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Two green DDR3 ECC registered DIMMs with gold contacts

OWC

OWC 64GB (2x32GB) DDR3 1600 PC3-12800 CL11 4Rx4 240-pin 1.5V ECC Registered RDIMM Kit

SKU CH-5NR3-PA9T2

A 64GB dual-channel DDR3 ECC registered RDIMM kit running at 1600MHz with CL11 latency for compatible servers and workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 64GB (2 x 32GB)

Rank 4Rx4

  • ECC registered design protects data integrity in servers
  • 64GB dual-channel kit expands memory capacity for heavy workloads
  • DDR3 1600 CL11 timing delivers reliable throughput
  • 5V JEDEC-standard voltage ensures broad platform compatibility
  • 240-pin RDIMM form factor fits select workstations and servers

DDR3 ECC Registered Memory Kit

This OWC kit supplies 64 GB of DDR3 memory in two 32 GB registered DIMMs. Each module runs at 1600 MHz with CL11 latency and operates at the standard 1.5 V. The 240-pin form factor and 4Rx4 organisation are built for multi-channel server platforms.

Workstation and Server Upgrades Only

The modules are ECC registered, so they suit workstations, servers, NAS systems or routers that require registered memory with error correction. They will not function in standard desktop computers or any platform that expects unbuffered non-ECC DIMMs.

Registered ECC with 4Rx4 Organisation

The single specification that decides compatibility is the registered ECC design combined with a 4Rx4 rank layout. Only systems whose memory controller explicitly supports registered ECC DDR3 at this rank configuration can use this kit.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $166.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 64 GB (2 × 32 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $2.61 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6D34R4064P
Total capacity64 GB (2 × 32 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.5 V

Other versions of this model

5 more in the same range

Questions about this item

How much capacity does each 4Rx4 module in this kit provide?

Each registered DIMM in the dual-channel kit is 32GB, giving a total of 64GB.

What voltage do these DDR3 1600 ECC registered modules draw under continuous load?

They operate at the standard 1.5V specified for PC3-12800 DDR3.

Which slot type must the workstation or server already have to accept this 240-pin RDIMM kit?

A 240-pin DDR3 DIMM slot that supports ECC registered memory.

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