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OWC Special Offer Available

$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
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 Early 2019)
(March 2019)
Model ID: iMac19,1
3.0GHz i5, 3.1GHz i5, 3.7GHz i5, 3.6GHz i9
PC Laptop
PC Laptops
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: BigDaddyMac Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Another great OWC upgrade! May 8, 2019 Bought the 64GB (4X16GB) kit to max out the memory in my new iMac19,1 which came out in March. Definitely noticed a difference when editing large files as the 8GB (2X4GB) it came standard with was slowing the computer down. This is the best 2019 iMac you can buy off the shelf at the Apple Store. It is HALF the cost Apple would charge for the memory alone!

Unfortunately, I chose the 2TB Fusion drive as I had no choice. While it is still reasonably fast with 128GB of SSD built in, startups and load times lag compared to a iMac 18,3 with the Apple 512GB SSD option.

Can't wait for OWC to release a DIY SSD upgrade kit for the iMac 19X models! I will buy one as soon as they do.

I would recommend this item to a friend! This review is from 64.0GB (4x 16GB) 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: Jagformac Location: Fremont, CA Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Memory upgrade for my mac mini 2018, on time and working November 24, 2018 I ordered 32 GB for my new Mac mini 2018, chose Sat delivery as I wanted it fast. It came on time, was the right product. Took me 30 minutes to install and my mac mini is up and running, could not be more pleased.

BTW I had earlier bought the same config from another seller and it did not work. After spending a frustrating 3 hours a few nights back with multiple install attempts I decided to check out OWC.

Will be going with OWC for mac updates in the future.

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

OWC Memory 128.0GB 4 x 32GB PC4-21300 DDR4 Kit Mfr P/N: 2666DR4S128S OWC SKU: OWC2666DR4S128S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day only $778.99
Add to CartOther World Computing 2666DR4S128S In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 8GB
    • Ships: Same Day
    • Only $74.99
    • OWC Price $49.88
  • 16GB
    • Ships: Same Day
    • Only $149.99
    • OWC Price $98.99
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $149.98
    • Matched Kit for $98.99
  • 32GB (2x16GB)
    • Ships: Same Day
    • Only $299.98
    • Matched Kit for $192.88
  • 32GB
    • Ships: Same Day
    • Only $319.99
    • OWC Price $208.99
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $299.96
    • Matched Kit for $197.88
  • 64GB (2x32GB)
    • Ships: Same Day
    • Only $639.98
    • Matched Kit for $394.88
  • 64GB (4x16GB)
    • Ships: Same Day
    • Only $599.96
    • Matched Kit for $384.88
  • 96GB (2x32GB+2x16GB)
    • Ships: Same Day
    • Only $594.88
    • Matched Kit for $594.88
  • 128GB (4x32GB)