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Green circuit board with gold contacts and black memory chips

OWC

OWC 16GB DDR3 1066 PC3-8500 CL7 2Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-FWM2-PV429

Adds 16 GB of ECC registered DDR3 1066 memory to compatible servers and workstations

  • Capacity16GB
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCYes

Capacity 16GB

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 16GB capacity expands memory for demanding workloads
  • DDR3 1066 speed matches PC3-8500 system requirements
  • CL7 latency improves response in registered configurations
  • 5V operation meets JEDEC standard for registered DIMMs

16 GB DDR3 ECC Registered RDIMM

This 16 GB DDR3 module runs at 1066 MT/s with CL7 latency and a 1.5 V operating voltage. It uses a 240-pin RDIMM form factor and a 2Rx4 rank configuration. The module includes ECC and registered buffering for data integrity in multi-socket environments. It is built for select workstations and servers that require registered memory.

Replaces lower-capacity or non-ECC DDR3 DIMMs

The jump is worth it when a system supports registered ECC memory and needs 16 GB per slot to reach higher total capacity. It will not work in standard desktop platforms that accept only unbuffered modules. Mixing with unbuffered DIMMs is not supported and will prevent boot. Buyers who need unbuffered memory for a consumer motherboard cannot use this module.

Installs into a 240-pin DDR3 RDIMM slot

Alignment keys on the module and socket prevent incorrect insertion. The system must explicitly support registered ECC DDR3 at 1066 MT/s; otherwise the module will not be recognised. A common issue is installing this module in a desktop board that only accepts unbuffered memory. Another is mixing registered and unbuffered DIMMs in the same platform.

Highlights

  • ECC registered design protects data integrity in servers
  • 16GB capacity expands memory for demanding workloads
  • DDR3 1066 speed matches PC3-8500 system requirements
  • CL7 latency improves response in registered configurations
  • 5V operation meets JEDEC standard for registered DIMMs

Specifications

BrandOWC
Part Number8R5D32R416GB
Capacity16GB
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Other versions of this model

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Questions about this item

Will this 16 GB DDR3 module fit a 240-pin registered DIMM slot?

Yes, it is a 240-pin DDR3 ECC RDIMM that requires a registered server or workstation slot; it will not work in unbuffered desktop boards.

What is the correct way to seat the 1.5 V RDIMM so the ECC register initialises?

Align the notch with the key, press straight down until both side clips click, and ensure the system BIOS is set to registered mode before boot.

When should the 2Rx4 1066 MHz module be replaced or tested?

Run a full memory diagnostic at install and after any unexplained crashes; replace if errors appear or when the platform is upgraded beyond DDR3.

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