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Two green 240-pin DDR3 RDIMM modules with gold contacts and black chips, no heat spreaders

OWC

OWC 16GB (2x8GB) DDR3 1066 PC3-8500 CL7 2Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-PSXH-QKZDD

16 GB dual-channel DDR3-1066 ECC registered RDIMM kit for servers and workstations

  • Capacity16GB (2 x 8GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCYes

Capacity 16GB (2 x 8GB)

Rank 2Rx4

  • ECC registered design prevents data errors in critical workloads
  • Dual-channel 16 GB kit boosts multi-threaded throughput
  • DDR3 1066 CL7 timing balances speed and stability
  • 5 V JEDEC-standard voltage ensures broad server compatibility
  • 240-pin RDIMM form factor fits registered DIMM slots

16GB DDR3 ECC Registered Kit

This dual-channel kit provides 16GB of DDR3 1066 memory built for workstations and servers. It uses registered ECC RDIMMs to maintain data integrity in multi-socket or always-on environments. Standard desktop motherboards cannot use these modules. Buyers needing unbuffered non-ECC memory for a consumer PC should look elsewhere.

Capacity and Headroom

The 16GB total split across two 8GB ranks suits virtualization hosts, database nodes or NAS appliances that benefit from error correction. Registered buffering adds electrical load, so the platform chipset must explicitly support RDIMMs; otherwise the system will not post. Workloads that exceed 16GB or require faster than 1066 MT/s will need higher-capacity or higher-speed kits.

Compliance and Voltage Flexibility

JEDEC and RoHS compliance means the modules meet industry electrical and environmental standards for warranty-safe upgrades. The parts are qualified at both 1.5V and 1.35V, allowing deployment in systems that request either voltage without manual adjustment. No heat spreaders are included, so airflow across the DIMM slots must be adequate for sustained loads.

Highlights

  • ECC registered design prevents data errors in critical workloads
  • Dual-channel 16 GB kit boosts multi-threaded throughput
  • DDR3 1066 CL7 timing balances speed and stability
  • 5 V JEDEC-standard voltage ensures broad server compatibility
  • 240-pin RDIMM form factor fits registered DIMM slots

Specifications

BrandOWC
Part Number8R5D32R4016P
Capacity16GB (2 x 8GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
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

Can this DDR3 1066 CL7 2Rx4 ECC RDIMM kit run alongside existing DDR3 1066 ECC registered modules in the same server?

The kit is JEDEC-standard DDR3 1066 PC3-8500 CL7 2Rx4 1.5V ECC registered RDIMM. Mixing ranks, voltages or latencies can prevent the system from posting, so match the installed modules on every specification.

How can I confirm the 16GB dual-channel kit is recognised and operating with ECC after installation?

Enter the system BIOS or UEFI and verify that 16GB total memory is reported, speed reads 1066 MHz, and ECC status shows enabled or active for each DIMM slot.

Does the package contain only the two 8GB RDIMMs or are any cables, brackets or software licences included?

The box contains the two 8GB 240-pin DDR3 ECC registered RDIMM modules only; no heat spreaders, cables, brackets or software are supplied.

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