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Four green DDR3 ECC registered DIMMs with gold contacts, no heat spreaders

OWC

OWC 64GB (4x16GB) DDR3 1333 PC3-10600 CL9 2Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-368B-X5CDP

A 64GB kit of four 16GB DDR3 1333 ECC registered RDIMMs for compatible servers and workstations

  • Capacity64GB (4 x 16GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.5V
  • ECCYes

Capacity 64GB (4 x 16GB)

Rank 2Rx4

  • 64 GB total capacity across four 16 GB modules
  • DDR3 1333 MHz speed rated at PC3-10600 with CL9 latency
  • ECC registered design detects and corrects single-bit errors
  • 240-pin RDIMM form factor for compatible workstation and server slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server Memory Kit

This 64GB kit contains four 16GB DDR3 1333 PC3-10600 CL9 ECC Registered RDIMM modules built to JEDEC and ROHS standards. It targets administrators upgrading select workstations or servers that require 240-pin registered memory with 2Rx4 organisation. The modules operate at 1.5V and cannot be mixed with unbuffered memory or used in standard desktop computers.

Thermals And Power

Each module runs at the standard 1.5V DDR3 voltage without a heat spreader, relying on system airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping keep power draw predictable in multi-DIMM configurations. No active cooling or additional power connectors are required beyond the DIMM slots themselves.

Compliance And Support

JEDEC and ROHS compliance ensures a warranty-safe upgrade that meets OEM specifications for qualified platforms. OWC tests every module in-house and backs the kit with a limited lifetime warranty plus free technical support. The advanced replacement program minimises downtime if a module ever needs service.

Highlights

  • 64 GB total capacity across four 16 GB modules
  • DDR3 1333 MHz speed rated at PC3-10600 with CL9 latency
  • ECC registered design detects and corrects single-bit errors
  • 240-pin RDIMM form factor for compatible workstation and server slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

BrandOWC
Part Number1R3D32R4064S
Capacity64GB (4 x 16GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

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

Questions about this item

How do I install the 240-pin DDR3 RDIMM modules and what step is often missed?

Align the notch on each 240-pin module with the slot key, press firmly until both retention clips click, and populate all four slots as a matched 4 x 16 GB kit — the step often missed is verifying the server requires registered ECC memory and cannot accept unbuffered DIMMs.

What maintenance or replacement will this 64 GB DDR3 kit need over time?

No routine maintenance is required; the modules have no heat spreader and run at 1.5 V, so replacement is only needed if a DIMM fails or the platform is upgraded beyond DDR3 1333.

What limit appears first when this CL9 1333 MHz memory runs under sustained load?

The primary limit is the DDR3 1333 (PC3-10600) bandwidth ceiling at CL9 latency; sustained workloads will saturate throughput before thermal or voltage constraints become an issue.

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