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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 260-Pin SODIMM QNAP TVS-h874T memory upgrade

SKU CH-76YJ-RYGZY

16 GB DDR4 2666 CL19 SODIMM module validated for the QNAP TVS-h874T NAS

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • Boosts NAS responsiveness with 16 GB DDR4 2666 speed
  • Low 1.2 V power draw cuts heat in tight bays
  • 2Rx8 dual-rank layout maximises memory bandwidth
  • Validated for QNAP TVS-h874T for drop-in compatibility
  • CL19 latency keeps data flowing under heavy workloads

QNAP TVS-h874T memory upgrade

This 16 GB DDR4 SODIMM is built for the QNAP TVS-h874T SMB NAS. It targets administrators who need to expand system memory for virtualization, container workloads or heavy file serving. The module is validated for that platform and ships as a single 16 GB stick.

260-pin DDR4 2666 unbuffered SODIMM

The stick plugs directly into the NAS DDR4 SO-DIMM slots with no extra hardware. It runs at 1.2 V and uses a standard 2Rx8 unbuffered layout, so the system recognises it without BIOS changes. Adding it frees the existing slots for further expansion if the chassis supports more modules.

CL19 latency under sustained load

Rated at DDR4 2666 with CL19 timings, the module maintains stable throughput during long backup windows or continuous database access. Major OEM Samsung, Micron or Hynix ICs are stress tested under load to prevent errors that can corrupt NAS volumes over time.

How it compares

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

Price $74.99
Cheaper than about 71% 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 $4.69 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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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

Does the CL19 latency limit sustained throughput on the QNAP TVS-h874T?

CL19 is the rated CAS latency at 2666 MT/s; the module runs at 1.2 V without a heat spreader, so latency remains constant under load.

How much heat or noise does the 1.2 V SODIMM add during all-day NAS operation?

The unbuffered DDR4 module draws 1.2 V and has no heat spreader or fan, so it adds negligible heat and zero acoustic noise inside the chassis.

What must the QNAP TVS-h874T already have for this 260-pin DDR4 SODIMM to work?

The NAS needs a free 260-pin DDR4 SODIMM slot that accepts non-ECC unbuffered memory at 2666 MT/s.

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