Home » Memory

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.
Note: For 27-inch iMac (2020) models — iMac20,1 and iMac 20,2 — OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.
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 Mid 2020)
(August 2020)
Model ID: iMac20,1; iMac20,2
3.1GHz i5, 3.3GHz i5, 3.8GHz i7, 3.6GHz i9
Detailed specs coming soon
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 3 out of 3 (100%) reviewers would recommend this product
1 2
Verified Buyer
Reviewer: bkcc
Rating: 5/5 WFM no problems for a full year October 4, 2020 I would recommend this item to a friend! 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
Reviewer: Luigino Location: Kearny, NJ Age: 55-65 Experience Level: IT Professional Owned Product: 3-4 months
Rating: 5/5 Thumbs up! September 15, 2020 Exactly what I needed to upgrade the memory in my new mac mini. Saved over $600 by purchasing memory from OWC and installing myself as opposed to purchasing preinstalled. And the video for installing the memory was very easy to follow and a lifesaver. Great job OWC!

I would recommend this item to a friend! 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
Reviewer: timdoyo Location: New York City Age: 25-34 Experience Level: Home User Owned Product: 3-4 months
Rating: 5/5 Great! September 9, 2020 Bumped my 8GB iMac up to 40GB. So easy to install.

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: NewMac Location: Lynnwood, WA Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great Product! September 6, 2020 As advertised, this was a great price and very easy to install in my 2019 27” iMac. The OWC video was helpful, with clear steps to take. The installation took me less than 10 minutes. Highly recommend!

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: GLCSD Location: San Diego, California Age: Over 65 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Easy MAC performance upgrade September 1, 2020 Apple commands a hefty price tag for internal memory chips. The OWC versions work well with no issues that I can discover and are very easy to install, no tools necessary. I'd recommend buying the most memory you can afford and maxing out the memory chip capacity of your MAC. The performance gains are noticeable. From start up through application operations.

I would recommend this item to a friend! 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
Reviewer: Macmini32 Location: Singapore Age: 35-44 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Excellent ram upgrade for Mac mini August 31, 2020 OWC is amazing. I ordered this along with the Mac mini 2018 torx screwdriver kit on a Friday night in Singapore. They packed and shipped it out on Friday afternoon in the US. DHL then shipped it over the weekend and my package arrived at my doorstep on Monday afternoon. Really fast and responsive. Great pricing too. My Mac mini is now running with 32gb of ram.

Thank you OWC!

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: Bakatono Location: Japan Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 32GB for new 27' iMac August 30, 2020 My RAM arrived quickly. I am happy with the service.

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: carlB
Rating: 5/5 Tim Cook is greedy August 29, 2020 You can still put economic memory in a 27 inch iMac. Save a lot of money over Apple price.

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: megamania Location: Ankeny, IA Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Excellent RAM for 2019 iMac August 28, 2020 I upgraded my 2019 iMac with 32GB of OWC RAM. I've had it installed for about a month and a half and I can say this RAM is solid and performance has improved significantly. The various graphic design software I use now runs much smoother. Over the years I have used OWC RAM in iMacs at work and they have always been reliable!

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: Kandalf63 Location: Italy Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Upgrade iMac 27" 2019 August 26, 2020 Ho acquistato 32Gb 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin per fare l'upgrade della memoria del mio Mac. l'installazione è semplice e il Mac le riconosce immediatamente. Sono molto soddisfatto dell'esperienza di acquisto, sia per quanto riguarda la qualità della memoria, eccellente, sia per i tempi e la facilità di acquisto. La spedizione è arrivata in un mese circa, nessuna spesa aggiuntiva di sdoganamento. Consiglio le memorie OWC.

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: JTinTexas Location: Pittsburg, TX Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 128MB Memory for 2020 iMac August 26, 2020 Went from OEM 8MB memory to OWC 128MB memory in less than a minute. Simple, quick, and works! Amazing performance out my new iMac!

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

Verified Buyer
Reviewer: SammyJay Location: New Zealand Age: 55-65 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Fast shipping August 25, 2020 Really impressed with the speedy shipping here to New Zealand during this covid threat, I,ve always bought Ram from OWC cause it always works and the installation video's are really cool

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: kvanderw Location: Oklahoma City, OK Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Solid and Reliable - as always! August 17, 2020 Whenever I need memory to expand my Apple products, this is the place I go.

The Mac Mini is a standard for us and the savings in upgrading memory myself, along with the reliability of these chips make my life so much simpler.

Thank you OWC!!!!!

I would recommend this item to a friend! 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
Reviewer: degapop Location: Cape Town Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 128Gb RAM August 14, 2020 My 2019 iMac is now running so smoothly. Thank you OWC!

