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Eight green DDR4 LRDIMM modules with gold contacts and black chips, no heat spreaders

OWC

OWC 1TB (8x128GB) DDR4 2933 CL21 4Rx4 LRDIMM for HP Synergy 480/660 Gen10

SKU CH-JY0S-Y7R70

Eight 128 GB DDR4 2933 CL21 ECC load-reduced DIMMs totalling 1 TB for HP Synergy 480 Gen10 and 660 Gen10 servers

  • Capacity1TB (8 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 1TB (8 x 128GB)

  • 1TB total capacity for large server workloads
  • 8 modules × 128GB DDR4 2933 CL21
  • ECC Load Reduced for data integrity
  • 2V operation reduces power draw
  • Compatible with HP Synergy 480 Gen10 and 660 Gen10

1TB DDR4 LRDIMM Kit for HP Synergy

This kit provides 1TB of DDR4 memory across eight 128GB load-reduced DIMMs. It is built for HP Synergy 480 Gen10 and 660 Gen10 servers. The modules use 288-pin ECC LRDIMM form factor with 4Rx4 organisation. They are not compatible with standard desktops or unbuffered and registered ECC memory.

Sustained Load Behaviour

Load-reduced architecture reduces electrical load on the memory bus, allowing all eight modules to run at the rated 2933 MT/s without signal degradation. ECC corrects single-bit errors in real time, maintaining data integrity during continuous server workloads. The 1.2V operating voltage keeps power draw stable across extended duty cycles.

DDR4 Interface Limits

The DDR4 standard tops out at 2933 MT/s for this module class, so bandwidth cannot exceed the PC4-23400 ceiling. The kit will downclock to 2666, 2400 or 2133 MT/s if the platform requires it, but cannot run faster than the rated speed. Total capacity is fixed at 1TB with the eight supplied modules.

Points forts

  • 1TB total capacity for large server workloads
  • 8 modules × 128GB DDR4 2933 CL21
  • ECC Load Reduced for data integrity
  • 2V operation reduces power draw
  • Compatible with HP Synergy 480 Gen10 and 660 Gen10

Caractéristiques

BrandOWC
Part Number2L9D44R41TBK
Capacity1TB (8 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemHP Synergy 480 Gen10
HP Synergy 660 Gen10

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Questions sur cet article

How much power does each 128GB LRDIMM draw at 1.2V during continuous server operation?

Each module operates at 1.2V DDR4 voltage, which is the standard for PC4-23400 2933MHz LRDIMMs; total kit power scales with all eight modules installed.

Which HP Synergy compute modules must the buyer already have to install this 1TB kit?

This kit is validated for HP Synergy 480 Gen10 and 660 Gen10 compute modules; it replaces HP part numbers P19047-H21, P19047-K21, P19047-B21, P18455-B21, P11057-1A1, P11057-0A1, P11040-K21, P11040-H21 and P11040-B21.

Will these 4Rx4 CL21 LRDIMMs run at 2933MHz alongside existing 2133MHz or 2400MHz DDR4 modules in the same Synergy server?

The modules are backward compatible with 2133MHz, 2400MHz and 2666MHz speeds; the memory controller will clock all populated slots to the lowest common speed.

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