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Eight green circuit boards with black chips and gold contacts

OWC

OWC 256GB (8x32GB) DDR4 2133MHz PC4-17000 CL15 4RX4 ECC LRDIMM 1.2V 288-pin Server RAM

SKU CH-5FH8-F0QQD

Eight 32 GB DDR4 2133 MHz ECC LRDIMM modules provide 256 GB of load-reduced server memory at CL15 and 1.2 V

  • Capacity256GB (8 x 32GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCYes

Capacity 256GB (8 x 32GB)

  • ECC load-reduced design protects data integrity in servers
  • 256GB total capacity across eight 32GB modules
  • DDR4 2133MHz CL15 speed matches PC4-17000 standard
  • 2V operation reduces power draw per module
  • 288-pin LRDIMM form factor fits server and workstation slots

Server-grade capacity and ECC protection

This OWC kit delivers 256GB across eight 32GB DDR4 LRDIMMs running at 2133MHz with CL15 latency. Error-correcting code and load-reduced buffering target servers, workstations and NAS systems that require data integrity and high module density. Standard desktop boards cannot use these modules.

JEDEC compliance and voltage stability

Each module operates at 1.2V and meets PC4-17000 JEDEC specifications for consistent timing across all eight sticks. The 4Rx4 organisation allows the memory controller to address maximum capacity per channel without exceeding electrical load limits. Mixing with unbuffered DIMMs is not supported.

Straightforward 288-pin installation

Modules insert into standard DDR4 288-pin slots and require no additional configuration beyond BIOS recognition of ECC and load-reduced mode. Common issues arise when the platform firmware does not support LRDIMM topology or when fewer than eight slots are populated in a dual-channel layout.

Puntos fuertes

  • ECC load-reduced design protects data integrity in servers
  • 256GB total capacity across eight 32GB modules
  • DDR4 2133MHz CL15 speed matches PC4-17000 standard
  • 2V operation reduces power draw per module
  • 288-pin LRDIMM form factor fits server and workstation slots

Especificaciones

BrandOWC
Part Number2L1D44R4256K
Capacity256GB (8 x 32GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Preguntas sobre este artículo

Will the 288-pin DDR4 2133MHz CL15 modules require any firmware updates or reseating over time?

No firmware updates are required for the DDR4 2133MHz CL15 LRDIMMs; they are designed to JEDEC specs and only need reseating if the server chassis is moved or vibrated heavily.

What limit appears first when the 4Rx4 ECC LRDIMMs run at full 256GB capacity continuously?

The memory controller's maximum supported rank count per channel is typically reached before thermal or bandwidth limits on these 4Rx4 modules.

How much heat and power do the 1.2V 288-pin LRDIMMs produce during all-day server workloads?

Each 32GB module operates at 1.2V; total kit draw stays within standard DDR4 LRDIMM power envelopes and passive cooling in a server airflow is sufficient.

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