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Green rectangular DDR4 RDIMM module with black chips, no heat spreader, 288 gold pins, 16GB 2933MHz ECC registered server memory

NEMIX RAM

NEMIX RAM 16GB DDR4 2933 CL21 2Rx8 1.2V ECC RDIMM Dell PowerEdge R640 memory upgrade

SKU CH-W72H-WWNEN

16GB DDR4 2933 ECC registered RDIMM validated for Dell PowerEdge R640 servers

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 16 GB DDR4 2933 MHz adds server capacity
  • CL21 1.20 V keeps power draw low
  • ECC RDIMM 2Rx8 protects data integrity
  • 288-pin registered design fits Dell R640
  • Major OEM chips ensure proven reliability

Dell PowerEdge R640 memory upgrade

This 16 GB DDR4 2933 RDIMM is built for the Dell PowerEdge R640 rack server. It adds registered ECC capacity for workloads that need data integrity and stable operation under load.

Replaces slower or smaller DDR4 RDIMMs

Upgrade from lower-frequency or lower-capacity modules when the server needs more throughput for virtualization or database tasks. The jump is worth it when the platform supports 2933 MT/s and the memory slots accept registered DIMMs.

Check slot count and population rules

Verify the R640 has free 288-pin DDR4 slots and that the planned configuration follows Dell’s channel guidelines. Confirm the system BIOS is current enough to recognize 2Rx8 registered modules at 1.2 V.

How it compares

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

Price $110.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.94 per GB
Cheaper than about 58% 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 numberMR23400-628K1
Total capacity16 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 rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items16 GB (1 × 16 GB) DDR4 2933 MHz PC4-23400 2Rx8 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 288-pin DDR4 RDIMM fit the Dell PowerEdge R640 memory slots?

Yes, the 288-pin DDR4 RDIMM form factor matches the R640 DIMM slots exactly.

Do I need to install modules in matched pairs or specific channels for the 2Rx8 registered ECC memory?

The R640 supports flexible population; single 2Rx8 modules work, but consult the server manual for optimal channel configuration.

How long will the Samsung Micron or Hynix chips on this 1.20V module last under server workloads?

Major OEM DRAM chips rated for 1.20V operation are built for continuous server duty and typically exceed the system lifecycle.

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