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

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC SODIMM Synology DS1823xs+ memory upgrade

SKU CH-0GM3-R1RK8

8GB DDR4 2666 ECC SODIMM module upgrades Synology DS1823xs+ NAS with 1.2V CL19 reliability

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protection guards data integrity for NAS reliability
  • DDR4 2666 speed matches DS1823xs+ specification
  • 2 V operation keeps power draw low
  • 260-pin SODIMM form factor fits the NAS slot
  • 1Rx8 single-rank layout ensures broad compatibility

Synology DS1823xs+ 8 GB DDR4 ECC SODIMM

This 260-pin DDR4 ECC SODIMM adds 8 GB of error-correcting memory to the Synology RackStation DS1823xs+. The unbuffered module runs at 2666 MHz with CL19 timing and 1.20 V operation. It is built for IT professionals who need reliable capacity expansion in a validated NAS platform.

Thermals and power in normal NAS workloads

The module has no heat spreader and draws 1.20 V at stock speed, keeping power draw low inside the chassis. Passive cooling from system airflow is sufficient for typical file-serving and backup tasks. Acoustic impact is negligible because the stick adds no active cooling components.

What the validated compatibility changes

Each stick is stress-tested under load for the DS1823xs+ so the NAS recognises the module at POST without manual configuration. The ECC function corrects single-bit errors automatically, protecting data integrity during RAID rebuilds and long uptime periods. The single 1Rx8 rank layout matches the system's memory controller expectations.

How it compares

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

Price $52.99
Cheaper than about 77% 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 $6.62 per GB
Cheaper than about 60% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered SODIMM
Part numberMSE21300-818K1
Total capacity8 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items8 GB (1 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM

Questions about this item

How do I install this 260-pin SODIMM in my Synology DS1823xs+ and what step is often missed?

Power off the NAS, remove the cover, insert the module at an angle into the slot until the gold contacts are hidden, then press down firmly until the side clips click; the step often missed is fully seating the module so both clips engage.

What maintenance or replacement will this ECC DDR4 module need later?

No routine maintenance is required; if a memory error appears in DSM logs, replace the module, otherwise it runs for the life of the system.

What limit appears first under sustained heavy workloads on this CL19 1.20V module?

The CAS latency of CL19 sets the access timing ceiling; sustained loads hit that timing limit before voltage or thermal throttling becomes a factor.

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