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Two green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 CL19 ECC UDIMM memory upgrade

SKU CH-1Z6H-4N01K

32 GB dual-channel DDR4-2666 ECC UDIMM kit with CL19 latency and 1.2 V operation for Synology NAS systems

  • Capacity32GB (2 x 16GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 32 GB kit expands NAS capacity for heavier workloads
  • ECC unbuffered modules protect data integrity during operation
  • DDR4 2666 CL19 timing balances speed and stability
  • 2 V low voltage reduces power draw and heat
  • 288-pin UDIMM format fits Synology D4EC-2666-16G slots

Synology NAS memory kit

This 32 GB kit contains two 16 GB DDR4 2666 modules built for Synology NAS units. Each stick is an unbuffered ECC UDIMM running at 1.2 V with CL19 latency. The dual-rank 2Rx8 design uses major OEM chips and fits standard 288-pin slots.

Suited for Synology ECC slots

Ideal for administrators expanding a compatible Synology NAS that requires ECC unbuffered DDR4 2666 memory. Not for systems that need registered or load-reduced modules, nor for platforms limited to non-ECC consumer DIMMs. Buyers whose hardware demands a different voltage or pin count should look elsewhere.

DDR4 2666 ECC unbuffered UDIMM

The decisive specification is the combination of DDR4 2666 speed, ECC error correction and unbuffered UDIMM form factor. Only motherboards or NAS appliances that explicitly support this exact module type will recognise the full 32 GB capacity and stability features.

Points forts

  • 32 GB kit expands NAS capacity for heavier workloads
  • ECC unbuffered modules protect data integrity during operation
  • DDR4 2666 CL19 timing balances speed and stability
  • 2 V low voltage reduces power draw and heat
  • 288-pin UDIMM format fits Synology D4EC-2666-16G slots

Caractéristiques

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC Unbuffered UDIMM
Part NumberME21300-628K2
Capacity32GB (2 x 16GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 ECC UDIMM
Rank2Rx8
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible
Package Content32GB (2X16GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 288-PIN ECC Unbuffered UDIMM KIT

Questions sur cet article

Will the 2666 MT/s speed run at that rate in my Synology NAS?

The kit is rated for DDR4 2666 (PC4-21300) and will operate at that speed provided the NAS memory controller supports it; otherwise it downclocks to the highest speed the system allows.

Does the ECC UDIMM interface require a registered or buffered slot?

No, these are unbuffered ECC UDIMMs, so they plug directly into standard 288-pin DDR4 ECC UDIMM slots without needing registered or buffered memory support.

What physical clearance do the 16 GB modules need inside the chassis?

Each module is a standard-height 288-pin DDR4 UDIMM without a heat spreader, so they fit in typical NAS DIMM slots with normal vertical clearance.

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