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    Home » Memory

    64.0GB OWC Memory Upgrade Kit

    4 x 16GB 1600MHz DDR3 SO-DIMM PC3-12800
    OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee
    Memory Image
    Product Specs:
    Memory Trade in
    Save money by trading in your original chips! View available memory rebates.
    From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
    Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
    - Please allow up to 14 Days from the time we receive your memory for testing and rebate processing.
    - The OWC Rebate is for up to the same number of memory modules purchased and must be in working order.
    This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
    iMac Intel
    iMac w/Retina 5K display
    (27-inch Late 2015)
    (October 2015)
    Model ID:iMac17,1
    3.2GHz i5, 3.3GHz i5, 4.0GHz i7
    Detailed specs
    Install Videos

    Customer Ratings

    Write a Review 4.9 / 5 332 out of 345 (96%) reviewers would recommend this product
    1 2 3 4 5 6 7
    Verified Buyer
    Reviewer: Douggie Location: Australia Age: Over 65 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Easy to fit, works exactly as expected. November 5, 2018 The 16 GB memory was sent from OWC promptly but delivery within Australia was slow (expected). When it arrived, there was less than ten minutes from shutting down to restarting. As promised, my MacBook Pro recognised the full RAM and where the amount of RAM is paramount, my computer has sped up. Six years old and it has a new lease of life. The RAM is now just quietly doing its job!

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Grandy Location: Farragut TN Age: Over 65 Experience Level: Power User Owned Product: over 6 months
    Rating: 5/5 Fits perfectly - Improves Instantly October 31, 2018 OWC’s memory for my old MacBook Pro laptop had enabled me to avoid trading it in on a faster model. The memory loaded up instantly and functions perfectly right out of the box. OWS’s great “how to” videos made it a snap and I am now one happy Mac user because I can keep my current machine going a few years longer.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: HSTBOY Age: Over 65 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 So easy! October 30, 2018 I had visions of a real effort required to upgrade my MAC till I looked on the web site and saw that there was a simple pop out door. The package was delivered quickly and the change is immediate. The old girl was getting pretty slow and now it is like a new machine for a fraction of the cost. I'm not sure how long the processor will be able to take SW updates, but till then, it's all good.

    I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: DerSchweisserBildhauer
    Rating: 5/5 Satisfies that need for speed October 26, 2018 Lightning fast performance now on this 2012 MacBook Pro-! Maxing out the RAM to 16 gb, along with an SSD makes it perform better than ever imagined; running design, CAD and then CAM programs with Parallels, still no lag whatsoever. OWC's service is prompt and (again) delivered ahead of time. (A nice unexpected bonus included in the package to commemorate the 30th Anniversary of OWC was a mini screwdriver pen and a gift card voucher for an online winery- very cool!)

    I would recommend this item to a friend! This review is from 8.0GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Module. Customer Videos:

    Verified Buyer
    Reviewer: TXiMacUser Location: Dallas, TX
    Rating: 5/5 Excellent Memory October 21, 2018 Our iMac computer was slowing down at times due to an increased number of applications running on the background. This memory was so easy to install and it solved all the problems. No more slow downs.

    This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer Top 250 Contributor
    Reviewer: c3nme Location: Omaha, NE Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Fast wake from sleep and take your computer back from Facebook October 15, 2018 Facebook is a bad product for a lot of reasons. In this case, because of how much of the computer's resources it uses to display a web page. It is often driving the browser up past 3GB. On a machine with only 8GB of RAM, that makes the performance reduce in other areas. I was going to upgrade to 16GB, but opted for 32GB for my spouse's computer and was told that it made a big difference. An easy way to combat the resource hogging Facebook.

    I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Ruddy Location: Indonesia Age: 45-54 Experience Level: Home User
    Rating: 5/5 Great product October 14, 2018 I would recommend this item to a friend! This review is from 8.0GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Module. Customer Videos:
    Verified Buyer
    Reviewer: Sharper
    Rating: 5/5 Dependable parts October 10, 2018 I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:
    Verified Buyer
    Reviewer: greenchimera Location: OH Age: 35-44 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 Performance Improvement September 29, 2018 Notably improved the performance of my aging MacBook Pro. Wish I had purchased this sooner. Another positive experience with OWC!

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Importdreamersllc Location: Biloxi Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Greatest upgrade possible September 20, 2018 This upgrade has definitely brought my MacBook Pro back to life.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Cryptobyte Location: New Hampshire Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 Excellent Memory September 18, 2018 Great, quality memory module.

