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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. This memory kit is intended for Apple iMac Pro and can only be combined with 2400MHz DDR4 RDIMMs. OWC also offers 2666MHz DDR4 RDIMM or LRDIMM memory kits for iMac Pro.
  3. 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 2400MHZ DDR4 RDIMM PC4-19200
  • (1) 27" iMac Adhesive tape set for proper display resealing
Note: This memory kit is intended for Apple iMac Pro and can only be combined with 2400MHz DDR4 RDIMMs. 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
OWC Memory 128.0GB 2 x 64GB PC4-19200 DDR4 Kit Mfr P/N: DID2427DP128 OWC SKU: OWCDID2427DP128 OWC Memory Upgrade Kit Lifetime OWC Limited Warranty
Sold Out
Additional Capacities & Kits: 2666MHz DDR4 LRDIMM
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