DDR3 Upgrade for the Apple MacBook Pro (15-inch, Mid 2009) Laptop/Notebook

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device type: notebook

Your MacBook Pro (15-inch, Mid 2009) System Specs

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


DDR3 PC3-8500

Memory Type: DDR3 PC3-8500, DDR3 (non-ECC)
Maximum Memory: 8GB
Slots: 2

These 15" systems may utilize one of the following processors: 2.53GHz, 2.66GHz, 2.8GHz or 3.06GHz Intel Core 2 Duo processors.

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.

Graphics Card:

nVidia GeForce 9400M Graphics

External Connector: 15-hole connector

Graphics Card A circuit board fitted to a computer containing the necessary video memory and other electronics to provide a bitmap display. Adaptors vary in the resolution (number of pixels) and number of colours they can display, and in the refresh rate they support. These parameters are also limited by the monitor to which the adaptor is connected.

4GB, 204-pin SODIMM, DDR3 PC3-8500 memory module

4GB, 204-pin SODIMM, DDR3 PC3-8500 memory module
Part Number: CT3309359
  • Module Size: 4GB
  • Package: 204-pin SODIMM
  • Feature: DDR3 PC3-8500
  • Specs: DDR3 PC3-8500 • CL=7 • Unbuffered • NON-ECC • DDR3-1066 • 1.35V • 512Meg x 64 • lead free • halogen free • for Mac
    What does this mean?
Guaranteed-compatible with the Apple MacBook Pro (15-inch, Mid 2009)

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 5 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 (3)

        Reviewed by 5 customers

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        Displaying reviews 1-5

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        4gb Memory for my Mac book pro

        By Jay

        from Boston ma

        Verified Buyer

        I got it fast in it is the best Purchase I did love it thanks


        quick RAM upgrade

        By Fleetamus

        from Buellton, CA

        Verified Buyer



            Best Uses

              Less than 5 mins to double my RAM. I should've done this years ago....

              • Was this a gift?:
              • No

              Worked like a charm...

              By aheath

              from San Francisco, CA

              Verified Buyer



                  Best Uses

                    I ran an update from 2 2GB cards to 2 4GB cards on my MacBook Pro - and it's made a tremendous difference in performance... resulting in a lot less time of me sitting twiddling my thumbs while I'm uploading larger db's to my local development sites.

                    • Was this a gift?:
                    • No

                    Fast & Furious

                    By Amey

                    from New Port Richey, FL

                    Verified Buyer


                    • Easy To Install
                    • Inexpensive
                    • Quick delivery


                    • NA
                    • none

                    Best Uses

                      My MacBook Pro was a bit sluggish but I hadn't doubled the RAM to its full capacity. On the suggestion of an Apple Genius, I ordered 8Gb from Crucial. It was delivered 2 days later using the standard shipping. Installation was a little tricky because I have the unibody model which required me to unscrew and remove the cover from the bottom of the machine. I'm not very mechanically inclined so I was nervous, but everything went very smoothly. After about 15 minutes I was logged on again and very happy with the processing speed.

                      My only negative experience was the installation video - it didn't apply to my computer model so I was figuring it out on my own.

                      • Was this a gift?:
                      • No

                      Great site and product

                      By BE

                      from San Francisco

                      Verified Buyer


                      • Computer Scanner Awesome
                      • Great Informative Site


                        Best Uses

                          I order memory for my MacBook Pro. They even provided and informative video. Great service.

                          Displaying reviews 1-5

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