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Apple DDR4 2933 MHz R-DIMM Overview

Upgrade the RAM in your Mac Pro to maximize performance with the Apple 32GB DDR4 R-DIMM ECC Memory Module Kit. 

The Mac Pro (2019) has a six-channel memory controller that supports 12 slots. All memory that comes included with your Mac Pro will be 2933 MHz, although the 8-core model will be limited to 2666 MHz. It is recommended that you use Apple-approved memory to ensure there are no compatibility issues. 

There are several requirements when it comes to upgrading the RAM in your Mac Pro: 

  • 2933 MHz DDR4 full-length 288-pin DIMM 
  • Error-correcting code (ECC) 
  • Registered (R-DIMM) or Load-Reduced DIMM (LR-DIMM) 

    Note: Do not mix R-DIMMs and LR-DIMMs. Mixing R-DIMMs and LR-DIMMs will result in a memory error flash of the status indicator light when you turn on the Mac Pro.

    • Mac Pro Model Specifications
  • The 8-core model can have a max of 768GB of RAM and runs at 2666 MHz 
  • The 12-core model can have a max of 768GB of RAM and runs at 2933 MHz 
  • The 16-core model can have a max of 768GB of RAM and runs at 2933 MHz 
  • The 24-core model can have a max of 1.5TB of RAM and runs at 2933 MHz 
  • The 28-core model can have a max of 1.5TB of RAM and runs at 2933 MHz
    • R-DIMM or LR-DIMM
  • R-DIMMs are designed for configurations up to 192GB (6 x 32GB) 
  • LR-DIMMs are designed for configurations up to 384GB (6 x 64GB) or more
    • UPC: 190199288942