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Four green 288-pin DDR4 LRDIMM sticks in static bags

OWC

OWC 128GB (4x32GB) DDR4 2133MHz CL15 4Rx4 ECC LRDIMM 1.2V 288-pin Server RAM

SKU CH-6RD9-KBN7T

A 128GB DDR4 ECC LRDIMM kit of four 32GB modules running at 2133MHz CL15 for servers and workstations

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • ECC load-reduced design protects data integrity in critical workloads
  • 128GB quad-channel kit scales memory capacity for virtualisation
  • 2133MHz DDR4 speed matches server platform specifications
  • 2V operation reduces power draw per module
  • 288-pin LRDIMM form factor fits compatible server and workstation slots

Server-grade DDR4 ECC LRDIMM kit

This OWC kit supplies 128GB of DDR4 memory across four 32GB load-reduced DIMMs. It is built for servers, workstations and NAS systems that require ECC error correction and registered signalling. The modules run at 2133MHz with a CL15 latency and 1.2V operation. Standard desktop computers cannot use this memory type.

288-pin LRDIMM form factor

Each module uses the 288-pin DDR4 LRDIMM layout with 4Rx4 organisation, reducing electrical load on the memory controller in multi-DIMM configurations. No heat spreaders are fitted, so airflow in the chassis must be adequate for sustained operation. The kit is validated to JEDEC PC4-17000 specifications and RoHS compliant for warranty-safe deployment.

Verify platform supports DDR4 ECC LRDIMM

Before ordering, confirm the motherboard or system accepts DDR4 load-reduced ECC DIMMs and cannot mix them with unbuffered modules. Check that the memory controller supports 4Rx4 ranks at 2133MHz and that the BIOS recognises the full 128GB capacity across four slots. Buyers needing unbuffered or non-ECC memory should select a different product.

Highlights

  • ECC load-reduced design protects data integrity in critical workloads
  • 128GB quad-channel kit scales memory capacity for virtualisation
  • 2133MHz DDR4 speed matches server platform specifications
  • 2V operation reduces power draw per module
  • 288-pin LRDIMM form factor fits compatible server and workstation slots

Specifications

BrandOWC
Part Number2L1D44R4128S
Capacity128GB (4 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

Other versions of this model

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Questions about this item

What speed does the DDR4 2133 PC4-17000 interface actually run at in a server?

The modules operate at 2133 MHz with CL15 latency under the PC4-17000 JEDEC standard; actual throughput depends on the server memory controller and populated channel count.

Will these 288-pin LRDIMMs fit a standard server DIMM slot and clear CPU coolers?

Each stick is a 288-pin DDR4 LRDIMM without a heat spreader, so it fits any DDR4 288-pin server slot and has a low profile for tight cooler clearance.

What is the correct installation sequence for a 4-module 4Rx4 kit and what mistake should I avoid?

Populate all four modules in the same channel pair per the server manual, enable ECC in BIOS, and do not mix these load-reduced DIMMs with unbuffered memory.

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