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Two green DDR4 LRDIMM sticks with gold contacts and black chips

OWC

OWC 256GB (2x128GB) DDR4 2933 ECC LRDIMM 288-pin 1.2V CL21 4Rx4 HP SimpliVity 325 Gen10

SKU CH-BWKZ-21159

256 GB kit of two 128 GB DDR4 2933 ECC load-reduced DIMMs for HP SimpliVity 325 Gen10 servers

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 256GB (2 x 128GB)

  • ECC load-reduced design protects data integrity in servers
  • 256GB kit (2 × 128GB) expands memory capacity for heavy workloads
  • DDR4 2933 CL21 at 1.2V delivers rated speed with standard voltage
  • 288-pin LRDIMM 4Rx4 matches HP SimpliVity 325 Gen10 slot requirements
  • Backward compatible with 2133, 2400 and 2666MHz systems

System-specific server memory

This OWC kit delivers 256 GB of DDR4 ECC load-reduced DIMM memory in two 128 GB modules. It is built for the HP SimpliVity 325 Gen10 and operates at 2933 MHz with CL21 latency at 1.2 V. The 4Rx4 registered design targets virtualisation hosts and dense compute nodes that require maximum capacity per slot.

288-pin LRDIMM form factor

Each module uses the 288-pin load-reduced interface that reduces electrical load on the server memory bus. No heat spreader is fitted, so airflow in the chassis must handle thermal management. The kit cannot be mixed with unbuffered or standard registered ECC DIMMs, and it will not work in desktop or consumer platforms.

Replaces HP part numbers 19047 and 11040 series

This upgrade supersedes HP part numbers P19047-H21, P19047-K21, P19047-B21, P18455-B21, P11057-1A1, P11057-0A1, P11040-K21, P11040-H21 and P11040-B21. Backward compatibility with 2133, 2400 and 2666 MHz buses allows deployment in earlier DDR4 generations. Buyers who need unbuffered memory or desktop compatibility should look elsewhere.

Highlights

  • ECC load-reduced design protects data integrity in servers
  • 256GB kit (2 × 128GB) expands memory capacity for heavy workloads
  • DDR4 2933 CL21 at 1.2V delivers rated speed with standard voltage
  • 288-pin LRDIMM 4Rx4 matches HP SimpliVity 325 Gen10 slot requirements
  • Backward compatible with 2133, 2400 and 2666MHz systems

Specifications

BrandOWC
Part Number2L9D44R4256P
Capacity256GB (2 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemHP SimpliVity 325 Gen10

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Questions about this item

What does PC4-23400 mean for the DDR4-2933 speed of these modules?

PC4-23400 is the JEDEC designation for DDR4-2933, indicating a peak data rate of 23400 MT/s for each 288-pin LRDIMM.

What physical slot and system clearance do the 288-pin LRDIMMs require?

Each 128GB module uses a standard 288-pin DDR4 DIMM slot; the kit is validated for the HP SimpliVity 325 Gen10 chassis.

How are the two 128GB LRDIMMs installed, and what mixing rule must be followed?

Insert both modules into the correct HP SimpliVity 325 Gen10 DIMM slots; do not mix these 4Rx4 load-reduced ECC DIMMs with unbuffered or registered ECC memory.

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