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Green circuit board with black memory chips, no heat spreader, 260-pin SODIMM form factor

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 CL19 2Rx8 1.2V 260-pin SODIMM QNAP TVS-h674T memory upgrade

SKU CH-QKVQ-115BR

16GB DDR4 2666 CL19 SODIMM upgrades QNAP TVS-h674T NAS memory capacity

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB capacity expands NAS workload headroom
  • DDR4 2666 speed matches QNAP TVS-h674T spec
  • CL19 latency keeps data access responsive
  • 2 V operation reduces power draw and heat
  • 260-pin SODIMM form factor fits the NAS memory slot

QNAP TVS-h674T DDR4 SODIMM Upgrade

This NEMIX RAM module adds 16GB of DDR4 2666 memory to the QNAP TVS-h674T NAS. It is a 260-pin SODIMM built for systems that accept non-ECC unbuffered DDR4 at 1.20V. The single stick installs in minutes without special tools.

CL19 2Rx8 Timing at 2666 MT/s

The module runs at DDR4 2666 (PC4-21300) with CAS latency 19 and a 2Rx8 rank organisation. This timing and density combination is the specific parameter that determines whether the NAS recognises and stabilises the upgrade.

Fits One SODIMM Slot in the NAS

The stick occupies a single 260-pin slot inside the TVS-h674T, leaving any remaining slots free for further expansion. It requires no heat spreader, draws 1.20V, and uses standard non-ECC unbuffered signalling compatible with the platform.

How it compares

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

Price $65.99
Cheaper than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $4.12 per GB
Cheaper than about 84% 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 numberMS21300-628K1
Total capacity16 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 items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN Non-ECC Unbuffered SODIMM

Questions about this item

Will the 2666 MHz speed run at full rate inside my QNAP TVS-h674T?

The module is rated at 2666 MHz PC4-21300, and the TVS-h674T memory controller supports that frequency, so it will operate at the advertised speed.

Does the 260-pin SODIMM slot in the TVS-h674T accept this unbuffered non-ECC DDR4 stick?

Yes, the NAS uses standard 260-pin DDR4 SODIMM slots, and this module is unbuffered non-ECC, matching the platform requirements.

Will the 16 GB 2Rx8 module physically fit the memory compartment of the TVS-h674T?

The stick is a standard 260-pin SODIMM without a heat spreader, so it clears the TVS-h674T's low-profile memory bay.

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