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Four green DDR4 RDIMM sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4×64GB) DDR4 2933 ECC RDIMM Mac Pro 2019 memory upgrade

SKU CH-RAK3-AKEF0

A 256 GB DDR4-2933 ECC registered kit of four 64 GB modules built for the 2019 Mac Pro

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 256GB kit (4×64GB) expands Mac Pro 2019 memory capacity
  • DDR4 2933 speed (PC4-23400) matches factory specification
  • ECC registered RDIMM detects and corrects data errors
  • 20V operation with CL21 latency for stable performance
  • 288-pin 2Rx4 modules built with major OEM chips

Mac Pro 2019 256GB DDR4 ECC Kit

This 256GB kit contains four 64GB DDR4 2933 ECC RDIMM modules built for the Apple Mac Pro 2019 7,1. Registered 2Rx4 organisation and 1.2V operation match the workstation's memory architecture. The modules install in the user-accessible DIMM slots without tools.

CL21 288-Pin Registered Modules

Each stick runs at PC4-23400 speed with CAS latency 21 and uses major OEM Samsung, Micron or Hynix chips. ECC and registered buffering provide the error correction and signal integrity the Mac Pro platform requires. No heat spreaders are fitted, keeping the low-profile form factor.

Suits Mac Pro 2019 Memory Expansion

The kit suits owners of the 2019 Mac Pro 7,1 who need the full 256GB capacity for virtualisation, rendering or large datasets. Builders using standard desktop motherboards, laptops or non-registered memory platforms should look elsewhere.

How it compares

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

Price $1,550.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.06 per GB
Cheaper than about 65% 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 numberMR23400-924K4
Total capacity256 GB (4 × 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 items256 GB (4 × 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 2933 MT/s actually run at that speed in my Mac Pro 7,1?

The Mac Pro 2019 memory controller operates at 2933 MT/s with supported modules, so these RDIMMs will run at the rated data rate.

What does PC4-23400 mean for bandwidth on this kit?

PC4-23400 is the JEDEC designation for DDR4-2933; the Mac Pro 7,1 uses six memory channels, so total throughput depends on how many slots you populate.

Do these 288-pin RDIMMs fit the Mac Pro 2019 DIMM slots without adapters?

Yes, the 2019 Mac Pro uses standard 288-pin DDR4 RDIMM slots and the modules install directly.

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