DDR3 Upgrade for the Apple MacBook Pro (13-inch and 15-inch, Mid 2012) Laptop/Notebook

Crucial Community Forum

The fastest way to get answers to your technical support or customer service questions. Register now to be part of the Crucial online community, so you can search for the information you need.

Live Chat

Hours (MST):
Monday - Friday: 7am - 6pm
Saturday: 8am - 2 pm

Send us an e-mail

For the most immediate feedback, use our Live Chat. Chat hours are 7 a.m. to 6 p.m. (MST) Monday-Friday and 8 a.m. to 2 p.m. Saturday.

Toll-free for US and Canada


Toll-free for Australia and New Zealand

Hours (MST):
Monday - Friday: 7am - 6pm
Saturday: 8am - 2 pm (chat only)

Share or ask for feedback from your Facebook friends.

  Get a friend's opinion.

device type: notebook

Your MacBook Pro (13-inch and 15-inch, Mid 2012) System Specs

System specs as shipped by the manufacturer.
Scan your system to view your specific system configuration.


DDR3 PC3-12800

Memory Type: DDR3 PC3-12800, DDR3 (non-ECC)
Maximum Memory: 16GB
Slots: 2

13" system processors: 2.5GHz Dual Core Intel Core i5 or 2.9GHz Dual Core Intel Core i7 processor. 15" system processors: 2.3GHz Quad Core Intel Core i7, 2.6GHz Quad Core Intel Core i7, or 2.7GHz Intel Core i7 processor.

Memory or DRAM is the "working" memory of the computer. It's used to store data for programs (sequences of instructions) on a temporary basis.

video - installing memory



Storage Drives -- hard drives and solid state drives -- are the permanent memory for the programs and documents on your computer.

Data Transfer Rate is the rate at which data can be sent or received. This is determined by your motherboard. A drive with a higher transfer rate will only run at the rate of the motherboard's transfer rate.

Cache is a type of working memory that allows the drive to perform faster.

RPM is the rotations per minute of a hard drive which effects the speed of data transfer.

Solid State Drives are non-moving memory, so access speed is instant.

8GB, 204-pin SODIMM, DDR3 PC3-12800 memory module

8GB, 204-pin SODIMM, DDR3 PC3-12800 memory module
Part Number: CT3373653
  • Module Size: 8GB
  • Package: 204-pin SODIMM
  • Feature: DDR3 PC3-12800
  • Specs: DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64 • lead free • halogen free • for Mac
    What does this mean?
Guaranteed-compatible with the Apple MacBook Pro (13-inch and 15-inch, Mid 2012)

Crucial Memory for Mac® Systems — DDR3 204-pin SODIMM

DDR3 204-pin SODIMM for Mac

Product Highlights:

  • Increases system performance
  • Compatible with Mac systems
  • Every single module extensively tested at the component and module level for functionality
  • Meets or exceeds Apple's own quality requirements
  • Easy installation
  • Available in DDR2 and DDR3 SODIMMs in capacities up to 8GB
  • DDR3 modules include built-in thermal sensors and advanced lead and halogen-free technology
  • Limited lifetime warranty

At Crucial, we understand something important about Mac computers. They're intuitive and easy to work with. Your memory should be too.

Compatibility for Mac systems.
Engineered to be compatible with your Apple® system, Crucial Memory for Mac takes the guesswork out of a memory upgrade. Since Apple systems often have very specific memory requirements, including particular component densities, speeds, and SPD programming specifications, it's important to buy your memory from people who know Apple computers inside and out. With over a decade of experience manufacturing and developing memory for Apple systems, we make it easy to find memory that's been designed specifically for your system.

Reliability for Mac systems.
If you're an Apple computer user, you probably expect intuitive, reliable performance from your system. We think memory should work the same way, too. For each module we manufacture, we send it through a rigorous testing process to ensure that you're getting a reliable, high-performance memory solution. Every module that leaves our doors has been extensively tested at the component level for voltage and temperature resistances, signal integrity, and software compatibility. The result? Reliable memory that meets or exceeds Apple's own memory requirements. With the latest lead and halogen-free technology and built-in thermal sensors1 to help control your system's cooling, Crucial Memory for Mac features advanced innovations.

