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Green 288-pin DDR4 ECC registered RDIMM module with black memory chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz PC4-21300 CL19 2Rx4 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-R0R4-32QSN

16GB DDR4 ECC registered RDIMM running at 2666MHz with CL19 latency for servers and workstations

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB

Ver 7 configuraciones más

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 16GB capacity expands memory for demanding workloads
  • DDR4 2666MHz speed matches PC4-21300 bandwidth
  • 2V operation reduces power draw per module
  • Backward compatible with 2133MHz and 2400MHz systems

Server Memory Upgrade

This 16GB DDR4 RDIMM delivers ECC registered reliability for servers, workstations and NAS systems. It operates at 2666MHz with CL19 latency and 1.2V power draw. The module uses a 288-pin 2Rx4 configuration and meets JEDEC standards for warranty-safe deployment.

Replaces Slower DDR4

The stick upgrades systems running 2133MHz or 2400MHz DDR4 while maintaining full backward compatibility. It is worth the jump when data integrity and registered buffering are required for continuous operation. Standard desktop boards cannot use this memory and it must not be mixed with unbuffered modules.

Capacity And Headroom

A single 16GB rank handles virtualization, database caching and multi-user workloads with room to spare. Headroom shrinks when total installed memory approaches the platform limit or when workloads demand higher bandwidth than 2666MHz provides.

Puntos fuertes

  • ECC registered design protects data integrity in servers
  • 16GB capacity expands memory for demanding workloads
  • DDR4 2666MHz speed matches PC4-21300 bandwidth
  • 2V operation reduces power draw per module
  • Backward compatible with 2133MHz and 2400MHz systems

Especificaciones

BrandOWC
Part Number2R6D42R416GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

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Preguntas sobre este artículo

Will this 288-pin RDIMM fit a standard desktop motherboard?

No, the module is a registered ECC RDIMM built for servers, workstations and NAS systems; standard desktop boards require unbuffered non-ECC memory and will not accept it.

What is the correct seating procedure for the 288-pin DDR4 slot?

Align the notch on the module with the slot key, press straight down until both retention clips snap shut — the step often missed is verifying both clips are fully engaged.

Does the 2Rx4 rank layout affect future expansion?

Yes, each module presents two ranks; the server memory controller has a maximum total rank count, so adding more 2Rx4 sticks later may hit that limit before the slot count is reached.

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