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

OWC

OWC 128GB (2x64GB) DDR5 5200 CL42 2Rx4 ECC Registered RDIMM server RAM

SKU CH-X3YD-E8DDM

A 128GB dual-channel DDR5 5200 ECC registered RDIMM kit for servers and workstations

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5200 (PC5 41600)
  • CAS LatencyCL42
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

Voir les 4 autres configurations

Rank 2Rx4

  • ECC registered design protects data integrity in critical workloads
  • 128 GB dual-channel kit (2 × 64 GB) scales memory capacity for demanding applications
  • DDR5 5200 MT/s speed delivers high throughput for server tasks
  • JEDEC-standard 1.1 V operation ensures broad platform compatibility
  • 2Rx4 registered DIMM architecture supports dense memory configurations

Server-grade capacity for workstations and NAS

This OWC kit delivers 128 GB of DDR5 memory in a dual-channel pair of 64 GB registered DIMMs. It is built for workstations, NAS systems and servers that require ECC error correction and registered signalling. Standard desktop platforms cannot use these modules and they must not be mixed with unbuffered or load-reduced memory.

Low-voltage operation at stock speed

Each module runs at the JEDEC-standard 1.1 V with a rated speed of DDR5-5200 and CL42 latency. The registered buffer adds a clock cycle of command delay but reduces electrical load on the memory controller, helping stability in densely populated slots. No heat spreaders are fitted, so airflow across the PCB handles thermal dissipation.

288-pin RDIMM form factor for registered platforms

The 288-pin DDR5 RDIMM layout fits only motherboards wired for registered ECC memory. Builders must verify that their platform supports 2Rx4 organisation and the PC5-41600 data rate before installation. The kit frees two DIMM slots for the full 128 GB capacity while leaving remaining channels available for further expansion.

Points forts

  • ECC registered design protects data integrity in critical workloads
  • 128 GB dual-channel kit (2 × 64 GB) scales memory capacity for demanding applications
  • DDR5 5200 MT/s speed delivers high throughput for server tasks
  • JEDEC-standard 1.1 V operation ensures broad platform compatibility
  • 2Rx4 registered DIMM architecture supports dense memory configurations

Caractéristiques

BrandOWC
Part Number5R2D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5200 (PC5 41600)
CAS LatencyCL42
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions sur cet article

How do I install the 288-pin DDR5 RDIMMs in a server motherboard, and what step is often missed?

Align the notch on each 288-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that both 64 GB modules are recognised at 5200 MT/s; the step often missed is seating the second module in the correct channel for dual-channel operation.

What maintenance or replacement will the ECC registered RDIMMs need over time?

No scheduled maintenance is required; the modules run at 1.1 V with no heat spreader, so keep chassis airflow clean and replace only if a memory test reports uncorrectable errors.

What limit appears first under sustained load with these CL42 5200 MT/s modules?

The CAS latency of 42 cycles at 5200 MT/s sets the baseline response time; under sustained throughput the memory controller's maximum bandwidth ceiling is reached before thermal limits become a factor.

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