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$70.99 off *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)
Must purchase with: PPDPROSUB1Y-REB29

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 / 5 349 out of 365 (96%) reviewers would recommend this product
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Verified Buyer
Reviewer: KCatMidnight Location: Canada Age: 25-34 Experience Level: Home User
Rating: 5/5 Amazing! November 27, 2020 Thank you so much for offering this product and providing clear instructions about what to order/installation videos/etc. it's been a life saver already! The RAM I ordered arrived within a few days and it only took about 5-10 minutes to install.

My Macbook (mid 2012) was having so many issues with loading applications - even opening files and tabs on the browser caused the rainbow pinwheel to pop up for a few seconds/minutes (EVERY time I opened anything!) I recently started a school program where I have to use a lot of video editing apps while running live streams & vid conferences as well, and it was next to impossible to get anything done. Apps kept crashing, sometimes my laptop would freeze & I would have to force restart.

It has caused me so much grief in the past few months and I was really worried that I would need to buy a new computer. It is SO fast now. it's running better than it probably ever has, I wish I did this years ago! I will definitely be recommending this shop and will order from them again if I need anything else. Truly, thank you so much!

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: GreekRacer Location: Tampa, Florida Age: 55-65 Experience Level: Home User Owned Product: 3-4 months
Rating: 5/5 Easy Install and works great November 8, 2020 This was a very easy install and the instructions were easy to follow. Really made my 5 year old iMac run faster. Highly recommend!

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: LilyoftheValley Location: Calgary, Canada Age: 25-34 Experience Level: Noob Owned Product: 3-4 months
Rating: 5/5 Easy to Install October 30, 2020 Even for a non-tech person I found this easy to install and my old 2012 mac is running really well again. Would highly recommend.

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: Daleb Location: Gold Coast Australia Experience Level: Home User Owned Product: 3-4 months
Rating: 5/5 Works well-Installed easily September 22, 2020 This kit is well put together, everything I needed is there in one kit, I fitted and assembled all of the kit and it is installed and running well on my late 2012 27" imac. All of the instructions worked as they said, what I liked the best is how I was able to get everything in a kit form in one place, and the kit was made for this specific imac, I didn't have to second geuss if it was going to work or not, also like the Install instructions that helped me set up the operating system after I installed all the hardware.

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: IREZ3 Location: Traverse City, MI Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Memmory Upgrade For Mac Book PRO September 20, 2020 The price was right and instructions were clear. Easy install with the video directions. I wish I had only listened to getting the right tools as I tried to make due with a jewelers kit. My Mac Book Pro runs better and I can open more programs with the new memory.

I would recommend this item to a friend! This review is from (*) 16.0GB (8GBx2) PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Puchol Location: Valencia, Spain Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 4/5 Great customer service August 26, 2020 Unfortunately the memory didn't run as I expect, but the customer service was exceptional. They helped me to make the return in an agile, fast and efficient way.

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: BeltwayBandit Location: Washington, DC Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Correct products competitively priced August 23, 2020 I needed to improve the performance of my Apple desktop computer by adding additional memory. Because it is an older model, I was uncertain which products to order.

Using OWC's online guidance I was able to easily identify the correct memory for my Mac. Although telephone support was available, it was not needed.

Using the enclosed instructions, the installation was a piece of cake and the new memory installed memory wors like a charm. I strongly recommend 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 Top 250 Contributor
Reviewer: JimS Location: Exeter, RI Age: Over 65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 The more the memory-er August 22, 2020 Memory is so cheap compared to the cost of a decent computer. Next to replacing an HDD with an SDD, maxing out the memory in your computer is the biggest bang-for-the-buck upgrade you can make. I've upgraded several computers with OWC memory and never experienced a single problem.

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: AlwaysMac Location: CA Age: 55-65 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Reliable, High Quality August 20, 2020 RAM works perfectly. Installed easily. I've been using this now for 2 years plus without a hitch. Great upgrade.

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: Mongo Location: Texas Age: Over 65 Experience Level: Hobbiest Owned Product: 3-4 months
Rating: 5/5 Upgrade for an older Mac Book Pro August 15, 2020 OWC has always provided exceptional products for those of us that use their Macs for more than a year or two. This memory upgrade was for a 2012 MacBook Pro. Works great!

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: PeteKV Location: BC, Canada Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Worked as advertised August 15, 2020 Product was as advertised, Upgrade was a great improvement. Our Mac Book has new life, well worth the cost.

