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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

Customer Ratings

Write a Review 5 / 5 27 out of 27 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: Martinez Location: Atlanta, GA Age: 35-44 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great item, Great price November 20, 2016 I am extremely happy with my purchase of 32gb ram for my Imac 2015 27 inch. Was delivered quickly, great packaging and product works great.

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

Verified Buyer
Reviewer: redbeard
Rating: 5/5 It's A No Brainer November 14, 2016 What is there to dislike about 32GB of RAM? I purchased this since I work in a graphic arts field where Photoshop, Illustrator, Lightroom and even After Effects can be open all at once. 32GB can easily cover that with the compatible iMac.

Hard to speak about quality and Durability of the product – BUT once installed, I have never had a problem with any OWC RAM!!

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

Verified Buyer
Reviewer: MacPaint Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Memory kit still working well October 12, 2016 I purchased this kit about a year ago so that I could allocate large RAM caches to the Adobe applications that I use.

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

Verified Buyer
Reviewer: MagicDragon Location: Grapevine, Texas Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 These memory modules are perfect for my iMac October 6, 2016 I upgraded my iMac from 16 to 32 gigs of memory. I had 4 4 gig modules and needed to remove them and replace with 4 8 gig modules. I purchased these and received them quickly. I was able to install them on my iMac in about 5 minutes and they were recognized by the iMac upon my reboot and have been running flawlessly since. Having twice as much memory has caused all apps to run faster on my iMac as they can load more code in memory. I would recommend these memory modules to anyone wanting to increase the memory size of their iMac.

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

Verified Buyer
Reviewer: FLWRDK Location: Dublin, CA Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Love these memory cards! September 22, 2016 I upgraded my iMac from 8 GB to 32 GB and now speed through with multiple programs open. Easy to install with easy instructions. Worked as advertised!

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

Verified Buyer
Reviewer: DukeOBass Location: Central Pennsylvania Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great so far! September 9, 2016 I purchased a new 5K 27" 4.0 Ghz i7 iMac with 8 GB of Ram in early August. After placing my order for the iMac, I ordered the 4- 8 GB 32GB Ram Kit to load it up when I received the machine. The Ram came about a week before I received the iMac by UPS.

The Ram installation video was helpful and easy to follow. The installation process was very easy and the Mac is running great! This Ram is the exact 1867Mhz spec that Apple uses. While researching, I saw other Ram that only came up to 1866Mhz and lower. It was also a lesser price, but there were also some poor vendor reviews to accompany the lower price on the Ram.

My son has purchased from Other World Computing multiple times in the past and highly recommended them when I talked with him. This was my first experience with Other World and I am impressed!

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

Verified Buyer
Reviewer: Egay Location: Manila, Philippines Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Perfect September 4, 2016 Fits and works perfectly as intended.

I'd get another set for my MacMini

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

Verified Buyer
Reviewer: AndyV Location: Boston, MA Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Excellent product - major instructional video error! September 1, 2016 I'm glad I was prompted by OWC to write a review as it had slipped my mind. The replacement memory card products are uniformly excellent and easily fit the slots in my iMac. The big problem I had, until I figured it out, was the instructional video on OWC's site shows the installation backwards from what actually needs to happen. /The video shows the label facing g you while , in fact, to be properly installed, the labels should face in the OPPOSITE direction. Please fix this?! Otherwise, an excellent value for the money and well supported.

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

Response from MacSales.com, Marketing September 1, 2016 The video does state clearly to line up the notch in the memory module with the pin in the memory slot regardless of which side of the memory has the labeling.
Verified Buyer
Reviewer: Tackes Age: 55-65 Owned Product: 1-3 months
Rating: 5/5 Great price August 25, 2016 I bought a new iMac from Apple with the minimum RAM (32 Gb preinstalled would have been an extra $600). I purchased the 32 Gb from MacSales for under $200 and saved myself $400. The install was easy and took under a minute.

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

Verified Buyer
Reviewer: Kanadai Location: Winnipeg Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Perfect August 20, 2016 Quality product, arrived fast and was packed secure. Value for the returned RAM was credited back on my card. Very pleased with the transactions and shipment. Highly recommended company.

