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Two green DDR4 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR4 2933MHz ECC RDIMM Mac Pro 2019 memory upgrade

SKU CH-MXDR-5MR1T

A 128 GB DDR4 ECC RDIMM kit running at 2933 MHz with CL21 latency, built for the Apple Mac Pro 2019

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 128 GB total capacity from two 64 GB modules
  • DDR4 2933 MHz speed rated at PC4-23400
  • ECC registered RDIMM protects data integrity
  • 20 V operation with CL21 latency
  • Designed for Apple Mac Pro 2019 7,1

Mac Pro 2019 128GB kit

This NEMIX RAM kit delivers 128GB of DDR4 2933MHz ECC registered memory in two 64GB modules. It is built for the Apple Mac Pro 2019 7,1 workstation. The modules run at 1.2V with CL21 latency and use 288-pin RDIMM form factor. Major OEM chips from Samsung, Micron or Hynix provide server-grade reliability.

Upgrade from smaller or slower DIMMs

The kit replaces the factory memory or lower-capacity RDIMMs to reach the 128GB total. The jump is worth it when workloads such as video editing, 3D rendering or virtualisation exceed the current memory ceiling. Registered ECC operation maintains data integrity under sustained load without requiring a platform change.

Suits Mac Pro 2019 owners needing maximum capacity

This kit suits professionals who need the full 128GB supported by the 2019 Mac Pro architecture. Buyers who want more storage, a different memory speed or non-ECC modules should look at something else because this product is a fixed DDR4 2933MHz registered ECC configuration.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $849.99
Pricier than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.64 per GB
Cheaper than about 60% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineApple Mac Pro Compatible Series Memory
Model nameApple DDR4 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple
In the box
Included items128 GB (2 × 64 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these 288-pin DDR4 RDIMMs fit the memory slots in a Mac Pro 7,1 from 2019?

Yes, the kit is built for the 2019 Mac Pro 7,1 and uses the 288-pin DDR4 RDIMM form factor that the system requires.

What is the correct way to seat the two 64 GB modules so the Mac recognises the full 128 GB?

Power down, open the side panel, align each module's notch with the slot key, press firmly until both latches click, then close the case before booting.

Do the Samsung, Micron or Hynix chips on these modules need any firmware updates or periodic cleaning?

No firmware updates are required for the memory itself; just keep the interior dust-free with occasional compressed-air cleaning.

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