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Eight green DDR5 RDIMM modules in a row

OWC

OWC 512GB (8x64GB) DDR5 4800 CL40 2Rx4 288-pin 1.1V ECC Registered RDIMM memory upgrade

SKU CH-DWXQ-9Z6RQ

Eight 64 GB DDR5 4800 CL40 ECC registered RDIMMs totalling 512 GB for the PowerEdge R760xd2

  • Capacity512GB (8 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 512GB (8 x 64GB)

  • 512 GB total capacity from eight 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for Dell PowerEdge R760xd2 and replaces part AC239379

OWC 512GB DDR5 ECC Registered Kit

This kit delivers 512GB of DDR5 4800 memory across eight 64GB registered DIMMs. It is built for Dell PowerEdge R760xd2 servers and workstations that require ECC error correction and registered signal buffering. The modules operate at 1.1V with CL40 latency and conform to the PC5-38400 standard. They will not function in standard desktop computers or alongside unbuffered or load-reduced memory types.

Sustained Load Behaviour

Registered ECC modules maintain data integrity during continuous server workloads such as virtualisation, database hosting and large-scale file serving. The on-board register reduces electrical load on the memory controller, allowing all eight DIMMs to run stably at the rated 4800 speed under prolonged utilisation. Error-correcting code detects and corrects single-bit errors in real time, preventing silent data corruption during extended operations.

Pre-Installation Checklist

Verify that your system is a Dell PowerEdge R760xd2 and that the motherboard supports 288-pin DDR5 registered DIMMs with 2Rx4 organisation. Confirm the server currently uses registered ECC memory; mixing with unbuffered or load-reduced modules is not supported. Ensure all eight memory slots designated for this configuration are available and that the BIOS is updated to recognise the full 512GB capacity.

Points forts

  • 512 GB total capacity from eight 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for Dell PowerEdge R760xd2 and replaces part AC239379

Caractéristiques

BrandOWC
Part Number4R8D52R4512K
Capacity512GB (8 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemPowerEdge R760xd2

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Questions sur cet article

How much power do the 1.1V DDR5 4800 CL40 registered DIMMs draw when the server runs continuously?

Each 64 GB module operates at 1.1 V, the standard DDR5 voltage, keeping power draw low during all-day workloads.

What must the system already support for this 512 GB kit to function?

The motherboard must accept 288-pin DDR5 ECC registered RDIMMs and the CPU memory controller must handle 2Rx4 64 GB density at 4800 MT/s.

Can these 2Rx4 DDR5 4800 registered DIMMs be mixed with existing load-reduced ECC modules in the same server?

No — the manufacturer states they cannot be mixed with ECC load-reduced or unbuffered memory.

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