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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 64GB DDR4 2933MHz ECC Registered RDIMM 2Rx4 CL21 1.2V 288pin Dell PowerEdge FC640 M640 MX740c MX840c R450

SKU CH-D71T-HVNSW

64GB DDR4 2933MHz ECC Registered RDIMM module for Dell PowerEdge FC640, M640, MX740c, MX840c and R450 servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB capacity supports large server workloads
  • DDR4 2933MHz speed with CL21 latency for responsive operation
  • ECC registered design protects data integrity in critical systems
  • 2V voltage reduces power draw in dense configurations
  • Validated for Dell PowerEdge FC640 M640 MX740c MX840c R450

Dell PowerEdge Server Memory

This 64GB DDR4 ECC Registered RDIMM is built for Dell PowerEdge FC640, M640, MX740c, MX840c and R450 servers. It delivers 2933MHz speed with CL21 latency at 1.2V for stable enterprise workloads.

Verify Registered ECC Support

Your system must accept DDR4 Registered ECC RDIMMs and cannot mix them with unbuffered modules. Confirm the motherboard supports 2Rx4 rank configuration and 288-pin form factor before ordering.

288-Pin RDIMM Build Quality

The module uses a standard 288-pin registered design without a heat spreader, relying on server chassis airflow for cooling. JEDEC and RoHS compliance ensures broad compatibility and safe installation in supported Dell platforms.

How it compares

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

Price $352.99
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 $5.52 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell PowerEdge FC640
Dell PowerEdge M640
Dell PowerEdge MX740c
Dell PowerEdge MX840c
Dell PowerEdge R450

Other versions of this model

5 more in the same range

Questions about this item

Does the 64GB module ship alone or with extra parts such as a heat spreader?

The module is a single 64GB 288-pin DDR4 ECC Registered RDIMM without a heat spreader; no additional components are included.

Should I choose the 2933MHz CL21 version or a lower-speed alternative for my Dell PowerEdge R450?

The 2933MHz CL21 module is validated for the R450 and will also run at 2666MHz, 2400MHz or 2133MHz if the system requires a slower speed.

What does the 2933MHz PC4-23400 rating mean once the RDIMM is installed in a PowerEdge FC640?

The memory will operate at up to 2933MHz with CL21 latency at 1.2V, delivering ECC registered performance for the FC640 platform.

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