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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 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
Install Videos 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
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: 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! This review is from 128.0GB (4x 32GB) 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade Kit. 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! 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! 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! 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:

Verified Buyer
Reviewer: SouthJerseyJim Location: Toms River, NJ Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Memory upgrade went flawlessly July 3, 2020 I have an iMac 2019 that came with 8 GB memory. Went to OWC site because they have excellent how-to videos so I could see about installing more. When I saw how easy it was to install the chips, I wanted to order 2 but did not think I could afford to.. It happened that memory was on sale that day. Got a pair, they arrived quickly and within minutes I was up and running with 2X the RAM. OWC / Macsales is THE BEST.

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: TrainRider Location: Philadelphia, PA Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 New iMAC...easy adding RAM July 3, 2020 The new iMACs come with 8b standard. I wanted more RAM and found that macsales offers a better price for expanding your RAM rather then buying additional RAM when buying your new computer. It's not difficult at all to add the two 16gb to your iMAC and now I have 40gb of RAM. I feel that this is the way to go.

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: 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.

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 64.0GB 2 x 32GB PC4-21300 DDR4 Kit Mfr P/N: 2666DDR4S64P OWC SKU: OWC2666DDR4S64P OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $599.98Matched Kit for $309.99
Add to CartOther World Computing 2666DDR4S64P In Stock, Click to Buy Now
Additional Capacities & Kits:
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