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Two green DDR3L ECC registered DIMMs with gold contacts

OWC

OWC 64GB (2x32GB) DDR3L 1866 CL13 4Rx4 240-pin 1.35V ECC Registered RDIMM server RAM

SKU CH-JKJP-5VZMJ

A dual-channel 64 GB kit of two 32 GB DDR3L 1866 CL13 ECC registered RDIMMs at 1.35 V for servers and workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latencyCL13
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 64GB (2 x 32GB)

Rank 4Rx4

  • ECC Registered design protects data integrity in servers
  • 64 GB dual-channel kit expands memory capacity for heavy workloads
  • DDR3L 1866 CL13 speed delivers responsive performance for workstation tasks
  • Low 1.35 V voltage reduces power draw and heat output
  • JEDEC and RoHS compliant modules ensure broad server compatibility

64 GB DDR3L ECC Registered Kit

This OWC upgrade kit supplies 64 GB of DDR3L memory in a matched pair of 32 GB modules. Each stick is a 240-pin registered DIMM with ECC, running at 1866 MT/s (PC3L-14900) and CL13 latency. The modules operate at 1.35 V and use a 4Rx4 organisation for server and workstation platforms.

Suited for registered-ECC systems only

The kit is designed for workstations, servers, NAS appliances and routers that require registered ECC DDR3L DIMMs. It will not function in standard desktop computers that use unbuffered non-ECC memory, nor can it be mixed with unbuffered modules in the same platform.

4Rx4 registered organisation

The 4Rx4 rank structure is the critical specification that determines compatibility with the memory controller. Systems expecting a different rank configuration or unbuffered DIMMs will not recognise these modules, so verify the platform requirements before purchasing.

How it compares

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

Price $179.99
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 $2.81 per GB
Cheaper than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number1R8T34R4064P
Total capacity64 GB (2 × 32 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latencyCL13
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.35 V

Other versions of this model

5 more in the same range

Questions about this item

Does this DDR3L 1866 kit require a motherboard that supports 240-pin registered ECC DIMMs?

Yes, the modules are 240-pin DDR3L ECC registered RDIMMs and will only work in systems designed for registered server memory.

Can I mix these 4Rx4 registered modules with unbuffered DDR3L DIMMs already in my server?

No, the manufacturer states registered memory cannot be mixed with unbuffered memory in the same system.

How can I verify the kit is running at 1866 MT/s with CL13 timings after installation?

Check the memory speed and latency in your BIOS or a system-information tool; they should report DDR3L 1866 and CAS latency 13.

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