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Green 240-pin DDR3 ECC registered RDIMM module, no heat spreader

OWC

OWC 16GB DDR3 1600 ECC Registered RDIMM 1R6D32R416GB

SKU CH-DZVR-WZPAY

16GB DDR3 1600 ECC registered RDIMM for servers, workstations and NAS systems

  • Capacity16GB
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes
  • ECC protection prevents data corruption in critical workloads
  • Registered design supports stable operation in multi-module server configurations
  • 16 GB capacity expands memory headroom for virtualization and databases
  • DDR3 1600 CL11 at 1.5 V matches JEDEC-standard timing and voltage
  • Direct replacement for HP part numbers 684066B21, 687465001 and A2Z52AA

DDR3 1600 ECC RDIMM

The OWC 16GB DDR3 1600 PC3-12800 CL11 module is a 240-pin registered DIMM designed for workstations, servers and NAS systems. It operates at 1.5V with ECC error correction and a 2Rx4 rank configuration. This memory will not function in standard desktop computers and cannot be mixed with unbuffered modules.

Sustained-load behaviour

JEDEC-standard compliance and ROHS adherence mean the module maintains its rated 1600MHz speed and CL11 latency during continuous server workloads. Registered buffering reduces electrical load on the memory controller, helping stability when all slots are populated in multi-socket platforms.

Registered ECC constraint

The single specification that decides fitment is the registered ECC RDIMM form factor; only systems that explicitly support 240-pin DDR3 registered ECC memory can use this upgrade. Builders needing unbuffered or non-ECC DDR3 must choose a different module.

Highlights

  • ECC protection prevents data corruption in critical workloads
  • Registered design supports stable operation in multi-module server configurations
  • 16 GB capacity expands memory headroom for virtualization and databases
  • DDR3 1600 CL11 at 1.5 V matches JEDEC-standard timing and voltage
  • Direct replacement for HP part numbers 684066B21, 687465001 and A2Z52AA

Specifications

BrandOWC
Part Number1R6D32R416GB
Capacity16GB
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Questions about this item

How much power does the 16GB DDR3 1600 ECC Registered RDIMM draw at its rated 1.5V during continuous server workloads?

The module operates at the standard DDR3 voltage of 1.5V. As a registered ECC DIMM, it includes a register that adds a small, constant overhead compared to unbuffered memory, but total power per stick remains within the JEDEC DDR3 limits for 16GB density.

What motherboard features are required to run this 2Rx4 240-pin DDR3 1600 RDIMM?

The system must provide DDR3 slots that accept 240-pin registered ECC modules, support 1.5V operation, and have a chipset or CPU memory controller qualified for registered DIMMs. Standard desktop boards that only take unbuffered memory will not work.

Can this 16GB 2Rx4 PC3-12800 CL11 RDIMM share channels with older 1Rx4 or 2Rx8 registered modules in the same server?

Mixing ranks per channel is often allowed by server memory controllers, but the platform's qualified vendor list decides. Population rules usually require identical rank structure per channel for best stability; check the system manual before combining different rank geometries.

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