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Two green 288-pin DDR4 LRDIMM sticks, no heat spreader, gold contacts

OWC

OWC 64GB (2x32GB) DDR4 2133MHz CL15 4Rx4 ECC LRDIMM 1.2V 288-pin server RAM

SKU CH-F3AV-CJNZE

Dual-channel 64GB DDR4 ECC LRDIMM kit running at 2133MHz CL15 for servers and workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 64GB (2 x 32GB)

  • ECC error correction protects critical server workloads
  • Load-reduced design supports higher density 32GB modules
  • Dual-channel kit delivers 64GB total capacity
  • JEDEC-standard DDR4 2133MHz CL15 at 1.2V
  • 288-pin LRDIMM fits server and workstation platforms

Server-grade DDR4 LRDIMM kit

This 64 GB kit consists of two 32 GB DDR4 2133 MHz CL15 modules built to the PC4-17000 standard. Each stick is a 288-pin ECC load-reduced DIMM operating at 1.2 V with a 4Rx4 rank structure. The modules are designed for servers, workstations and NAS systems that specifically require registered load-reduced memory.

Load-reduced ECC constraint

Load-reduced DIMMs reduce electrical load on the memory bus so higher capacities can be installed per channel, but they only work in platforms whose chipset and BIOS explicitly support LRDIMM technology. The memory cannot be mixed with unbuffered or standard registered DIMMs, and it will not function in consumer desktop or laptop boards that lack ECC LRDIMM support.

Verify platform compatibility

Before ordering, confirm that your motherboard or system documentation lists DDR4 2133 MHz ECC load-reduced DIMMs in a 288-pin 4Rx4 configuration as supported. Check the qualified vendor list for the exact part number and ensure the firmware revision recognises the modules at the rated speed and latency.

How it compares

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

Price $437.99
Pricier than about 68% of the 6,523 comparable items (median $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 $6.84 per GB
Cheaper than about 55% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2L1D44R4064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the dual-channel kit or buy single modules to reach 64 GB?

The kit already provides 64 GB as two matched 32 GB modules, so the dual-channel configuration is ready to install without mixing separate sticks.

What does the 2133 MHz rating deliver in a live server?

The modules run at DDR4 2133 with CL15 latency, giving a PC4-17000 peak transfer rate for workloads that benefit from ECC error correction and load-reduced signalling.

How does the LRDIMM interface affect maximum capacity per channel?

Load-reduced DIMMs buffer the command and address bus, allowing the 4Rx4 organisation to place 32 GB on each 288-pin module without exceeding the memory controller's electrical load limits.

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