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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.
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 Mid 2015)
(May 2015)
Model ID: iMac15,1
3.3GHz i5, 3.5GHz i5, 4.0GHz i7
iMac Intel
iMac w/Retina 5K display
(27-inch Late 2014)
(October 2014)
Model ID: iMac15,1
3.5GHz i5, 4.0GHz i7
iMac Intel
iMac (27-inch Late 2013)
(September 2013)
Model ID: iMac14,2
3.2GHz i5, 3.4GHz i5, 3.5GHz i7
iMac Intel
iMac (27-inch Late 2012)
(October 2012)
Model ID: iMac13,2
2.9GHz i5, 3.2GHz i5, 3.4GHz i7

Customer Ratings

Write a Review 5 / 5 33 out of 34 (97%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: Tokyo, Japan Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Triple A service December 21, 2015 When I needed to expand the memory on my iMac, the OWC website made it very easy to determine what I needed, and the very useful installation videos made it a breeze to install the memory when it arrived. The price was reasonable, the service exemplary, and the delivery to Japan was surprisingly quick. It was only a matter of days from the time I ordered until my iMac was upgraded. All in all an ideal transaction. I won't hesitate to order from OWC again and I'll certainly recommend OWC to my friends. Kudos for providing such top notch service.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: DOHA - Qatar Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Works perfect December 5, 2015 I got these memory modules to replace the original RAM setup (8 GB) of my iMac 5K . Working very well, not any single issued until now. I recommend this product.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Sao Paulo/BR Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Very cool upgrade for any 2014/2015 iMac November 15, 2015 Get your new iMac upgraded to 32GB instead of ordering from Apple, pay fair market for memory and let it fly! Kit comes on a small, resistant less resource consuming box and it is easy to install. For customers in US you might be able to get rebate for the original Apple cards!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Vienna, Austria Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Everything as expected October 30, 2015 I was very pleased with the service, with the quick email replies, with the prices and with the product. I will definitely recommend OWC and use it in the future.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Minneapolis, Minnesota Age: 25-34 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Works great for less than half the price of Apple's upgrade. October 24, 2015 Bought this for my New 27-inch iMac with Retina 5K display 3.5 Hz Processor, and it works great! Apple was going to charge me $600 for this same upgrade.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Maple Valley, Wa Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 32 GB Ram Memory October 20, 2015 the 32 GB of Ram came in a clean package with installation instructions. After completing this installation the ram work as it should. Met all my expectations, but if you decide to buy this ram, as I did, to fix the "application out of memory" problem I suggest you look up a video on why your applications run out of memory.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: New York, NY Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 SUPER FAST DELIVERY - WORKS WITHOUT ANY ISSUES! October 8, 2015 I had read recommendations in the Apple Forums concerning the great quality of the OWC RAM and so far everything they said was correct. My new iMac is lightning fast and the installation went without any issues. The OWC installation video which is a great feature to have on their website made the process "idiot proof"! It took me about 90 seconds and the RAM was immediately recognized when I rebooted my new 5k Retina iMac.

The delivery to me was super fast which is important when ordering anything related to a computer. Also I love the rebate program that OWC offers for the RAM that was originally installed in the iMac and I received a check in about 2 weeks. It was a simple process and saved me the work of listing it on eBay.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: NJ Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Worked Perfectly October 2, 2015 I ordered this because from OWC because they had the only memory selector that gave my full confidence that I was buying the right memory for my Retina 27" Late 2014.

I was also very please how easy it was to send the original 8Gb memory back to them for a cash trade in.

The memory installed without issue and was immediately visiible.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Windsor, ON Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Mac memory upgrade August 9, 2015 I have purchased memory upgrades for my iMacs and Macbook Pro form OWC on three occasions over the past few years and have never had a problem. OWC is my source for memory upgrades.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: San Diego, CA
Rating: 5/5 Runs Great July 28, 2015 Cheaper than Apple solution, but works perfect

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Houston, TX Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Fabulous Product & Great Service June 23, 2015 I bought these memory modules for a new 27" iMac retina display. To save on the initial investment cost, I ordered the iMac with the minimum 8GB and then quickly upgraded to 32GB. The ease of installation is just great! No problems. Did the install in matter of minutes. The iMac speed is blazing fast - yes, I know it is not a scientific basis - but the overall performance is better than with the original 8GB installed. Would highly recommend these memory modules.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Mission Viejo, CA Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Works great, even better price June 17, 2015 Way cheaper than getting it from Apple. The installation video was also very helpful.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Northport Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Easy to install,works well May 3, 2015 I've installed quite a few memory DIMMS in my time. In a previous job I was in charge of hardware for a workstation manufacturer. My wife just purchased a Retina 5K iMac. Turns out that installing memory is one of the few things that a user can do. And it it is very easy to do. There is little reason not to max out the memory as we will use the iMac for Photoshop duties for the foreseeable future.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Saint Louis, MO Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 It all just worked March 5, 2015 I bought my new iMac 5K with the standard 8GB of RAM, and ordered the OWC 32GB upgrade kit at the same time. The memory upgrade arrived first; the iMac a few days later. Switching out the memory took maybe 2 minutes at most. The iMac works great and the OWC rebate program (sending in the 8GB of RAM I removed from the iMac) also went without a snag.

