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Four green 288-pin DDR4 UDIMM sticks in a clear tray

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 2666 ECC UDIMM memory upgrade

SKU CH-45D7-XGW0Q

A 64GB kit of four 16GB DDR4 2666 ECC UDIMM modules at 1.2V CL19 for Synology UC3200 NAS

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB total capacity from four 16 GB modules
  • ECC protection detects and corrects single-bit errors
  • DDR4 2666 speed rated at PC4-21300 bandwidth
  • Low 1.2 V operation reduces power draw
  • 288-pin UDIMM form factor fits Synology UC3200 NAS

Synology UC3200 memory kit

This 64 GB kit contains four 16 GB DDR4 2666 ECC UDIMM modules validated for the Synology UC3200 NAS. Each stick runs at 1.2 V with CL19 latency and uses a 2Rx8 organisation for stable server workloads.

288-pin unbuffered ECC installation

The modules fit standard 288-pin DDR4 slots and require no registered buffer, so they install directly into the UC3200 memory bays. ECC protection corrects single-bit errors, freeing the system from silent data corruption during heavy file serving.

Low-voltage thermal profile

Operating at 1.20 V keeps power draw modest and heat output low inside the compact NAS chassis. Without heat spreaders the modules rely on system airflow, which the UC3200 design provides for quiet, continuous operation.

How it compares

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

Price $532.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $8.33 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 UDIMM
Part numberME21300-628K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 ECC UDIMM
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 items64 GB (4 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

Will the 1.2 V DDR4 2666 CL19 modules hit any thermal limit during continuous operation in the Synology UC3200?

The modules run at 1.2 V without a heat spreader; the UC3200 chassis airflow is designed for standard JEDEC UDIMMs at this voltage.

How much noise, heat or extra power do the four 16 GB sticks add when the NAS runs all day?

Each stick draws 1.2 V at DDR4 2666 with CL19 timing; total power is low and the UC3200 fan curve does not change under normal load.

What must the Synology UC3200 already have so this 288‑pin ECC UDIMM kit works?

The UC3200 must support DDR4 2666 ECC unbuffered UDIMMs and provide four free 288‑pin slots.

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