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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 Late 2015)
(October 2015)
Model ID:iMac17,1
3.2GHz i5, 3.3GHz i5, 4.0GHz i7
Detailed specs coming soon

Customer Ratings

Write a Review 5 / 5 35 out of 36 (97%) reviewers would recommend this product
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Verified Buyer
Reviewer: LetsgoOrange Location: Treasure Coast, FL Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Additional memory for my new imac September 8, 2016 Exceptionally easy to install this upgrade to my imac. Much less expensive than ordering from apple. This upgrade worked perfectly at startup after install. I highly recommend this addition for your mac!

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: cardcastleruins Location: los angeles, CA Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Good RAM August 8, 2016 Easy to install works great no complaints. I added this 16GB to my new iMac 5k in addition to the onboard 16GB.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Saweet!!! July 29, 2016 Shipping was several days faster, and I chose free. The ram has worked flawlessly, no funky kernel panics or weird behavior since installing. Very pleased with the product.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Bangkok, Thsliand Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Work great July 1, 2016 The RAM fits and works. What more can you ask for?

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Houston, TX Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 OWC Memory Saves You $ June 17, 2016 I trust OWC to be my sole provider for Mac memory. I max out the RAM on every Mac I buy. Sometimes I have no choice but to buy it from Apple when the Mac I want doesn't allow user upgrades, but otherwise I go to macsales.com. I've bought RAM from OWC for eight (8) Macs and never had a problem. I trust OWC to sell me OEM equivalent RAM at half the price Apple charges.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Kharkov Age: 25-34 Experience Level: IT Professional Owned Product: 3-4 months
Rating: 5/5 Best product and best service June 16, 2016 In a past a have some trouble with shipping...but MacSales quickly solved my problem and sent my order.

RAM works perfectly!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Selangor, Malaysia Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Was looking for a product like this long time ago! June 11, 2016 I was searching every Apple outlets and authorised resellers, and that price is double up on OWC price. Thanks god that I found OWC and solved all my problems for self searching 1 by 1!And they do provide international shipping too!!! Thanks! I definitely will come back again!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Hartford, CT Age: 35-44 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Apple Ram Upgrade May 10, 2016 I updated my ram in my 5k iMac myself and its woking like a charm..No complaints on the durability of the product.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Pasadena, CA Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Bought 2 of the 8 GB 1867MHz DRAM (good move) April 29, 2016 I bought my iMAC27 with only 16GB of memory built in. I felt I could do a little better with the pricing so I held back and ordered 16GB of memory from MacSales.com. The price was very reasonable and I got the performance boost I wanted. Now, my iMAC27 is a full 32GB and behaving like it! Enjoy the iMAC every day knowing the memory additions have enhanced its already considerable performance. The upgrade was very easy and safe to do. I'm very happy with the upgrade.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Oslo, NO Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Fast delivery, excellent quality April 29, 2016 Love the whole concept of your services, which in addition are fast and efficient. Great build quality and more than satisfying performance. The best alternative to Apples expensive offerings. Highly recommended! 10/10

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chicago, IL Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Mac a new iMac 27in even faster? Yup! April 28, 2016 Added more ram and went smooth. Followed the install video and it was as easy as 1-2-3. Fired it up and now its even faster than it was and for way cheaper than adding ram directly from mac. Thanks much! When I go for 64gig I will be back.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: South korea Age: 35-44 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 good product April 25, 2016 Good price and good product

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Fresno, CA Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Works perfect April 23, 2016 Ordered for my late 2015 iMac 5k. Arrived in only 2 days, easy to install and works like a charm. My iMac is blazing fast now. Thanks!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: New Windsor, NY Age: 45-54 Experience Level: IT Professional Owned Product: 3-4 months
Rating: 5/5 Works Great in my 2016 5K iMac April 16, 2016 What can I say, rather than have Apple install the RAM at a much more expensive price I did so myself. It was really easy to do and I now have 24GB of RAM. I chose to leave the two 4GB modules in and upgrade from there. This RAM also give you matching speed to OEM RAM.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Great product April 12, 2016 I am very Happy with OWC RAM

1- Excellent product quality 2- Compatible with my iMAC 3- After upgrading my iMAC ( RAM ), it became much faster! 4- Excellent Shipping

Thank you

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Dayton, OH Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Excellent! April 9, 2016 Great RAM upgrade - I was worried about compatibility, but these worked flawlessly on late 2015 5K iMac.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Los Gatos, CA Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great value as iMac upgrade April 7, 2016 This worked as expected. The late 2015 model iMac makes upgrading memory really easy. A tremendous value vs buying a fully configured Mac from Apple.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Ottawa, ON Age: 18-24 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great Memory, Arrived On Time & Much Cheaper Apple Alternative! March 24, 2016 Highly recommend going with OWC for your Mac memory needs! Purchased a 16GB kit of 1867 DDR3 memory to upgrade my iMac 5K (Late 2015) to 24GB and it's been working great ever since!

One thing to mention is to install the memory AFTER you've completed the first boot and setup of OSX. I had an issue where just a black screen showed up and I thought Apple shipped me a dead machine. After re-installing the OWC memory (after OSX setup), it showed up in system info and my iMac 5K has been working great since!

Would recommend OWC to everyone, shipping is super quick and prices are more than reasonable. Will be a returning customer :)

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Excellent Product! March 14, 2016 Shipping was fast! Additionally, the product is really easy to install. I have used the iMac for a few computation intensive tasks and the memory is very stable.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Good Experience March 12, 2016 The whole experience buying the memory stick is pretty good. And not to say the quality. At Jan OWC is probably one of the only places I can get memory sticks for my late 2015 model iMac 5k, and the memory worked just like a charm when I stuck them into the slots. It has been functioning for almost two month with 24 * 7 up time, and nothing funky had occurred. BTW, they even have a service to collect your old memory sticks, I haven't tried because i ran my old stick with the new ones bought from OWC.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Burlington, Ontario Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great service March 11, 2016 Product arrived quickly. Works great

Verified Buyer
Reviewer: Anonymous Location: San Francisco Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great way to fill up those slots! March 10, 2016 Not much you can say about memory, except it works fine and is very affordable. Able to upgrade my 5K iMac to 24GB for cheap.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: PA Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Perfect Memory!! March 1, 2016 Not only was these memory sticks easy to install...but they are working fantastic and a great savings from buying them directly from Apple.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: South Florida Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 As Tina Turner would say - Simply the best! February 25, 2016 This is the second time that I have purchased RAM from OWC, and frankly I would not dream of buying from anywhere else. Great prices, arrives quickly, wonderful installation tutorials on their website and ease of locating what I need - flawless!

Anyone who does not buy their computer supplies from OWC needs to seriously think of getting some more RAM for their cerebrum.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 works well in 2015 27" iMac (Retina) January 24, 2016 Works well (as expected) in a 2015 27" iMac (Retina)

I would recommend this item to a friend!

OWC Memory 16.0GB 2 x 8.0GB PC3-14900 DDR3 Kit Mfr P/N: 1867DDR3S16P OWC SKU: OWC1867DDR3S16P OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $139.98MacSales.com Price $99.97
Add to CartOther World Computing 1867DDR3S16P In Stock, Click to Buy Now