Name: 64.0GB (4x 16GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit
SKU: OWC1867DDR3S64S
Price: 679.99 USD
Availability: InStock
Rating: 5.00 (79 reviews)

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64.0GB OWC Memory Upgrade Kit

4 x 16GB 1867MHZ DDR3 SO-DIMM PC3-14900

OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee

Product Specs:

Technology: DDR3 SO-DIMM
Density: 4 x 16GB (16384MB)
RoHS: Yes
Pin Count: 204-pin
Op. Temp.: 0C to +85C
Data Rate: DDR3-1867
Speed: PC3-14900
CL: 11
Cycle Time: 1.875ns
Voltage: 1.35V
ECC: Non ECC
Module Ranks: Dual Rank
Register: Non Parity
Low Noise 8-Layer PCB
Meets and/or Exceeds Apple/Intel Specifications
Fully Compliant with JEDEC specifications
RoHS Certified
Free Installation Videos & Manuals
Warranty Safe Upgrade.
OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
Why do I need more RAM?

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 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 5 / 5 72 out of 79 (91%) reviewers would recommend this product

1 2 3 4 5 6 7

Verified Buyer

Reviewer: Cash

Rating: 5/5 Works like a charm! July 2, 2019 Shipping was on time. Installation was easy. Works flawlessly.

I would recommend this item to a friend! This review is from 16.0GB 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Module. Customer Videos:

Verified Buyer Top 250 Contributor

Reviewer: Revolution Location: Hershey, PA Age: 25-34 Experience Level: Gamer Owned Product: less than a month

Rating: 5/5 64GB Ram March 21, 2019 This product works great. Applications run more smoothly.

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

Verified Buyer

Reviewer: Spikit Location: Gatineau, Quebec, Canada Age: 55-65 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 Excellent product! November 30, 2018 I ordered this memory upgrade from Canada and received it in a timely manner, and most importantly, it worked as soon as it was installed in my iMac, unlike other RAM I bought from another seller...

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Billl Age: Over 65 Experience Level: Power User

Rating: 5/5 Memory Upgrade to iMac October 15, 2018 The memory upgrade was received, installed, as seems to be working flawlessly. My only comment was the process needed to determine if I needed to order 16gb or 32gb of memory. I already had 16gb and, in the past, it was recommended that all memory be identical. I was advised that adding 16gb would be fine and it did, in fact, work, it just took awhile for the tech to arrive at the recommendation. Thanks again for the support.

This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Spam76 Location: Austin, TX Age: 35-44 Experience Level: Power User Owned Product: 1-3 months

Rating: 5/5 Has made a world of difference September 19, 2018 Before my memory upgrade, running Logic Pro was problematic, as it would not be able to handle every command. Now it's seamless. A great upgrade for a great price. Easy to install, and ready to go!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: GilbertAZMusician Location: Gilbert AZ Age: 35-44 Experience Level: Home User

Rating: 5/5 Perfect fit. Great price. September 3, 2018 Everything work flawlessly and was easy to install. It arrived promptly. I would definitely recommend OWC @ Macsales. Great price too.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: WallE

Rating: 5/5 Love this site July 11, 2018 Great service and fast shipping. They make upgrading your electronics a breeze.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Nassim Location: Algeria , Blida Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months

Rating: 5/5 My iMAC became faster! June 11, 2018 I received the product in short period and it work perfectly without any issues. Thanks MacSales.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: will02 Location: Maryland Age: 55-65 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 iMac RAM June 6, 2018 I added 32GB RAM to my iMac for a total of 48GB. Easy to install, works seamlessly and makes batch processing of photos MUCH faster. I kept the original 16GB RAM that came with the system and the additional RAM is totally compatible.

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: DeanC Location: Perth, Australia Experience Level: IT Professional Owned Product: 1-3 months

Rating: 5/5 Speedy RAM for my iMac May 13, 2018 I recently adding and saw an immediate improvement on application opening and audio processing. My Maschine & Studio One software have a marked improvement in processing time. I would highly recommend this RAM if you using audio, photo or video applications. This is my second set of RAM from OWC and the quality is what I expect. Excellent product.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: BoricuaMD Location: Cadillac Mi Age: 55-65 Experience Level: Power User Owned Product: over 6 months

Rating: 5/5 Flawless April 7, 2018 I bought a 32.0GB (4x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Shipping was very fast and free. The kit came in a well protected package with protection seal. Installing the kit was a piece of cake. Your videos help me a lot. They are very useful, short and to the point. Excellent job.

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Joem Location: Florida Age: 55-65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Outstanding! April 2, 2018 Works as advertised! Just what to expect from the Mac Pro's

I would recommend this item to a friend! This review is from 8.0GB 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Module. Customer Videos:

Verified Buyer

Reviewer: DudaMedrado Location: Stockholm Age: 35-44 Experience Level: IT Professional

Rating: 5/5 Really fast delivery! March 19, 2018 Really Fast delivery and product in perfect conditions! Also the information and help guides videos MacSales has are amazing!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Hairy Location: Dubai Age: 45-54 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 Great service. No Problems. March 11, 2018 I have used OWC before to purchase RAM and this time was just as good. Items were delivered to me in Dubai in the expected time with no problems.

