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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

OWC

OWC 128GB (2x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM Dell PowerEdge

SKU CH-Z985-3W87Q

A 128GB DDR5 4800 ECC registered dual-rank kit of two 64GB modules for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • 128GB total capacity from two 64GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered design for data integrity
  • 1V operation reduces power draw
  • Validated for Dell PowerEdge C6600, C6620, MX760C, R660, R6615

Dell PowerEdge server upgrade

This 128GB kit contains two 64GB DDR5 4800 CL40 ECC registered RDIMM modules built for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers. It is designed for IT teams expanding memory capacity in compatible rack and blade platforms. The modules will not work in standard desktop computers or with unbuffered or load-reduced memory types.

Capacity and headroom

Each module delivers 64GB at 4800 MT/s with CL40 latency and 1.1V operation, giving a total of 128GB across two 288-pin DIMMs. The dual-rank 2Rx4 organisation provides density for virtualisation and database workloads, while ECC registered operation maintains data integrity under sustained load. Systems requiring higher frequencies or lower latencies will not benefit from this JEDEC-standard specification.

What the kit changes

The matched pair enables dual-channel population without mixing revision codes, simplifying deployment in validated Dell configurations. JEDEC and RoHS compliance ensures the upgrade keeps existing warranty coverage on supported platforms. Buyers needing heat spreaders, RGB lighting or consumer-grade XMP profiles should select a different product class.

Points forts

  • 128GB total capacity from two 64GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered design for data integrity
  • 1V operation reduces power draw
  • Validated for Dell PowerEdge C6600, C6620, MX760C, R660, R6615

Caractéristiques

BrandOWC
Part Number4R8D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge C6600
Dell PowerEdge C6620
Dell PowerEdge MX760C
Dell PowerEdge R660
Dell PowerEdge R6615

Autres versions de ce modèle

5 de plus dans cette gamme

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Questions sur cet article

Will the 4800 CL40 DDR5 modules run alongside my existing DDR5 ECC RDIMM sticks in the PowerEdge R660?

Yes, provided the installed memory is also DDR5 ECC Registered RDIMM at 4800 MT/s and 1.1 V; mixing with unbuffered or load-reduced modules is not supported.

How can I verify the 2Rx4 64 GB modules are recognised at full speed after installation?

Check the system BIOS or iDRAC memory inventory — it should show 128 GB total, DDR5 4800, CL40, ECC Registered, 2Rx4 organisation on each DIMM.

Does the kit include any heatsinks, cables or installation tools, or must I source them separately?

The kit contains only the two 64 GB 288-pin DDR5 ECC RDIMM modules; no heat spreaders, cables or tools are included.

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