    I would recommend this item to a friend! This review is from 8.0GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Module. Customer Videos:

    Verified Buyer
    Reviewer: Royal Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 RAM is a Plus September 13, 2018 16mb of RAM is so much better than 4 or 8. The computer works better!

    This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: ihadtochooseanickname Location: Toronto Age: Over 65 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Just like all the other good reviews September 12, 2018 Can't really add anything from all the other good reviews. Came quick, dropped in easily, worked instantly. It's all good.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Debkil Location: Georgia Age: 55-65 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 Great Product and Great Service! September 10, 2018 I bought 16GB upgrade memory for my mid 2012 13 inch MacBook Pro. My computer was extremely slow, and very frustrating to use. After the easy self-install, my computer works better than new! The ordering process was easy, the product came within days, and the installation videos on the website were great! After my installation, my computer was only recognizing 8GB of memory, but after a call to tech support, I was walked through the easy fix! I couldn't be happier!

    This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: kingryt Location: Oregon Age: 35-44 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 Worked September 4, 2018 Mac never advertised that these would work until long after the laptop came out and new operating system software came through. I appreciate that these were also pre-tested and confirmed to work on the same model of Mac. It wasn’t guess work buying and hoping it works.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Len1947 Location: Mississippi Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Easy Order, Easy Install August 22, 2018 This memory upgrade was easy to find and order. With the detailed instructions from OWC the install was equally easy. My Mac Book Pro runs better now than it did out of the box. Also upgraded to an SSD.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: diegot84 Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 Memory works perfectly August 13, 2018 I was able to pick and change the memory because of this excellent web page.

    Thank you!

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: sycamore Location: huntsville,al Age: Over 65 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 8 GB. memory up July 30, 2018 .I had a easy time changing old ones with new ones..thank you for tutorial as well, sycamore Ps. Is this warrantied for the life of my computer ?? is it registered.?

    I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: KariL Location: Orlando, FL
    Rating: 5/5 Great experience! July 30, 2018 Item arrived exactly as described, fast shipping, easy packaging. Good value for the price compared to other vendors. Highly recommend.

    I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Regulator1A Location: Moses Lake, WA Age: 35-44 Experience Level: Gamer Owned Product: less than a month
    Rating: 5/5 This product is high quality and was exactly what I needed. July 30, 2018 The 32GB Memory upgrade kit worked out vary well. This product is high quality and was exactly what I needed. No defects and fully functional.

    I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: twentymiles Location: belvidere,il. Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 works great July 17, 2018 best thing to add to speed up your computer. tutorial to install was perfect as always.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: SmartPenwin Location: Mexico
    Rating: 5/5 Great upgrade for an aging iMac July 16, 2018 Bought the upgrade as from time to time large excel sheets did hurt my 2012 iMac performance. This still a very good computer, and even when not retina I love the display. So I reviewed that memory was reason behind slowdowns. $150 was a very good deal even paying the local tax and import (I'm in Mexico) so went for it and have to tell I am very happy with the difference. iMac is snappy again even when 2 or 3 large excel sheets (over 32k rows) Great product at very good price point.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: mvpereira Location: Rio de Janeiro, BRAZIL Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Just what I needed July 12, 2018 The kit is specifically developed for the Mac I have. Just look for your model and get the improvement in performance you need.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: AceChippe Location: Hickory, NC Age: 25-34 Experience Level: Hobbiest Owned Product: less than a month
    Rating: 5/5 Upgrade galore July 10, 2018 Upgraded to OWC RAM based on reviews, price, and rebate. Along with new SSD, my laptop feels brand new.

    I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    Verified Buyer
    Reviewer: Trish Location: Cleveland, Ohio Age: 55-65 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 Great Service July 7, 2018 I ordered memory for my MacBook Pro on Monday and received it on Thursday. With the help of the videos on the OWC site I was able to install the memory in under 10 minutes and I am now enjoying a Mac that is running much faster!

    I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

    OWC Memory 64.0GB 4 x 16.0GB PC3-12800 DDR3 Kit Mfr P/N: 1600DDR3S64S OWC SKU: OWC1600DDR3S64S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day
    Reviews (345)
    Only $439.96Matched Kit for $394.99
    Add to CartOther World Computing 1600DDR3S64S In Stock, Click to Buy Now
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