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Four green DDR3L 240-pin RDIMM modules in static bags

OWC

OWC 128GB (4x32GB) DDR3L 1333 PC3L-10600 CL9 4Rx4 240-pin 1.35V ECC Registered RDIMM server RAM

SKU CH-F81M-55ZC4

A 128GB quad-channel DDR3L 1333 ECC registered kit with four 32GB 240-pin modules at 1.35V CL9 for compatible servers and workstations

  • Capacity128GB (4 x 32GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1333 (PC3L 10600)
  • CAS LatencyCL9
  • Voltage1.35V
  • ECCYes

Capacity 128GB (4 x 32GB)

Rank 4Rx4

  • 128 GB total capacity from four 32 GB modules
  • DDR3L 1333 MHz CL9 for reliable server throughput
  • ECC registered design detects and corrects single-bit errors
  • 35 V low-voltage operation reduces power draw
  • 240-pin RDIMM form factor fits compatible workstation and server slots

Server-grade ECC RDIMM kit

This OWC kit delivers 128GB of DDR3L ECC registered memory across four 32GB modules. It targets administrators upgrading compatible workstations, servers or NAS appliances that require 240-pin DDR3L 1333 registered DIMMs with error correction.

JEDEC-standard 1.35 V registered modules

Each 4Rx4 module operates at 1.35V and meets PC3L-10600 CL9 timings, ensuring warranty-safe compatibility with OEM specifications. The registered buffer and ECC functionality cannot be mixed with unbuffered memory, so the kit only suits platforms designed for registered ECC DIMMs.

Straightforward DIMM installation

Modules seat in standard 240-pin DDR3 slots without extra cables or software. The main risk is installing them in a desktop board or mixing ranks with unbuffered sticks, which will prevent the system from posting.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR3L 1333 MHz CL9 for reliable server throughput
  • ECC registered design detects and corrects single-bit errors
  • 35 V low-voltage operation reduces power draw
  • 240-pin RDIMM form factor fits compatible workstation and server slots

Specifications

BrandOWC
Part Number1R3T34R4128S
Capacity128GB (4 x 32GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1333 (PC3L 10600)
CAS LatencyCL9
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions about this item

Will the 4Rx4 registered DIMMs need any firmware updates or battery-backed maintenance over time?

No firmware or battery maintenance is required; the modules are JEDEC-standard DDR3L 1333 CL9 1.35 V registered ECC DIMMs that operate without user-serviceable parts.

What limit appears first when the kit runs at full 1333 MT/s load continuously?

The memory controller's maximum supported capacity and rank count per channel will be reached before the modules themselves hit a thermal or voltage ceiling.

How much heat and power does the 128 GB kit produce during all-day operation?

Each 32 GB DDR3L 1.35 V module draws low voltage without a heat spreader, so total power stays within standard registered DIMM limits and airflow in a server chassis handles the heat.

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