Support for Mac systems.
Unsure how to install memory or have an important question about your Apple system? Let our team of experts help! With a tech-savvy team that's well-versed in Apple systems, we'll provide the technical support you need—no matter how old your Mac computer gets. From phone support, videos, FAQ articles, and do-it-yourself guides, we've got the resources you need to keep your system up to speed.

Crucial—quality you can depend on.
Crucial is a trusted name when it comes to DRAM, and that's no coincidence. As a brand of Micron, one of the largest manufacturers of DRAM in the world, we work with our engineers to design, refine, test, manufacture, and support our extensive line of memory modules. With a product portfolio that includes more than 250,000 different DRAM upgrades for more than 50,000 systems, we've got one specifically designed for your Mac system. For more than a decade we've kept Mac computer owners happy with high-performance memory and outstanding customer service. No matter what type of Mac system you have, we've got a compatible solution.

1 DDR3 modules only


by PowerReviews

(based on 6 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.



      Best Uses

          • Was this a gift?:
          • No (4)

        Reviewed by 6 customers

        Sort by

        Displaying reviews 1-6

        Back to top


        You Made It Easy Crucial!

        By Pastor Bob

        from Tampa, FL

        Verified Buyer



            Best Uses

              I just purchased a June 2012 MacBook Pro and upgraded my RAM from 4GB to 10GB. This is my first experience with upgrading a laptop and Crucial made it easy. I used the Crucial diagnostic tool to determine the exact RAM that would work in my laptop, ordered the proper module and easily installed it. I did run into a minor problem with the installation due to my own lack of knowledge, and the Crucial tech support person I chatted with on-line could not have been more helpful. If I upgrade my computer with more RAM or a solid state drive in the future, I will definitely purchase the hardware through Crucial. And, by the way, Crucial's prices are very competitive too! I highly recommend this company.

              • Was this a gift?:
              • No

              Great Product

              By One love

              from California

              Verified Buyer



                  Best Uses

                  • ALWAYS

                  At Crucial.com you get the best deals hands down, love my product I've bought

                  • Was this a gift?:
                  • No

                  Macbook Pro mid 2012 13.5

                  By HH

                  from TX

                  Verified Buyer


                  • Can Buy Slot2 When Needed
                  • Future Memory Lower Cost
                  • Leaves Slot 2 For Future
                  • No issues so far
                  • Run Better With 10gb
                  • Runs Better With 10gb


                    Best Uses

                      Runs better with 10 GB (1x2)+(1x8) than 4 GB (2x2). Running many apps concurrently to test. Have had it for about 3 weeks. Not one issue so far. Leaves slot 2 for future expansion without having to replace both sticks. Future memory pricing should also be lower.

                      • Was this a gift?:
                      • No


                      By Archie

                      from Hampton, Virginia

                      Verified Buyer



                          Best Uses

                            The product arrived on time and when I installed it was okay. I did not encounter any problem with it. I am very satisfied.

                            • Was this a gift?:
                            • No

                            Macbook Pro Early 2011 10GB RAM!

                            By MrTizzay

                            from Boston, MA

                            Verified Buyer


                            • Ease of Install
                            • price
                            • Speed


                              Best Uses

                              • Audio Production
                              • Rendering
                              • Video editing

                              This upgrade installed incredibly easily and quickly and combined with one of the stock memory sticks in the computer and I have a fast 10GB system that lets me RAM render tons of video per minute


                              good product. need proper screwdriver

                              By mel

                              from los angeles ca

                              Verified Buyer

                              seems to be working well. I don't have a lot of experience with other cards for comparision, but what I can say is that is was quite easy to install. Just make sure you have the proper screwdriver. I have a mac and it requires a very small screwdriver. I would rec buying one from crucial if you don't own one. I ended up borrowing one from an optometrist!

                              Displaying reviews 1-6

                              Back to top

                              How much memory do I need?
                              How can I tell if my RAM is bad?
                              The many different types of memory
                              OS X Lion -- how much memory do I need?
                              Everything you need to know about Mac memory upgrades from Crucial.com
                              Another Will MAC RAM work in PC query
                              Ram module "Issues"?
                              6 GIGs of RAM - Bank 0 or Bank 1?
                              Upgraded RAM now computer dead, no power, no fan, no lcd, nothing
                              Moving memory from iMac to Macbook Pro