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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.
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 $949.99
Add to CartOther World Computing 2666DR4S128S In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 8GB
    • Ships: Same Day
    • Only $74.99
    • OWC Price $54.99
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $149.98
    • Matched Kit for $107.99
  • 16GB
    • Ships: Same Day
    • Only $149.99
    • OWC Price $109.99
  • 32GB (2x16GB)
    • Ships: Same Day
    • Only $299.98
    • Matched Kit for $212.99
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $299.96
    • Matched Kit for $209.99
  • 32GB
    • Ships: Same Day
    • Only $319.99
    • OWC Price $249.99
  • 64GB (4x16GB)
    • Ships: Same Day
    • Only $599.96
    • Matched Kit for $419.99
  • 64GB (2x32GB)
    • Ships: Same Day
    • Only $639.98
    • Matched Kit for $479.99
  • 128GB (4x32GB)
  • 96GB (2x32GB+2x16GB)
    • Ships: Same Day
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    • Matched Kit for $679.99