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Four green DDR3 RDIMM modules with gold contacts and black chips

OWC

OWC 128GB (4x32GB) DDR3 1333 ECC Registered RDIMM server RAM

SKU CH-BBZ5-TSPAM

Four 32 GB DDR3 1333 ECC registered RDIMMs deliver 128 GB at CL9 1.5 V for compatible servers

  • Capacity128GB (4 x 32GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.5V
  • ECCYes

Capacity 128GB (4 x 32GB)

Rank 4Rx4

  • 128 GB total capacity from four 32 GB modules
  • DDR3 1333 speed rated at PC3-10600 CL9 latency
  • ECC registered design detects and corrects data errors
  • 5 V operation matches JEDEC standard for DDR3 RDIMMs
  • 240-pin form factor fits compatible server and workstation slots

Server-grade DDR3 capacity

This 128GB kit delivers four 32GB registered ECC modules built for select workstations and servers that require DDR3 1333 registered memory. The 240-pin RDIMM form factor and 1.5V operation match JEDEC-standard PC3-10600 CL9 specifications. It is designed for systems that specifically support 4Rx4 registered DIMMs and will not function in standard desktop platforms or alongside unbuffered memory.

Upgrading older registered-DDR3 platforms

The kit replaces smaller-capacity registered DDR3 sets or fills empty slots in compatible dual-channel servers and workstations. The jump is worthwhile when the platform’s memory controller and BIOS recognise 32GB 4Rx4 modules and the workload demands ECC integrity at 1333 MT/s. Systems limited to lower-density ranks, unbuffered DIMMs, or a different DDR generation cannot use this memory.

Straightforward DIMM installation

Installation follows the standard 240-pin RDIMM procedure: power down, open the chassis, align the keyed edge connector, and press until the retention clips latch. Common issues arise when the platform does not support 4Rx4 registered modules, when mixed with unbuffered DIMMs, or when the BIOS requires a specific population order for quad-rank parts. Verifying the vendor’s qualified-vendor list before purchase avoids these incompatibilities.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR3 1333 speed rated at PC3-10600 CL9 latency
  • ECC registered design detects and corrects data errors
  • 5 V operation matches JEDEC standard for DDR3 RDIMMs
  • 240-pin form factor fits compatible server and workstation slots

Specifications

BrandOWC
Part Number1R3D34R4128S
Capacity128GB (4 x 32GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions about this item

Will the 240-pin DDR3 RDIMMs fit my server's memory slots?

These modules use the standard 240-pin DDR3 RDIMM form factor, so they fit any server or workstation slot designed for registered DDR3 memory.

What is the correct way to install the 4Rx4 registered DIMMs, and what mistake should I avoid?

Populate slots per the motherboard's channel guide, ensure the registration notch aligns, and press evenly until the latches click; do not mix these registered modules with unbuffered memory.

When will the ECC registered memory need replacement or maintenance?

The modules have no moving parts and require no scheduled maintenance; replace only if diagnostics report correctable errors rising or a module fails completely.

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