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Green 288-pin DDR5 RDIMM module, 64GB, no heat spreader

OWC

OWC 64GB DDR5 4800 CL40 2Rx4 1.1V ECC Registered RDIMM server RAM

SKU CH-JCSE-M3M22

64 GB DDR5-4800 ECC registered RDIMM for servers and workstations, CL40 1.1 V 2Rx4 288-pin module

  • Capacity64GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • 64 GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency supports responsive workload execution
  • 1 V operation reduces power draw per module
  • ECC registered design protects data integrity in critical systems

ECC Registered DDR5 for Servers

This 64GB DDR5 4800 CL40 module is built for workstations and servers that require ECC Registered memory. It operates at 1.1V with a 2Rx4 rank configuration across 288 pins. The module is a direct replacement for Samsung M321R8GA0BB0-CQK and will not function in standard desktop computers or alongside unbuffered or load-reduced DIMMs.

Sustained Load Stability

JEDEC-standard compliance and 100% factory testing ensure reliable operation during continuous server workloads. Registered buffering reduces electrical load on the memory controller, helping maintain signal integrity when all slots are populated. ECC corrects single-bit errors in real time, preventing data corruption during extended uptime without the overhead of load-reduced designs.

Upgrade Path and Compatibility

This module replaces or expands DDR5 4800 Registered ECC configurations in compatible OEM platforms. Mixing capacities, speeds or manufacturers is not recommended for optimal performance. Buyers needing unbuffered ECC, non-ECC UDIMMs or load-reduced LRDIMMs should select a different product type, as this RDIMM is electrically incompatible with those standards.

Points forts

  • 64 GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency supports responsive workload execution
  • 1 V operation reduces power draw per module
  • ECC registered design protects data integrity in critical systems

Caractéristiques

BrandOWC
Part Number4R8D52R464GB
Capacity64GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Questions sur cet article

How much power does the 1.1V OWC 64GB DDR5 4800 RDIMM draw when the server runs continuously?

Each module operates at 1.1V JEDEC-standard voltage. Actual power draw depends on your platform’s memory controller and workload; the module itself has no separate power rating.

What must my motherboard provide for this 288-pin DDR5 ECC Registered DIMM to function?

A server or workstation board with DDR5 RDIMM slots, registered-DIMM support, ECC enabled in firmware, and a memory controller qualified for DDR5 4800 2Rx4 modules.

Can I install this 2Rx4 CL40 RDIMM alongside 1Rx4 or 2Rx8 DDR5 ECC Registered modules in the same channel?

JEDEC allows mixed-rank populations, but OWC recommends identical capacity, speed, and manufacturer per channel for optimal stability; consult your platform’s qualified-vendor list.

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