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Green 288-pin DDR4 ECC UDIMM module with black chips and gold contacts

OWC

OWC 8GB DDR4 2666 ECC UDIMM CL19 1Rx8 1.2V for Synology RS2821RP+

SKU CH-YKCY-6V7VW

An 8 GB DDR4 2666 ECC UDIMM module with CL19 latency and 1.2 V operation, validated for the Synology RS2821RP+ RackStation

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 8GB

  • 8GB capacity expands Synology RS2821RP+ memory headroom
  • DDR4 2666 CL19 timing matches system specification
  • ECC unbuffered design protects data integrity
  • 2V operation reduces power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrade

System-Specific DDR4 ECC Module

This 8 GB DDR4 2666 ECC UDIMM is built for the Synology RackStation RS2821RP+ and runs at 1.2 V with CL19 latency. The single-rank 1Rx8 design plugs into a 288-pin slot and meets JEDEC PC4-21300 specifications for warranty-safe upgrades.

Capacity and Headroom

An 8 GB stick adds usable memory for multi-user file services, Docker containers and surveillance workloads on the RS2821RP+. The module down-clocks to 2133 MHz or 2400 MHz if the system requires it, but it cannot exceed the platform’s maximum supported capacity or populate unsupported slots.

Build Integration

The unbuffered ECC DIMM fits standard UDIMM sockets without a heat spreader, leaving clearance for adjacent components. It requires a platform that accepts 288-pin DDR4 ECC UDIMMs at 1.2 V and will not work in systems needing registered, load-reduced or non-ECC memory.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $57.99
Cheaper than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $7.25 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2E6D41R808 GB
Total capacity8 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology RackstationRS2821RP+

Other versions of this model

5 more in the same range

Questions about this item

Will the 2666MHz ECC UDIMM run correctly in a Synology RS2821RP+ that currently uses 2133MHz modules?

The module is backward compatible with 2133MHz and 2400MHz systems, so it will operate at the lower speed alongside your existing RAM.

How can I verify the 8GB DDR4 2666 CL19 stick is detected and running with ECC enabled after installation?

Check the Synology DSM Info Center; it will show the new 8GB capacity, DDR4 2666 speed, and ECC status for the installed DIMM.

Does the single 1Rx8 288-pin DIMM ship with a heat spreader or any extra mounting hardware?

The module has no heat spreader and includes only the DIMM itself; no additional brackets or tools are required for the RS2821RP+ slots.

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