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Two green circuit boards with black chips, no heat spreader, 260-pin SODIMM form factor

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 ECC SODIMM Synology RS822RP+

SKU CH-Q595-7CEHK

A 32 GB DDR4 ECC SODIMM kit for Synology RS822RP+ NAS, running at 2666 MHz with CL19 latency and 1.2 V operation

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 32 GB kit expands NAS capacity for demanding workloads
  • Dual 16 GB modules enable dual-channel throughput
  • DDR4 2666 ECC protects data integrity in critical operations
  • Unbuffered 1.2 V SODIMM installs directly in Synology RS822RP+
  • 2Rx8 CL19 chips tested for enterprise reliability

Synology RS822RP+ DDR4 ECC SODIMM kit

This 32 GB kit contains two 16 GB DDR4 2666 ECC unbuffered SODIMM modules built for the Synology RackStation RS822RP+. Each stick runs at 1.2 V with CL19 latency and uses a 2Rx8 organisation on 260 pins. The memory is designed for NAS workloads that require error correction and stable operation.

DDR4 2666 ECC SODIMM interface limits

The modules operate at the DDR4 2666 (PC4-21300) data rate, so the system bus cannot run faster than this speed. ECC unbuffered topology means the memory controller must support error correction without registered buffering. Mixing with non-ECC or faster DDR4 SODIMMs will force the channel down to the lowest common speed and may disable error correction.

Compatibility checks before ordering

Verify that your RS822RP+ has two free SODIMM slots and that the firmware recognises 2Rx8 ECC unbuffered modules at 1.2 V. Confirm the chassis can accommodate the 260-pin form factor without a heat spreader. If the NAS already contains memory, ensure the existing sticks share the same voltage, rank and ECC type to avoid boot issues.

How it compares

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

Price $241.99
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 $7.56 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameNEMIX RAM
Product lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered SODIMM
Part numberMSE21300-628K2
Total capacity32 GB (2 × 16 GB)
Product type260-PIN DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items32 GB (2 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM KIT

Questions about this item

Should I choose the 32 GB kit or a single 16 GB module?

The 32 GB kit contains two matched 16 GB modules for dual-channel operation; a single 16 GB module would run in single-channel mode.

What does the 2666 MT/s rating mean once installed in the Synology RS822RP+?

The modules run at DDR4 2666 with CL19 latency, delivering the rated speed and timings supported by the RS822RP+ memory controller.

Will the 260-pin DDR4 ECC SODIMM interface work with my RS822RP+?

Yes — the kit uses 260-pin DDR4 ECC unbuffered SODIMMs, which match the RS822RP+ slot and ECC requirements.

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