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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR4 2933 ECC RDIMM 2Rx4 CL21 1.2V 288-pin Dell PowerEdge R740 memory upgrade

SKU CH-0RMZ-X3MMF

A 64 GB DDR4 2933 ECC registered DIMM with CL21 latency and 1.2 V operation for Dell PowerEdge R740 servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 64 GB capacity supports heavy virtualization workloads
  • DDR4 2933 speed matches Dell PowerEdge R740 specifications
  • ECC registered design protects data integrity in servers
  • 2 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits standard server slots

64 GB DDR4 2933 ECC RDIMM for Dell PowerEdge R740

This single 64 GB registered DIMM uses DDR4 2933 memory with ECC and a 2Rx4 organisation. It is built for the Dell PowerEdge R740 rack server and similar enterprise systems that require registered error-correcting modules. The 1.2 V operating voltage matches standard DDR4 server specifications.

Sustained load behaviour with CL21 registered timing

The module runs at PC4-23400 speed with a CAS latency of 21 cycles. Registered buffering reduces electrical load on the memory controller, helping stability during continuous workloads such as virtualisation, database hosting or large-scale analytics. Major OEM chips from Samsung, Micron or Hynix are screened under stress to maintain data integrity over long periods.

Verify slot count and population rules before

Confirm the R740 has free 288-pin DDR4 RDIMM slots and check the server’s memory population guide for rank and capacity limits per channel. The 2Rx4 dual-rank design may affect maximum supported modules per processor. Ensure the BIOS is current to recognise the full 64 GB capacity.

How it compares

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

Price $388.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.08 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 lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR4 2933 MHz RDIMM Registered Server Memory
Part numberMR23400-924K1
Total capacity64 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 systemsDell
In the box
Included items64 GB (1 × 64 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.2 V DDR4 2933 module draw when the Dell PowerEdge R740 runs continuously?

The registered ECC DIMM operates at 1.2 V, so power draw stays at the standard DDR4 level for a 64 GB 2Rx4 module under sustained server workloads.

What server component must already be present for this RDIMM to function?

A Dell PowerEdge R740 with an available 288-pin DDR4 RDIMM slot and a processor that supports registered ECC memory.

Will this 2Rx4 CL21 stick work alongside older 1Rx4 or 2Rx8 modules already installed in the R740?

Mixing ranks is supported by the R740 memory controller, but population rules require matching speed and voltage; the system will clock all modules to the lowest common timing.

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