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Two green SODIMM sticks side by side, no heat spreaders

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 CL19 SODIMM QNAP TVS-h674T

SKU CH-SM7T-FXMXH

A 32 GB kit of two 16 GB DDR4 2666 CL19 SODIMM modules built for the QNAP TVS-h674T NAS

  • 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 doubles NAS capacity for demanding workloads
  • 2666 MT/s DDR4 speed matches QNAP TVS-h674T specifications
  • CL19 latency at 1.2 V keeps power draw low
  • 2Rx8 dual-rank organisation maximises memory density per slot
  • 260-pin SODIMM form factor installs directly in NAS memory bays

Capacity and compatibility

This 32 GB kit contains two 16 GB DDR4 2666 SODIMM modules built for the QNAP TVS-h674T NAS. Each module runs at 1.20 V with CL19 latency and a 2Rx8 organisation. The 260-pin unbuffered non-ECC design matches the factory memory slots in that system.

Upgrading from the base configuration

Many units ship with a smaller amount of memory or a single module. Adding this matched pair doubles capacity and enables dual-channel operation, which benefits virtualisation, container workloads and large file caches. The jump is worthwhile when the NAS regularly hits its memory ceiling during heavy multi-user access.

Build integration

The modules install directly into the two SODIMM slots without tools or additional cooling. Because they are unbuffered non-ECC, they work with the standard memory controller in the TVS-h674T and leave no free slots for further expansion. The low 1.20 V draw keeps power demand minimal inside the compact chassis.

How it compares

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

Price $147.99
Cheaper than about 62% 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 $4.62 per GB
Cheaper than about 81% 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 lineQNAP NAS Compatible Series Memory
Model nameQNAP DDR4 2666 MHz Non-ECC Unbuffered SODIMM NAS Memory
Part numberMS21300-628K2
Total capacity32 GB (2 × 16 GB)
Product type260-Pin DDR4 SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsQnap
In the box
Included items32 GB (2 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN Non-ECC Unbuffered SODIMM KIT

Questions about this item

Does this kit use 260-pin DDR4 SODIMM modules that fit the QNAP TVS-h674T slots?

Yes, each 16 GB module is a 260-pin DDR4 SODIMM built for the TVS-h674T memory slots.

What is the correct way to seat both SODIMMs so the system recognises the full 32 GB?

Insert each module at an angle until the gold contacts disappear, then press down firmly until the side clips click on both sticks.

When should I consider replacing these non-ECC unbuffered modules?

Replace them if the NAS shows repeated memory errors, fails to boot with both installed, or you upgrade to a platform that requires ECC memory.

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