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Four green circuit boards with black memory chips and gold edge connectors

OWC

OWC 128GB (4x32GB) DDR4 2400MHz CL17 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-4PKZ-AT31K

128 GB DDR4 ECC registered server memory kit with four 32 GB modules at 2400 MHz CL17

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 128GB (4 x 32GB)

Show 2 more configurations

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 128 GB kit (4 × 32 GB) maximises memory capacity
  • DDR4 2400 MHz CL17 meets JEDEC PC4-19200 standard
  • Low 1.2 V operation reduces power draw
  • 288-pin RDIMM form factor fits server and workstation slots

OWC 128GB DDR4 ECC Registered Kit

This OWC kit provides 128GB of DDR4 server memory across four 32GB registered DIMMs. Each module runs at 2400MHz with CL17 latency and 1.2V operation. The 2Rx4 ECC registered design targets workstation and server platforms that require error-correcting, buffered memory.

Suited for servers needing matched ECC RDIMMs

The four-module configuration suits administrators upgrading compatible servers, workstations or NAS systems with a validated 128GB set. Builders of standard desktop PCs or consumer laptops cannot use registered ECC memory and should choose unbuffered non-ECC modules instead.

Registered ECC DDR4 at 2400MHz CL17

The registered ECC DDR4 specification at 2400MHz CL17 is the single factor that decides fit. Only systems explicitly supporting DDR4 registered ECC RDIMMs at this speed and latency will accept the kit.

Highlights

  • ECC registered design protects data integrity in servers
  • 128 GB kit (4 × 32 GB) maximises memory capacity
  • DDR4 2400 MHz CL17 meets JEDEC PC4-19200 standard
  • Low 1.2 V operation reduces power draw
  • 288-pin RDIMM form factor fits server and workstation slots

Specifications

BrandOWC
Part Number2R4D42R4128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

5 more in the same range

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

Questions about this item

What comes in the box and is any extra hardware required?

The kit contains four 32 GB DDR4 2400 MHz CL17 ECC registered RDIMM modules for a total of 128 GB. No additional hardware is needed; install the modules directly into compatible 288-pin server or workstation slots.

How do I decide between the available capacities or speeds?

This specific kit is a single 128 GB (4 × 32 GB) configuration running at DDR4 2400 (PC4-19200) with CL17 latency. Choose it when your platform requires registered ECC memory at this speed and density.

What does the 2400 MHz rating mean once the memory is installed?

The modules operate at 2400 MT/s (PC4-19200) with CL17 timing at 1.2 V. Actual throughput depends on the server or workstation memory controller and the number of populated channels.

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