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Green printed circuit board with black memory chips and gold edge contacts

OWC

OWC 128GB DDR4 2933 CL21 8Rx4 288-pin 1.2V ECC RDIMM 2R9D48R4128G

SKU CH-KKDE-WMAYX

A 128GB DDR4 2933 ECC registered DIMM for Dell PowerEdge T640, R740xd, R840, R940 and R940xa servers

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS Latency21
  • Voltage1.2V
  • ECCYes
  • 128GB single-module capacity expands server memory efficiently
  • DDR4 2933MHz speed with CL21 latency delivers responsive performance
  • ECC registered technology ensures data integrity for critical workloads
  • 2V operation reduces power consumption in dense configurations
  • Compatible with Dell PowerEdge T640, R740xd, R840, R940, R940xa servers

Server Memory Upgrade

This 128GB DDR4 2933 MT/s ECC registered DIMM is built for Dell PowerEdge servers including the T640, R740xd, R840, R940 and R940xa. It delivers a single-module capacity increase for workloads that demand maximum memory density per slot. The module operates at 1.2V with a CL21 latency and conforms to JEDEC PC4-23400 specifications.

Fitment Guidance

The part suits administrators expanding compatible PowerEdge platforms where the memory controller supports 8Rx4 registered ECC modules. It will not work in standard desktop mainboards, consumer workstations or systems that require unbuffered or load-reduced DIMMs. Mixing this registered module with other ECC types is not supported by the platform memory architecture.

Deciding Specification

The 8Rx4 rank organisation is the critical parameter; the server memory controller must explicitly support this rank structure for the module to initialise. Verify the platform documentation for 8Rx4 registered DIMM qualification before purchase.

Høydepunkter

  • 128GB single-module capacity expands server memory efficiently
  • DDR4 2933MHz speed with CL21 latency delivers responsive performance
  • ECC registered technology ensures data integrity for critical workloads
  • 2V operation reduces power consumption in dense configurations
  • Compatible with Dell PowerEdge T640, R740xd, R840, R940, R940xa servers

Spesifikasjoner

BrandOWC
Part Number2R9D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS Latency21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge T640
Dell PowerEdge R740xd
Dell PowerEdge R840
Dell PowerEdge R940
Dell PowerEdge R940xa

Spørsmål om denne varen

Will the 288-pin DDR4 RDIMM fit the memory slots on my Dell PowerEdge R740xd?

Yes, the module uses the standard 288-pin DDR4 RDIMM form factor required by the PowerEdge R740xd, R840, R940 and T640.

Do I need to install this 128GB ECC registered DIMM in matched pairs or specific channels?

Install the DIMM in the slot sequence shown in the server service manual; the common mistake is placing a single 8Rx4 module in a channel that the BIOS expects to be populated in pairs.

When should I expect to replace this 1.2V DDR4 2933 module in a 24/7 server?

ECC registered DDR4 modules typically run for the server's service life; plan replacement only if SMART health monitoring reports correctable error counts rising above threshold.

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