What can I say? It just all worked.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Mexico, DF Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Good quality February 9, 2015 There are 32 GB memory for your Mac with lifetime warranty, that's you only need to know, makes your Mac faster running heavy apps at the same time, adds better performance to Photoshop, Flash, Final cut or After Effects, in general every 64 bit app, I love it!!

I would recommend this item to a friend! Customer Photo: Customer Video: View Customer Video on YouTube

Verified Buyer
Reviewer: Anonymous Location: Dublin, Ireland Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Pain free RAM upgrade January 29, 2015 Prompt delivery of a first grade product at a fraction of the Mac option = a painless max out of RAM!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Tasmania, Australia Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Quality, price and service as always January 1, 2015 I have been purchasing from OWC for some years now and they continue to live up to their excellent reputation.

The memory was as described, was delivered quickly and reliably, and works without problems.

Verified Buyer
Reviewer: Anonymous Location: Florence, Italy Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Outstanding upgrade for iMac Retina!!! December 31, 2014 The OWC memory modules are a MUST for every serious iMac Retina user!

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Oakland, CA Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Just works December 22, 2014 Easy to install in my new iMac. No problems since installing. I have been using OWC memory for over a decade, and have never had a compatibility issue or had the memory fail in any way.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Excellent December 18, 2014 This was one of the easiest RAM upgrades I have ever installed. Mostly the Ive Apple design of the 5k iMac. However, the RAM slipped in just as illustrated.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: minneapolis Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Great Ram December 15, 2014 All the Ram we have ordered over the years is still working. I will always go to OWC for the Ram I need for my machines.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Palm Harbor, FL Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great RAM December 11, 2014 I've always bought my Mac RAM from OWC. Never had a problem. This upgrade supercharged my iMac.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Tenerife, Spain Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Totalmente recomendable November 19, 2014 amplié mi iMac 5K Retina de los 8 Gb que tenía a los 32 Gb de OWC y el cambio ha sido brutal, perfecto, ahora va mucho mejor.

El envío muy rápido, la instalación en 1 minuto, todo muy bien, empresa muy seria.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Virginia Beach Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Needed More Memory November 12, 2014 I needed more memory and, as usual OWC came through. Excellent product and easy to follow directions. OWC has a vast amount of resources, both written and video, to help with installation.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Middle of nowhere Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Good price, good product October 12, 2014 I only buy RAM from here or another place that starts with a "C." Both excellent. Compare prices.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: Under 18 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Awesome! October 2, 2014 Works amazing with my iMac Late 2013! Awesome product would recommend to anyone to buy this product.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chocolatetown, USA Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great value and stable memory August 3, 2014 Arrived in two days after ordering, direction sent were easy to follow and installation is so easy. I ordered my new iMac with just 8 of ram and it ran OK. Once I installed 32 this iMac zooms along so fast. This is a no brainer, buy your memory here and know Macsales stands behind all their products.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: california Owned Product: 3-4 months
Rating: 5/5 Solved my iMac Woes June 18, 2014 Months of intermittent reboots and crashes with my 32gb 27" Late 2013 iMac i7 were solved for good when I replaced the memory I purchased at a well known discount chain with this memory. Highly recommended!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: La Verne, Ca. Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 It's nice when things work.... May 15, 2014 It's nice when things work out the first time !! OWC does all the research and has the right products that work right out of the box ! With the fantastic warranty and reasonable price this memory is the hot ticket !! Great savings over you know who !! Thanks again for the great products and fast service !!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Dallas,TX Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 8 months later March 22, 2014 I did a 32gb upgrade to my new at the time of purchase iMac 27. Here we are 8 months later and memory is flawless and fast! This is quality memory,great product and really good price. My iMac is screaming fast no matter what i throw at it.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Doha, Qatar Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 OWC is the best! May 13, 2013 This is the second time I purchased & upgraded my MAC RAM. This time for my imac 27' Inch late 2012 with 32 GB from OWC. I received the package earlier than expected and has worked really well. I recommend OWC products to Mac owners, they really give the best deals. I will certainly come back for more upgrades in the near future. Lastly, OWC customer service is excellent.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Colorado Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Good Price, Prompt Delivery, Easy Installation February 11, 2013 Title says it all. Great experience so far!

The online video showing installation process provides comfort this is something you can easily do quickly - 5 minutes as the video says.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Charleston, SC Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great Service & products January 31, 2013 This is the 2nd time I've ordered RAM upgrades for my Mac computers - delivered as promised, beautifully packed & protected. Performance excellent

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Thank you OWC December 25, 2012 I ordered this set from South Korea and it arrived earlier than expected. I was worried that It would take longer but it arrived earlier than expected, It is well packed and safe. I can't wait my new iMac to arrive and put it in!

Thank you owc!

I would recommend this item to a friend!

OWC Memory 32.0GB 4 x 8.0GB PC12800 DDR3L Kit Mfr P/N: 1600DDR3S32S OWC SKU: OWC1600DDR3S32S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $239.96Matched Kit for $214.00
Add to CartOther World Computing 1600DDR3S32S In Stock, Click to Buy Now