brink of becoming mainstream…probably as other manufacturers come online with them. I would not mind paying $240 for 32 GB of RAM in my MBP or my Mac mini though I suspect prices will fall rapidly in the near future, certainly by the time Apple gets around to doing anything about enabling that capability, even in their new machines. An iMac with 4 x 16 GB RAM would be an interesting proposition indeed, though there may be some hardware limitations which would prevent this from being done.

        Cheers! :-)

        • There is no 16GB SO-DIMM on the brink of availability today. I wish there was – but such appears a good bit off and will likely be quite a premium product when it does first emerge. Again, there are 16GB DIMMs – which are more than twice the physical size of an SO-DIMM that achieve 16GB by using twice as many of the same chips found on a 8GB SO-DIMM…. but that’s it thus far.

    • Hello Richard,

      Please provide the contact information required to request Apple for a firmware upgrade; I have a 2010 MBP 15″ that, unfortunately, is not upgradeable past 8 gb ram, despite the 13″ model of the same series being capable of this.
      I have read it is due to the dual mode of video processing in the 15 and 17 inch models, that is not present in the 13..
      Some work-around is probably possible, if the interest exists.


      • Hello Glenn,

        I simply sent the request to I would not hold my breath waiting for Apple to do so, but I figured it was worth a few minutes to send in the request. It certainly would be nice if they did update the firmware.