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Green rectangular DDR4 RDIMM module with black chips on both sides, no heat spreader, gold edge contacts

OWC

OWC 64GB DDR4 3200 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM for QNAP ES1686dc ES2486dc

SKU CH-GR36-5NGXA

64 GB DDR4 3200 ECC registered RDIMM validated for QNAP ES1686dc and ES2486dc servers

  • Capacity64GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 64GB

  • 64 GB capacity expands server memory for heavy workloads
  • DDR4 3200 speed with CL22 latency delivers responsive data throughput
  • ECC registered design detects and corrects single-bit errors automatically
  • 2 V operation keeps power draw low in dense configurations
  • Validated for QNAP ES1686dc and ES2486dc systems

ECC Registered RDIMM for QNAP ES-Series

This 64GB DDR4 3200 module is an ECC Registered DIMM built for QNAP ES1686dc and ES2486dc servers. It runs at PC4-25600 with CL22 latency and 1.2V operation. The 2Rx4 rank configuration and 288-pin form factor match the original QNAP part number RAM-64GDR4ECK0-RD-3200.

Suited for compatible QNAP NAS upgrades

This memory suits administrators expanding capacity in the listed ES-series models with validated ECC Registered modules. It is not for standard desktop PCs or workstations that require unbuffered non-ECC DIMMs. Builders mixing registered and unbuffered memory should look elsewhere because the two types cannot operate together. Systems needing a different speed, voltage or rank layout are also not served by this part.

Single 64GB module at DDR4 3200 CL22

The decisive specification is the 64GB capacity delivered in one registered ECC module at DDR4 3200 CL22. This density allows a large memory increase per slot while maintaining the error correction and signal integrity required by the target QNAP platforms.

Highlights

  • 64 GB capacity expands server memory for heavy workloads
  • DDR4 3200 speed with CL22 latency delivers responsive data throughput
  • ECC registered design detects and corrects single-bit errors automatically
  • 2 V operation keeps power draw low in dense configurations
  • Validated for QNAP ES1686dc and ES2486dc systems

Specifications

BrandOWC
Part Number3R2D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemQNAP ES1686dc
QNAP ES2486dc

Other versions of this model

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Questions about this item

Is this a single 64GB module or a kit of smaller sticks?

The part number 3R2D42R464GB represents one 64GB DDR4 3200 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM.

What real-world speed does DDR4 3200 PC4-25600 deliver in a QNAP ES1686dc?

The module runs at the JEDEC-rated 3200 MT/s with CL22 latency, providing the maximum standard bandwidth the ES1686dc memory controller supports.

Will this ECC Registered DDR4 work in a standard desktop motherboard?

No. Registered ECC RDIMMs require a server or workstation platform such as the QNAP ES1686dc or ES2486dc and cannot be used in consumer desktop boards.

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