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128.0GB OWC Memory Upgrade Kit for iMac Pro (2017 - Current)

Memory Image
Product Specs:
Professional Installation Required!
The iMac Pro DOES NOT feature a memory door on the back allowing for easy upgrades. Upgrading the iMac Pro's memory requires dismantling the computer to gain access to the memory slots. This is a highly complex process that requires a skilled technician.
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.
  1. macOS 10.14.3 Mojave or later must be installed before installing any kits utilizing 64GB memory modules.
  2. Apple iMac Pro can use either RDIMM or LRDIMM, but they cannot be combined. The system will not function with a mixed configuration. For maximum performance, population of all 4 DIMM slots is recommended.


  • (2) 64GB 2666MHZ DDR4 LRDIMM PC4-21300
  • (1) 27" iMac Adhesive tape set for proper display resealing
Note: This memory kit is intended for Apple iMac Pro or PC desktops and servers which use 2666MHz DDR4 Load-Reduced (LRDIMM) modules. Memory provided in this kit is is NOT compatible with Apple iMac.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
iMac Intel
iMac Pro
(27-inch Late 2017)
(December 2017)
Model ID: iMacPro1,1
3.2GHz 8-core, 3.0GHz 10-core, 2.3GHz 14-core, 2.5GHz 18-core
Install Videos coming soon


iMac Pro Memory Installation Video

OWC 128.0GB (2 x 64GB) 2666MHz PC4-21300 DDR4 LRDIMM Memory Upgrade Kit Mfr P/N: DID2627DP128 OWC SKU: OWCDID2627DP128 For iMac Pro (2017 - Current). Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty Ships: Same Day Only $1,408.98OWC Price $1,179.00
Add to CartOther World Computing DID2627DP128 In Stock, Click to Buy Now
Additional Capacities & Kits: 2666MHz DDR4 LRDIMM
  • 128GB (2x64)
  • 256GB (4x64)
    • Ships: Same Day
    • Only $2,768.96
    • Bundle Priced for $2,279.00
  • 64GB (4x16)
    • Ships: Same Day
    • Only $849.00
    • Bundle Priced for $679.00
  • 128GB (4x32)
    • Ships: Same Day
    • Only $1,649.00
    • Bundle Priced for $999.00