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Four green DDR5 RDIMM modules with gold contacts and black chips

OWC

OWC 512GB (4x128GB) DDR5 4800 CL40 4Rx4 ECC Registered RDIMM memory upgrade kit PowerEdge R760xa R860 R960

SKU CH-WH3Z-5JRWP

Four 128 GB DDR5 4800 CL40 ECC registered RDIMMs totalling 512 GB for PowerEdge R760xa, R860 and R960 servers

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 512GB (4 x 128GB)

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  • 512GB total capacity from four 128GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC Registered design detects and corrects data errors
  • 1V operation reduces server power draw
  • Validated for PowerEdge R760xa, R860 and R960

Server-grade DDR5 ECC RDIMM kit

This 512 GB kit contains four 128 GB DDR5 4800 CL40 registered ECC modules built for Dell PowerEdge R760xa, R860 and R960 servers. The 288-pin RDIMM form factor and 1.1 V operation meet JEDEC PC5-38400 specifications for enterprise workloads.

Four matched modules simplify population

Supplying four identical 128 GB sticks lets administrators fill a full channel set in one step, avoiding mixed-rank or mixed-capacity configurations that can limit memory bandwidth or prevent boot. The kit replaces Dell part AC449974 SNPMMWR9C/128G directly.

Registered ECC design demands compatible platforms

These 4Rx4 registered DIMMs will not work in standard desktop motherboards and cannot be mixed with unbuffered or load-reduced ECC memory. The lack of heat spreaders keeps the profile low for dense server chassis, while 1.1 V operation reduces power draw per module.

Puntos fuertes

  • 512GB total capacity from four 128GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC Registered design detects and corrects data errors
  • 1V operation reduces server power draw
  • Validated for PowerEdge R760xa, R860 and R960

Especificaciones

BrandOWC
Part Number4R8D54R4512S
Capacity512GB (4 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemPowerEdge R760xa
PowerEdge R860
PowerEdge R960

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Preguntas sobre este artículo

Will the four 128 GB DDR5 modules need any firmware updates or battery replacements during their service life?

The 288-pin RDIMMs operate at 1.1 V and carry JEDEC-compliant SPD data; no firmware updates or onboard batteries are required, so the kit runs maintenance-free once seated in the R760xa, R860 or R960 memory slots.

What limit appears first when the 512 GB kit runs at DDR5 4800 CL40 continuously in a PowerEdge R960?

Sustained throughput is capped by the 38400 MB/s PC5-38400 interface and CL40 latency; thermal throttling is unlikely because each 128 GB 4Rx4 module runs at the standard 1.1 V without a heat spreader.

How much heat and power do the four registered ECC DIMMs generate when the server runs all day?

At 1.1 V the 4Rx4 RDIMMs draw minimal power and produce low heat; with no heat spreaders they rely on the chassis airflow of the R760xa, R860 or R960, keeping acoustics and thermals at baseline levels.

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