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

Verified Buyer
Reviewer: Palomojlm Location: Buenos Aires, Argentina Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Excellent product, excellent customer service August 8, 2016 I would recommend this item to a friend! Customer Videos:
Verified Buyer
Reviewer: Anonymous Location: Minneapolis, MN Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Worked like a charm! July 12, 2016 Upgraded my 5k late 2016 iMac w these-- it was much easier than I thought it would be. iMac recognized the new hardware correctly and instantly. No complications.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Austin, TX Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great RAM at a great price. July 5, 2016 The RAM works, was delivered on time, price was a ton lower than getting it from Apple, what more could you ask for.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Great Buy May 24, 2016 I purchased this memory for my new iMac and I am totally happy with the purchase process and the product, and the price. Shipping to Canada was free and it arrived within 2 weeks. It has performed flawlessly since I installed it.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Singapore Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Stable RAM May 24, 2016 I ordered this 32.0GB OWC Memory Upgrade Kit, 4 x 8GB 1867MHZ DDR3 SO-DIMM PC3-14900

https://eshop.macsales.com/item/Other%20World%20Computing/1867DDR3S32S/

Ordered on late afternoon on Friday 20 May 2016, item arrived via DHL on Monday 23 May 2016 morning. Good solid packing.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Sacramento, CA Age: 25-34 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Great, every time. April 18, 2016 OWC always comes through. Great quality, speedy delivery. Wouldn't go anywhere else for Mac memory upgrades.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chicago Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Awesome! March 29, 2016 I purchased a new 27" iMac with retina display but only got the 8GB of RAM version since Apple charges so much for the additional memory. The ordering was painless and my new memory modules showed up on time. Installation took less that 10 minutes. I notice a huge difference when I am running multiple application at the same time, especially when running photoshop since it is a memory hog. I would definitely recommend OWC and their upgrade kits.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Boston, MA Age: 25-34 Experience Level: Power User Owned Product: 5-6 months
Rating: 5/5 iMac Memory Purchase March 23, 2016 OWC was very easy to work with and they have great customer service.I appreciate their support and their products are great!

- Dan

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Davis, CA Age: 55-65 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Works great March 19, 2016 Installed on my new 27 " iMac (5K). Works flawlessly, easy to install, and a lot more cost effective than getting all this memory from Apple.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Lexington, KY Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Total satisfaction! March 2, 2016 I am satisfied with both the product and services from MacSales. The product arrived on time and with no problems. After reviewing the video provided on the MacSales sight, I was able to install the ram: which took just a few minutes. I have upgraded from the original 8Gbs of ram to 32Gbs. This gives me the ability to have more instruments open in my recording workstation at one time without any dropout. Dream come true!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Costa Mesa, CA Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Fast & Easy March 1, 2016 Great product at a great price and it was delivered quickly. Love it!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Its memory, it works February 20, 2016 Easy to install in my new 27" Retina iMac. It works as expected.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: New York, NY Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Amazing Product + Service! February 12, 2016 product was shipped on time and installation was easy with the help of OWC's videos. No issues with my new iMac 27" retina, now it runs like a charm

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Ashland, OR Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great Price and Performance! February 4, 2016 As I spec'd out my build-to-order (BTO) iMac w/5K retina display, I balked at the $600 Apple premium for 32 GB of DDR3 RAM. I knew I could find a better deal on compatible memory at OWC! And that I did - and saved $400! It installed easily, performs flawlessly and I even got a rebate for the 8GB stock RAM I traded in!

As always, I HIGHLY recommend OWC for all your aftermarket Apple needs!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Los Angeles Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Deep thoughts with Jack handy... January 28, 2016 I think this product is swell, thank you for listening.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Japan Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 No problems in the late 2015 5K iMac December 13, 2015 I've long purchase my Mac RAM from OWC, and I must admit that I have never had a single problem with their RAM, ever. Prices are very reasonable, even for the cost of international shipping. I installed this 32GB RAM purchase in my new iMac 17,1. The RAM upgrade was simple, and made even simpler by OWC videos. The machine blazes with this RAM. No errors or trouble whatsoever. Highly recommended.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Battle Ground, WA Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Good price, good product December 6, 2015 It made my new iMac a 32GB machine for far less money than what Apple was charging.

I would recommend this item to a friend!

OWC Memory 32.0GB 4 x 8.0GB PC3-14900 DDR3 Kit Mfr P/N: 1867DDR3S32S MacSales.com SKU: OWC1867DDR3S32S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $279.96CyberSaver $214.85
Add to CartOther World Computing 1867DDR3S32S In Stock, Click to Buy Now