We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green bare circuit board with black memory chips and gold edge connectors

OWC

OWC 64GB DDR4 2666 CL19 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM server RAM

SKU CH-Z77Z-R6RYX

64GB DDR4 2666 ECC load-reduced LRDIMM for servers, workstations and NAS, CL19 1.2V 288-pin 4Rx4, backward compatible with 2133 and 2400MHz

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4
  • ECC load-reduced design protects data integrity in servers
  • 64 GB capacity expands memory for demanding workloads
  • DDR4 2666 speed matches PC4-21300 bandwidth
  • 2 V operation reduces power draw
  • Backward compatible with 2133 and 2400 MHz systems

64 GB DDR4 LRDIMM for servers and workstations

This module delivers 64 GB of ECC load-reduced DDR4 memory built for servers, workstations and compatible NAS systems. It operates at 1.2 V and uses the 288-pin form factor required by those platforms. It is not compatible with standard desktop computers or unbuffered memory configurations.

Capacity and headroom

A single 64 GB stick provides substantial headroom for virtualisation, large databases and memory-intensive workloads. The module runs at 2666 MHz with CL19 latency and is backward compatible with 2133 MHz and 2400 MHz bus speeds. Systems that require registered or load-reduced DIMMs will benefit; those limited to unbuffered memory cannot use this module.

Load-reduced ECC registered design

The 4Rx4 load-reduced architecture reduces electrical load on the memory controller, allowing higher densities per channel than standard registered DIMMs. This specification determines whether the part matches your platform's memory topology and ECC requirements.

How it compares

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

Price $401.99
Pricier than about 66% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $6.28 per GB
Cheaper than about 61% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2L6D44R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Will the 2666 MHz LRDIMM run with my existing 2133 MHz ECC modules?

The module is backward compatible with 2133 MHz and 2400 MHz systems, so it will operate at the speed of the slowest installed DIMM.

How can I verify the 64 GB LRDIMM is detected correctly after installation?

Check the server BIOS or operating system memory report for 64 GB at 2666 MHz with ECC and load-reduced status shown.

Does the single 288-pin LRDIMM ship alone or with extra parts?

Only the 64 GB DDR4 2666 CL19 4Rx4 1.2 V ECC load-reduced DIMM is included; no cables, brackets or additional memory are supplied.

More in ECC Server RAM

Similar items