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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
Mac mini 2018
Mac mini (Late 2018)
(November, 2018)
Model ID: Macmini8,1
3.6GHz i3, 3.0GHz i5, 3.2GHz i7
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 3 out of 3 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: VinceCheong Location: Kuala Lumpur, Malaysia Age: 25-34 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 I did not believe at first! March 20, 2020 Like the title says, I couldn't believe at first that my 2019 5K i9 iMac could handle more than 64GB of ram, according to Apple's support website. After biting the bullet, I took the jump and bought myself this 128GB Kit. Installed it into my Mac, and lo-and-behold, it recognises all 4 RAM modules! It doesn't just only recognises them, it also make full use of all the modules! I've yet to reach the Max capacity of 128GB RAM usage, but I've clearly almost reached 90% of the allocation between a LOT of Chrome tabs on, running FCPx with 1080p timeline, and Logic Pro with many many multiple tracks on at the same time!

I would recommend this item to a friend! This review is from 128.0GB (4x 32GB) 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: DJWeb Location: Ludwigshafen Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 My iMac runs like he.. February 24, 2020 Didn´t believe the article saying iMac could carry 128gb memory. Now I have the prove: it runs like he... And we germans are very sceptic ;-) (my first buy with owc, NO other relations, true!)

I would recommend this item to a friend! This review is from 128.0GB (4x 32GB) 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: GrantY Location: Savannah, GA Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Works perfectly February 3, 2020 Works well. No issues. Far less expensive than buying Mac mini memory from Apple. Couldn't be happier.

This review is from 64.0GB (2x 32GB) 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: AppleSavy2012 Location: Pinehurst, NC Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great RAM memory products January 10, 2020 This is my 2nd or 3rd purchased with OWC. My merchandise arrived one day earlier and in good condition by US Postal Service. My expectations with OWC is very good! Great prices, customers service and many good products to choose. Thank you.

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: Fale809 Location: Stafford, VA Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 16 GB upgrade December 1, 2019 Upgraded my iMac 19,1 and huge difference, I kept the original 8 plus the new 16GB. I don’t edit movies or anything like that. I just surf the web and the office apps and watch some movies. The multitasking is greatly improved. Super easy to install too.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: mpbnc Location: Winston-Salem, NC Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Installed today & happy November 23, 2019 My ram upgrade arrived before my new system, so I had to wait a while to install it. At this point I can only say that the installation went as smoothly as depicted in the OWC video. Of course, I am thrilled that I was able to get 4 times the memory (32GB) for a little less than the cost of the manufacturer’s 8GB upgrade. Yesterday my system reported 8GB and today it shows 40GB! Yep, very happy!

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:

Verified Buyer
Reviewer: Soundsearcher Location: Canada
Rating: 5/5 Exceptional Service November 16, 2019 Great service and product. Item was delivered quickly.

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:

Verified Buyer Top 50 Contributor
Reviewer: GregS Location: Vero Beach Florida Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Perfect November 8, 2019 I never turned on my new iMac before installing the 64G of OWC ram. Worked perfectly as expected.

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: 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 16.0GB 16GB PC4-21300 DDR4 Mfr P/N: 2666DDR4S16G OWC SKU: OWC2666DDR4S16G OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $99.95OWC Price $72.88
Add to CartOther World Computing 2666DDR4S16G In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 8GB
    • Ships: Same Day
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    • OWC Price $39.99
  • 16GB (2x8GB)
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  • 16GB
  • 32GB (2x16GB)
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    • After Instant Rebates
  • 32GB
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