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Two green 288-pin DDR4 LRDIMM modules with black chips, no heat spreaders

OWC

OWC 256GB (2x128GB) DDR4 2933 PC4-23400 CL21 8Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

SKU CH-0TZG-2WNJB

A 256 GB kit of two 128 GB DDR4 2933 ECC load-reduced DIMMs for Dell PowerEdge FC640, M640, MX740c, MX840c and R640 servers

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 256GB (2 x 128GB)

  • 256GB total capacity from two 128GB modules
  • DDR4 2933MHz speed with CL21 latency for responsive server performance
  • ECC load-reduced design protects data integrity in critical workloads
  • Compatible with Dell PowerEdge FC640, M640, MX740c, MX840c and R640
  • JEDEC and RoHS compliant for warranty-safe upgrade confidence

Server memory upgrade kit

This OWC kit provides 256GB of DDR4 2933 ECC load-reduced memory in two 128GB modules. It is built for Dell PowerEdge FC640, M640, MX740c, MX840c and R640 servers that require registered LRDIMM technology. The modules run at 1.2V with CL21 latency and conform to JEDEC PC4-23400 specifications.

Not for desktop or mixed memory builds

This memory will not work in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or standard ECC registered DIMMs, so buyers needing those formats must choose a different product. It suits administrators expanding compatible Dell PowerEdge platforms only.

256GB total capacity with speed headroom

The 256GB total capacity supports large virtualisation workloads, in-memory databases and heavy multitasking on the listed servers. Each 128GB module is an 8Rx4 LRDIMM that reduces electrical load on the memory bus. The kit also runs at 2133, 2400 and 2666MHz when installed in systems limited to those speeds.

Puntos fuertes

  • 256GB total capacity from two 128GB modules
  • DDR4 2933MHz speed with CL21 latency for responsive server performance
  • ECC load-reduced design protects data integrity in critical workloads
  • Compatible with Dell PowerEdge FC640, M640, MX740c, MX840c and R640
  • JEDEC and RoHS compliant for warranty-safe upgrade confidence

Especificaciones

BrandOWC
Part Number2L9D48R4256P
Capacity256GB (2 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank8Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge FC640
Dell PowerEdge M640
Dell PowerEdge MX740c
Dell PowerEdge MX840c
Dell PowerEdge R640

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Preguntas sobre este artículo

Which Dell PowerEdge servers must I already own for this 256GB kit to work?

The kit is validated for Dell PowerEdge FC640, M640, MX740c, MX840c and R640 systems.

How will these 2933MHz LRDIMMs behave if my server currently runs 2400MHz modules?

The modules are backward compatible with 2133MHz, 2400MHz and 2666MHz speeds, so they will downclock to match the existing memory bus.

How can I verify the 2x128GB ECC Load Reduced DIMMs are operating correctly after installation?

Check the server BIOS or management console to confirm 256GB total capacity, DDR4 2933 speed, CL21 timings, 1.2V voltage and ECC Load Reduced mode are reported.

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