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Green printed circuit board with black memory chips and gold edge connectors

OWC

OWC 128GB DDR4 2933 PC4-23400 CL21 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM HP Workstation Z8 G4

SKU CH-VZA9-SKYGA

A single 128GB DDR4 2933MHz ECC load-reduced DIMM for HP Z8 G4 workstations

  • Capacity128GB
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 128GB

  • 128 GB single module expands workstation memory capacity
  • DDR4 2933 MHz CL21 delivers high-speed data throughput
  • ECC load-reduced design protects data integrity under load
  • 2 V operation reduces power draw and heat
  • Backward compatible with 2133, 2400 and 2666 MHz systems

128GB DDR4 ECC LRDIMM for Z8 G4

This OWC module provides 128GB of DDR4 2933 memory in a single 288-pin load-reduced DIMM. It operates at 1.2V with CL21 latency and includes ECC error correction. The part is validated for the HP Workstation Z8 G4 and replaces several HP part numbers including P19047-H21 and P11040-B21.

Who this suits and who should look elsewhere

This memory suits administrators upgrading an HP Z8 G4 workstation or server that requires load-reduced ECC DIMMs. It will not work in standard desktop computers and cannot be mixed with unbuffered or registered ECC modules. Buyers needing non-ECC memory or standard UDIMMs for consumer platforms should look elsewhere.

PC4-23400 speed with backward compatibility

The module runs at DDR4 2933 (PC4-23400) and is backward compatible with 2133MHz, 2400MHz and 2666MHz system bus speeds. This single specification determines whether the DIMM matches the memory controller configuration of the target workstation.

Highlights

  • 128 GB single module expands workstation memory capacity
  • DDR4 2933 MHz CL21 delivers high-speed data throughput
  • ECC load-reduced design protects data integrity under load
  • 2 V operation reduces power draw and heat
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Specifications

BrandOWC
Part Number2L9D44R4128G
Capacity128GB
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemHP Workstation Z8 G4

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I confirm the 128GB DDR4 2933 module is running at CL21 on my HP Z8 G4?

Enter the system BIOS after installation and verify the reported speed shows 2933 MHz with CL21 timings; the module will downclock to 2666, 2400 or 2133 MHz if the platform requires it.

Does the single 128GB 288-pin LRDIMM ship with any cables, brackets or tools?

No, the upgrade consists of only the 128GB DDR4 2933 PC4-23400 CL21 4Rx4 1.2V ECC Load Reduced DIMM; no extra hardware is included.

Should I choose the 128GB 4Rx4 LRDIMM or a lower-capacity registered ECC module for my Z8 G4?

Select this 128GB LRDIMM when the workstation requires load-reduced memory; it cannot be mixed with registered or unbuffered ECC modules.

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