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Two green DDR5 ECC RDIMM modules with gold contacts

OWC

OWC 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM PowerEdge Kit

SKU CH-GKQW-CGEAZ

A 256 GB DDR5 ECC registered RDIMM kit, two 128 GB modules at 4800 MT/s CL40 1.1 V, validated for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 256GB (2 x 128GB)

  • ECC registered design protects data integrity in Dell PowerEdge servers
  • 256GB kit (2×128GB) expands memory capacity for virtualisation workloads
  • DDR5 4800 CL40 speed delivers high throughput at 1.1V
  • JEDEC and RoHS compliant for warranty-safe server upgrades
  • Validated for PowerEdge C6600, C6620, MX760C, R660 and R6615

Dell PowerEdge Server Memory Kit

This OWC kit supplies 256 GB of DDR5 ECC registered memory in two 128 GB modules. It is built for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers. The modules will not work in standard desktop computers or with unbuffered or load-reduced DIMMs.

Thermals Power and Noise

Each module runs at 1.1 V and carries no heat spreader, relying on the server's directed airflow for cooling. Registered buffering and ECC operation add minimal electrical load, so power draw stays within the platform's standard DIMM slot budget. Acoustic impact is negligible because the memory itself has no moving parts.

Compliance and Warranty Benefits

The kit meets JEDEC and RoHS standards, making it a warranty-safe upgrade that does not void the original system coverage. OWC includes a limited lifetime warranty with free technical support and an advanced replacement programme. These services reduce downtime by providing rapid module exchange if a fault occurs.

Points forts

  • ECC registered design protects data integrity in Dell PowerEdge servers
  • 256GB kit (2×128GB) expands memory capacity for virtualisation workloads
  • DDR5 4800 CL40 speed delivers high throughput at 1.1V
  • JEDEC and RoHS compliant for warranty-safe server upgrades
  • Validated for PowerEdge C6600, C6620, MX760C, R660 and R6615

Caractéristiques

BrandOWC
Part Number4R8D54R4256P
Capacity256GB (2 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge C6600
Dell PowerEdge C6620
Dell PowerEdge MX760C
Dell PowerEdge R660
Dell PowerEdge R6615

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Questions sur cet article

How do I install the 288-pin DDR5 ECC RDIMM modules into a Dell PowerEdge R660, and what step is often missed?

Align the notch on each 128GB module with the slot key, press firmly until both ejector tabs click shut, then verify in BIOS that all 256GB are detected at 4800 MT/s.

What maintenance or replacement will the 4Rx4 registered DIMMs need over time?

No routine maintenance is required; if a module fails, replace the faulty 128GB stick with an identical 4800 CL40 1.1V ECC registered part to keep rank and voltage consistent.

What limit appears first when the kit runs sustained workloads at 4800 MT/s?

The 1.1V operating voltage and CL40 latency set the thermal and timing envelope; exceeding either can trigger throttling or errors before any other constraint.

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