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: AKnewbie Location: Alaska Age: Over 65 Experience Level: Home User
Rating: 5/5 Exactly what I needed August 11, 2020 Ordering this was very easy. Instructions to finding my particular MAC was simple to follow and order. Shipping was immediate and I received my order before 2 weeks was up. I have bookmarked this site for future ordering.

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: Blane Location: Idaho Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Awesome RAM August 10, 2020 Always simple and easy doing on-line purchases with OWC. The have great products and prices.

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: OlivierEDH Location: El Dorado Hills, CA. Age: 45-54 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 New RAM for my Mac. August 2, 2020 It was an easy fix. Now my 2012 Mac is working like a new one for a fraction of the price of a new computer.

I would recommend this item to a friend! This review is from 4.0GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 SO-DIMM Memory Module. Customer Videos:

Verified Buyer
Reviewer: Vicki1135 Location: Lincoln, CA Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 The extra memory was well worth the price July 30, 2020 I needed more memory to be able to handle the huge amount of photos and graphics I have. This was a perfect solution at a reasonable price. Highly recommend this product if you need more memory.

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: AdrianLyons Location: Pretoria, South Africa Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Best service and product July 28, 2020 It was great to see the price and then you can be assured of the quality too. Straight out of the box it just works and works and what a life changer. Careful reading and I have double the RAM that was initially catered for. But with so much information both by OWC and via their YouTube Chanel - I took the plunge = it works great! Shipping with DHL and the SMS kept me posted all the way to my door! Thank you for it all

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: baseball643 Location: Lake Mary FL Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great RAM July 5, 2020 Arrived on time and easy install ... and great videos to tell me how to do it! Thanks!

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: norseman
Rating: 5/5 easy to navigate web site made it a breeze to order July 4, 2020 started off not knowing which product I needed for my particular computer model, but was able to easily narrow it down to the specific memory modules I needed for my generation of iMac. A few helpful realtime exchanges with the helpful representative confirmed it. Although I was prepared to wait weeks for delivery (because of the pandemic), the product arrived within a few days. Very satisfied.

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: Sureguru Location: palo alto, ca Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Mac sales once again rocked it.. July 3, 2020 I own a lot of macs at home and I always go to Mac Sales for any parts. This time I bought a 16gb RAM for my mac mini (which had 4gb to start with). This made the mac mini super fast (by reducing the swap files). Installation was a breeze too. Highly recommended.

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: Treborcorp
Rating: 5/5 Total Confidence July 3, 2020 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: ClancyC Location: Boulder, CO Age: Over 65 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Noticeable Improvement July 3, 2020 My wife's 2012 MacBook Pro had 4 GB of memory. Her computer was running quite slow, even after cleaning it out of various files. So I upgraded her computer with 16GB of memory. Quite the difference in speed on just about every task.

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: AdolfoR Location: Monterrey, NL Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Worked as anticipated June 17, 2020 A long awaited memory upgrade for a MacBook Pro 13 in (mid 2012) non retina finally realized. The machine’s speed improved very noticeably using this advanced replacement, as suggested by OWC memory selector. I still need to replace the HD with a solid state one; maybe a dual one. Bottom line: this computer service life has been extended. The set came certified in a nice packaging

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: Kemo Location: oh Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Very happy with my purchase June 7, 2020 I just upgraded my late 2012 iMac 21.5''. to a 1 TB SSD and I went from 8 GB to 16 GB of RAM [The max ram for this IMac] My disk speed went from 80 MBps, to 500 MBps when I install my SSD. Running just as fast as the day I bought it I could not be happier thank you very much Mac sales

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: rickc519 Location: Bayville NJ Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Wow May 20, 2020 My iMac (27-inch, Late 2013) was running so slow and getting the beachball so much that it was virtually unusable. I started shopping for new one but the cost is really prohibitive. I was running with 8 GB of RAM (standard when it was purchased) but saw that the max I could use was 32 GB. I took a $180 gamble and ordered 32 GB of memory. It's like I have a brand new computer. Everything happens instantly when I click it, like it's supposed to. Thank you OWC for saving me ~$1500!!!

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: Kodiac99 Location: Visalia CA Age: 25-34 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 New computer! January 6, 2020 I just received my 16 gig memory chips and my old 2012 Mac book pro is running like new thank you so much. My Mac book pro is amazing and I could and did not want to spend 1k to get a new one this way I got to keep my computer I love. defend recommend this to anyone the videos made it clear on how to instal.

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:

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 (365)
only $784.99
Add to CartOther World Computing 1600DDR3S64S In Stock, Click to Buy Now
Additional Capacities & Kits: 16GB + 8GB Modules 16GB Modules
  • 16GB
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    • OWC Price $199.99
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