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Green circuit board with black memory chips, no heat spreader, 288-pin DDR5 UDIMM

NEMIX RAM

NEMIX RAM 16GB DDR5 4800 CL40 1Rx8 UDIMM QNAP TS-H1677AXU-RP memory upgrade

SKU CH-36N0-HTDV5

A 16 GB DDR5 module running at 4800 MT/s with CL40 latency, built for the QNAP TS-H1677AXU-RP NAS

  • Capacity16GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 16GB

  • 16 GB DDR5 4800 MT/s boosts NAS responsiveness
  • CL40 CAS latency keeps data flowing smoothly
  • 1 V operation reduces power draw and heat
  • Single-rank 1Rx8 layout simplifies memory controller load
  • 288-pin UDIMM fits QNAP TS-H1677AXU-RP directly

QNAP TS-H1677AXU-RP memory upgrade

This 16GB DDR5 module is built specifically for the QNAP TS-H1677AXU-RP NAS. It runs at 4800 MT/s with a CAS latency of CL40 and operates at 1.1V. The single-rank 1Rx8 unbuffered design uses major OEM chips from Samsung, Micron or Hynix and fits a standard 288-pin UDIMM slot.

NAS administrators adding capacity

Administrators who need to expand the memory of a TS-H1677AXU-RP will find this module validated for that platform. It is not suitable for systems that require ECC error correction, registered buffering or a different DDR generation, and it lacks a heat spreader for builds that demand one.

Sustained NAS workloads

All modules are stress tested under load to verify stability during continuous file serving, virtualization or backup tasks. The 1.1V operating voltage keeps power draw consistent over long periods, and the unbuffered topology avoids extra latency in steady-state operation.

Highlights

  • 16 GB DDR5 4800 MT/s boosts NAS responsiveness
  • CL40 CAS latency keeps data flowing smoothly
  • 1 V operation reduces power draw and heat
  • Single-rank 1Rx8 layout simplifies memory controller load
  • 288-pin UDIMM fits QNAP TS-H1677AXU-RP directly

Specifications

BrandNEMIX RAM
SeriesQNAP NAS Compatible Series Memory
ModelQNAP DDR5 4800MHZ Non-ECC Unbuffered UDIMM NAS Memory
Part NumberMD38400-618K1
Capacity16GB
SpeedDDR5 4800 (PC5 38400)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemQnap
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 UDIMM
Rank1Rx8
FeaturesDDR5 Non-ECC Unbuffered UDIMM Motherboard Compatible
Package Content16GB (1X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM

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Questions about this item

Will my QNAP TS-H1677AXU-RP accept this 16 GB DDR5 4800 UDIMM without any other hardware changes?

Yes — the module is built for that NAS and plugs straight into a free 288-pin DDR5 slot; no extra parts are required.

Can I leave the original memory in place and add this 1Rx8 CL40 stick to the remaining slots?

The NAS supports mixed populations, so you can keep the factory modules and add this 16 GB DDR5 4800 stick in an empty slot.

After installation, how do I confirm the new 16 GB DDR5 4800 module is recognised at 4800 MT/s?

Open the QNAP web UI, go to System Information → Memory, and verify the total shows the extra 16 GB running at 4800 MT/s.

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