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OWC

OWC 32GB (2x16GB) DDR4 2666 ECC UDIMM memory upgrade

SKU CH-QQDE-7YVDJ

32 GB kit of two 16 GB DDR4 2666 ECC UDIMM modules for Synology RS2821RP+ NAS

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8

Capacity 32GB (2 x 16GB)

  • 32 GB dual-channel kit boosts NAS responsiveness
  • ECC protection guards data integrity in Synology RS2821RP+
  • JEDEC-standard DDR4 2666 CL19 runs at 1.2 V for efficiency
  • Unbuffered 2Rx8 288-pin DIMMs install without tools
  • Backward compatible with 2133 MHz and 2400 MHz systems

Capacity and Fit

This 32 GB kit contains two 16 GB DDR4 ECC UDIMM modules built for the Synology RackStation RS2821RP+. Each stick runs at 2666 MHz with CL19 latency at 1.2 V and uses a 2Rx8 rank layout. The unbuffered design matches the NAS memory slots without requiring registered DIMM support.

Sustained Operation

ECC circuitry corrects single-bit errors on the fly, preventing silent data corruption during long compute or storage workloads. The JEDEC-standard timings and 1.2 V operation keep power draw steady, so the modules maintain rated speed inside a densely populated chassis without thermal throttling. No heat spreaders are fitted, relying on system airflow for cooling.

Platform Limits

The kit is validated for the RS2821RP+ and will down-clock automatically to 2133 MHz or 2400 MHz if the memory controller demands it. Systems that require registered or load-reduced DIMMs cannot use these unbuffered modules. Builders needing more than 32 GB must populate additional slots with identical specification memory.

How it compares

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

Price $231.99
Cheaper than about 57% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 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 number2E6D42R8032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology RackstationRS2821RP+

Other versions of this model

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Questions about this item

How much power does the 1.2V DDR4 kit draw when the NAS runs continuously?

The modules operate at 1.2V, the standard DDR4 voltage, so power draw stays low even under 24/7 NAS workloads.

Does the Synology RS2821RP+ need any extra hardware or firmware before I install these 288-pin ECC UDIMMs?

No extra hardware is required; the kit is designed as a direct drop-in upgrade for the RS2821RP+ memory slots.

Will the 2666MHz CL19 modules run stably alongside any existing 2133MHz or 2400MHz sticks I keep in the system?

Yes, the kit is backward compatible with 2133MHz and 2400MHz speeds and will down-clock automatically to match slower modules.

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