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

Verified Buyer
Reviewer: Simeon Location: Pasadena, CA Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Don't Be Scared to Save $600 August 14, 2020 I intentionally bought my Mini with less RAM than I needed because of the huge price difference between pre-installed RAM from Apple, and this kit. Still, I have thick finger and aging eyes, and I was worried about breaking something. I watched the installation video a couple of times, laid out my work. area, and did it. The only trick part was getting that little button connector on the AirPort antenna to line up right. The installation took me about half an hour, and everything runs as good or better (because 4x the RAM) than nit did before.

I would recommend this item to a friend! 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
Reviewer: tarduin
Rating: 5/5 quality, easy to install August 4, 2020 OWC has always had good merchandise and help with upgrades. I found the RAM upgrade (newest Mac mini) relatively easy compared RAM upgrades for the last generation. Without the videos on here and install kit, it wouldn't be possible.

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: Jeop86 Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Saved $$$$ July 31, 2020 Purchasing this product saved me hundreds of dollars on a Mac Mini. The easy to follow installation video and guides helped me install the memory without a problem. Took the Mini from 8gb to 32gb.

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: MorphPro Location: Toronto, ON Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Very happy! July 11, 2020 With the help of their videos it took me 45 mins to install the new ram. I was slightly daunted about putting it back together when I was pulling it apart but it wasn't difficult at all. Video tutorial was incredibly thorough and helpful. Ram showed up upon boot up no issue. Always loved OWC and here's another reason.

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: skl19 Location: Texas
Rating: 5/5 Good product July 9, 2020 Good product-fast shipping-great price!

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

Verified Buyer
Reviewer: DogHairs Location: NY Owned Product: 1-3 months
Rating: 5/5 Memory kit works great in 2019 iMac 27" July 6, 2020 The memory kit upgrade install (extremely easy) and performance has been flawless. Shipping was on time, and packaging was top notch. Equally as important, OWC had this kit in stock when no one else did. The OWC website is highly informative. I will be shopping here again. Thanks OWC

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: Holland Location: El Cajon, California Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Another New Mac Mini Upgraded July 5, 2020 Once again OWC saved me hundreds on memory for a new Mac Mini. Beginning with my first Power PC Mini almost fifteen years ago, the late 2012 i7, and now my new 2020 6 core i7, I've always looked to OWC for upgrading the DRAM. I saved over $650 by ordering the Mini with the minimum 8Gb of DRAM, then upgrading to the full 64Gb from OWC! Not the easiest machine to upgrade memory on, but definitely worth the effort. And of course the new memory works flawlessly, making an already lightning fast machine even faster. Couldn't be happier. (Use OWC toolkit OWCTOOLKITMM18)

I would recommend this item to a friend! 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
Reviewer: brazzini Location: Red Wing Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Perfect! July 4, 2020 Works great! This site makes it very easy to find what you need!

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

Verified Buyer
Reviewer: MacMan36 Location: WI Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Maximum RAM, maximum performance July 4, 2020 I got this kit to max out the RAM in my new Mac Mini and all I can say is that it was well worth it. I run a lot of memory intensive applications and my setup is so smooth and responsive for anything I throw at it. Don't hesitate to get his kit for your Mac Mini, you'll be so glad you did.

I would recommend this item to a friend! 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
Reviewer: MikeMacuser Location: TEXAS Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Excellent upgrade July 4, 2020 This memory increased the speed of my Mac mini tremendously while running multiple applications. Great product.

I would recommend this item to a friend! 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
Reviewer: sagebrushbob Location: CA Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Slick! No problems July 4, 2020 I've ordered upgrades for 2 of my iMacs. Both orders arrived on time and were easily installed. Functionality is perfect!

This review is from 64.0GB (4x 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 $598.99
Add to CartOther World Computing 2666DR4S128S In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 8GB
    • Ships: Same Day
    • Only $74.99
    • OWC Price $36.99
  • 16GB
    • Ships: Same Day
    • Only $99.95
    • OWC Price $69.88
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $149.98
    • Matched Kit for $71.99
  • 32GB (2x16GB)
    • Ships: Same Day
    • Only $199.90
    • Matched Kit for $134.99
  • 32GB
    • Ships: Same Day
    • Only $299.99
    • OWC Price $158.99
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $299.96
    • Matched Kit for $141.99
  • 64GB (2x32GB)
    • Ships: Same Day
    • Only $599.98
    • Matched Kit for $307.99
  • 64GB (4x16GB)
    • Ships: Same Day
    • Only $399.80
    • Matched Kit for $268.99
  • 96GB (2x32GB+2x16GB)
    • Ships: Same Day
    • Only $449.99
    • Matched Kit for $449.99
  • 128GB (4x32GB)