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Green rectangular circuit board with gold contacts and black memory chips along one side

OWC

OWC 128GB DDR4 2666MHz PC4-21300 CL19 4RX4 ECC LRDIMM 1.2V 288-pin server RAM

SKU CH-AVYP-7PAZY

High-capacity 128GB DDR4 ECC LRDIMM running at 2666MHz with CL19 latency for servers and workstations

  • Capacity128GB
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 128GB

  • High-density 128GB capacity in a single module
  • ECC load-reduced design protects data integrity in servers
  • JEDEC-compliant DDR4 2666MHz CL19 at 1.2V
  • Backward compatible with 2133MHz and 2400MHz systems
  • 288-pin LRDIMM form factor for server and workstation slots

128GB DDR4 2666MHz ECC LRDIMM

This single 128GB DDR4 2666MHz PC4-21300 CL19 4Rx4 ECC Load Reduced LRDIMM operates at 1.2V and fits 288-pin server slots. It is built for workstations, servers and NAS systems that require registered ECC memory and will not work in standard desktop computers. The module is JEDEC and RoHS compliant.

Thermals noise and power

Running at 1.2V, the module draws minimal power and produces little heat without a heat spreader. Load-reduced buffering reduces electrical load on the memory controller, helping to keep system thermals and acoustic levels low during sustained server workloads. No active cooling is required on the DIMM itself.

Upgrade path and value

The DIMM replaces lower-capacity DDR4 LRDIMM modules and is backward compatible with 2133MHz and 2400MHz bus speeds. The jump is worth it when a server or workstation needs maximum memory density per slot for virtualisation, large databases or in-memory analytics and the platform supports 4Rx4 load-reduced ECC memory.

Points forts

  • High-density 128GB capacity in a single module
  • ECC load-reduced design protects data integrity in servers
  • JEDEC-compliant DDR4 2666MHz CL19 at 1.2V
  • Backward compatible with 2133MHz and 2400MHz systems
  • 288-pin LRDIMM form factor for server and workstation slots

Caractéristiques

BrandOWC
Part Number2L6D44R4128G
Capacity128GB
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo

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Questions sur cet article

How do I install the 288-pin DDR4 2666MHz LRDIMM and what step do people often miss?

Align the notch on the 288-pin module with the slot key, press firmly until both side clips click, and verify the server BIOS recognises the full 128GB at 2666MHz — the step most often missed is confirming the memory mode supports Load Reduced DIMMs.

What maintenance or replacement will the 128GB ECC LRDIMM need over its service life?

The module has no moving parts or heat spreader; maintenance is limited to keeping the server air filters clean so the 1.2V DRAM stays within thermal limits, and replacement is only required if a correctable ECC error count rises above the platform threshold.

What limit appears first when the 4Rx4 LRDIMM runs sustained workloads at 2666MHz?

The memory controller’s maximum supported rank count per channel is typically reached before bandwidth or thermal limits, so population rules for 4Rx4 modules dictate the practical capacity ceiling.

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