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Green rectangular circuit board with gold edge connector and black memory chips, no heat spreader

OWC

OWC 8GB DDR4 2666MHz ECC UDIMM CL19 1.2V 1Rx8 288-pin memory upgrade

SKU CH-ZJ64-PF3S7

8GB DDR4 2666MHz ECC UDIMM for Synology RS2818RP+ NAS, CL19 1.2V single-rank module

  • Capacity8GB
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 8GB

  • 8GB capacity expands NAS memory for heavier workloads
  • DDR4 2666MHz CL19 timing delivers responsive data access
  • ECC unbuffered design protects data integrity in Synology RS2818RP+
  • 2V operation reduces power draw and heat output
  • JEDEC and RoHS compliant for warranty-safe installation

Targeted NAS upgrade

This single 8GB DDR4 2666MHz ECC UDIMM is validated for the Synology RackStation RS2818RP+. It delivers 8GB of capacity at PC4-21300 speed with CL19 latency and 1.2V operation. The unbuffered 1Rx8 module uses a standard 288-pin layout for direct installation.

Thermals and power

Operating at the JEDEC-standard 1.2V, the module draws minimal power and runs without a heat spreader. Passive cooling inside the chassis is sufficient for normal NAS workloads. The low voltage keeps system thermals stable during continuous operation.

Build integration

The DIMM fits any slot accepting DDR4 288-pin ECC unbuffered memory and is backward compatible with 2133MHz and 2400MHz bus speeds. It frees an empty slot for future expansion while adding error-correcting reliability to the array. Buyers needing registered or load-reduced modules should look elsewhere.

Puntos fuertes

  • 8GB capacity expands NAS memory for heavier workloads
  • DDR4 2666MHz CL19 timing delivers responsive data access
  • ECC unbuffered design protects data integrity in Synology RS2818RP+
  • 2V operation reduces power draw and heat output
  • JEDEC and RoHS compliant for warranty-safe installation

Especificaciones

BrandOWC
Part Number2E6D41R808GB
Capacity8GB
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS2818RP+

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Preguntas sobre este artículo

How do I install this 288-pin DDR4 module in my Synology RS2818RP+ and what step is often missed?

Power off the NAS, open the chassis, align the notch on the 288-pin DDR4 stick with the slot key, press firmly until both retention clips click, then verify the new 8GB capacity in DSM before closing the case.

What maintenance or replacement will this ECC UDIMM need over its service life?

No routine maintenance is required; the module has no heat spreader and runs at 1.2V, so replacement is only necessary if a memory error appears or you expand capacity beyond the current 8GB.

What limit appears first when this CL19 2666MHz stick runs sustained workloads in the RS2818RP+?

The CAS latency of CL19 at 2666MHz sets the timing ceiling, and the single-rank 1Rx8 organisation caps bandwidth before thermal or voltage limits are reached.

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