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Two green DDR5 server DIMMs, 288-pin, no heat spreaders

OWC

OWC 256GB (2x128GB) DDR5 5600 CL46 4Rx4 ECC Registered RDIMM server RAM

SKU CH-YCAA-K2BRZ

A 256 GB dual-channel DDR5 kit with ECC registered RDIMMs running at 5600 MT/s and CL46 latency

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS LatencyCL46
  • Voltage1.1V
  • ECCYes

Capacity 256GB (2 x 128GB)

Nog 4 configuraties tonen

Rank 4Rx4

  • ECC registered design protects data integrity in critical workloads
  • 256 GB total capacity across two 128 GB modules supports large datasets
  • DDR5 5600 speed with CL46 latency delivers high throughput
  • 1 V operation reduces power draw for dense server configs
  • JEDEC and RoHS compliant for broad workstation and server compatibility

Server DDR5 ECC Registered Kit

This 256GB dual-channel kit contains two 128GB DDR5 5600 CL46 modules built to the JEDEC PC5-44800 standard. They are 288-pin ECC Registered RDIMMs designed for select workstations, servers, NAS systems and network switches. The kit will not fit standard desktop computers. Each module runs at 1.1V and uses a 4Rx4 organisation.

ECC Registered Architecture

The registered buffer and on-die ECC provide error correction and signal integrity required by multi-socket server platforms. Mixing these modules with unbuffered or load-reduced DIMMs is not supported. The dual-channel kit simplifies population of matched pairs in compatible memory controllers. No heat spreader is included, so airflow must meet the platform specification.

256GB Capacity Headroom

The 256GB total capacity supports large in-memory databases, virtualisation clusters and high-thread-count compute workloads. Workloads that exceed this limit will require additional memory slots or higher-density modules not included in this kit. Systems limited to lower maximum memory per channel cannot use the full 128GB per module.

Pluspunten

  • ECC registered design protects data integrity in critical workloads
  • 256 GB total capacity across two 128 GB modules supports large datasets
  • DDR5 5600 speed with CL46 latency delivers high throughput
  • 1 V operation reduces power draw for dense server configs
  • JEDEC and RoHS compliant for broad workstation and server compatibility

Specificaties

BrandOWC
Part Number5R6D54R4256P
Capacity256GB (2 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS LatencyCL46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Will the 4Rx4 registered DIMMs need any firmware updates or periodic reseating?

No firmware updates or reseating are required for the 4Rx4 registered modules; they operate as standard JEDEC DDR5 parts.

What limits sustained throughput on this 5600 CL46 kit?

The CL46 latency at DDR5 5600 sets the primary ceiling for sustained bandwidth.

How much heat and power do two 128 GB modules draw at 1.1 V all day?

Each module runs at 1.1 V without a heat spreader; total power scales with the 256 GB capacity under load.

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