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Double Age: 35-44 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 works March 5, 2018 The product is a little pricey but it works

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: MajesticUser Location: Conway, AR Age: Over 65 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 The memory sticks did the job. February 11, 2018 I bought additional memory sticks for my Apple iMac and received them promptly and I installed them without difficulty. My memory was increased from 8 gig to 16 gig and this action has increased the speed of my computer.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer Top 50 Contributor

Reviewer: krazikofiman Location: Ocala, FL Age: Over 65 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 More Memory better than more money February 10, 2018 Did I have any qualms buying from OWC... no! My G4, MacBookPro and 2011 iMac (from OWC) are testament to my trust in MacSales. So my hesitation on popping the memory in wasn't because I didn't understand the procedure it was I had such a mess that a bit of logistics was needed before the oh-so-simple transformation. From pressing the memory door release, seating the memory and restoring the memory door, I'd say all of one minute passed. I know I am slow. but I wanted to enjoy the doubling of memory up to 32 GB. Everything plugged back in and I hit the power button. Wait for it, wait for it... Well that's good, the home screen is up and now let's see what About This Mac says.... 32GB 1867 MHz DDR3. Now, how about the Memory... all memory slots are currently in use. Okay so how about in Utilities>Activity Monitor>Memory? Physical Memory. 32.00 GB.

Now I open some programs and hey they pop up rather quickly, "like bro, you talkin' to me?" It's like a shot of coffee, chocolate and keys to an AC Cobra.

I am a happy camper!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: deano66 Location: Kent, UK

Rating: 5/5 Easy Upgrade December 11, 2017 Sourced sensibly priced RAM upgrade from MacSales to send over to UK. Tracked item all the way in line with great customer service. Took all of 5 minutes to install. Job done!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Carin Location: Poland Age: 35-44 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 I thought iMac cannot be faster... December 6, 2017 it took almost one month to receive a package after order but was worth to wait. iMac easily recognized additional 16GB (now I have 24) and I have impression that is really faster now. It's mostly visible when running several tasks in parallel such us Lightroom, iMovie and Youtube. Playing full screen 4k video really makes a difference...

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: GTurner Location: Clemson, SC Age: 45-54 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 Super Quick, Perfect Transaction October 30, 2017 I'm so glad I found your company... The manufacturer wanted to charge me WAYYY more for the same memory modules. They were delivered quickly and I had no problem installing them. Now my iMac works as it should! It's ridiculous that they even sell them with less memory than they need. I'm very happy about my upgrade and satisfied with my purchase. I would recommend anyone with a stock iMac go ahead and order new memory modules. They are necessary to get the most use and enjoyment out of the computer. Thanks!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: NewMacGuy Location: Evanston, IL Age: 35-44 Experience Level: Home User Owned Product: 5-6 months

Rating: 5/5 Nice option October 2, 2017 I ordered my iMac with 8gbs of RAM and then upgraded to 64 through Other World Computing. I have had no issues and the computer runs very quickly could not be happier.

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Chips Location: Pennsylvania Age: Over 65 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 Worked fine. September 25, 2017 Good price. The chips arrived quickly and well packaged. The iMac makde the installation easy and fast. Then you.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Macanudo Location: El Paso, TX Age: Over 65 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 Quick & Easy August 31, 2017 My new Memory Upgrade Kit was received promptly. The video instructions were crystal clear and installation was a breeze. It was just what I needed to solve some speed problems.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: Omare Location: Guatemala Age: 35-44 Experience Level: IT Professional Owned Product: less than a month

Rating: 5/5 One of my best online purchasing experiences. August 5, 2017 I´m so satisfied with the excelent service and ease of purchase of the.website. I was able to pay through Amazon without any problem at all.

Shipping was fast and delivered on time.

My memory upgrade took 5 minutes to install and get up and running. I added the 32GB to the already 8GB installed for a total of 40GB. My system is running amazingly fast and smooth, even though Im running a public beta version of High Sierra OS.

Totally happy that I found MacSales. Will definitely become a customer from now on! Thanx!!

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

Verified Buyer

Reviewer: RodN Location: Montreal Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 Great Service August 5, 2017 As usual, I got exactly what I ordered and in good time. The install video took me through the memory upgrade and all worked like a charm.

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) 1867MHz DDR3 SO-DIMM PC3-14900 SO-DIMM 204 Pin CL11 Memory Upgrade Kit. Customer Videos:

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OWC Memory 64.0GB 4 x 16.0GB PC3-14900 DDR3 Kit Mfr P/N: 1867DDR3S64S OWC SKU: OWC1867DDR3S64S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day

Reviews (79)

only $679.99

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