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Four green DDR5 UDIMM sticks in a kit

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 CL40 1.1V UDIMM memory upgrade for QNAP TS-H1277AXU-RP

SKU CH-4M6N-HXM91

64GB kit of four 16GB DDR5 4800 CL40 1.1V non-ECC UDIMM modules validated for QNAP TS-H1277AXU-RP NAS

  • Capacity64GB (4 x 16GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 64GB 4X16GB

  • 64 GB kit expands NAS capacity for heavy workloads
  • DDR5 4800 speed raises bandwidth for demanding applications
  • CL40 latency and 1.1 V operation keep power draw low
  • Four 16 GB UDIMM modules fill all slots in matched set
  • Validated for QNAP TS-H1277AXU-RP to ensure trouble-free installation

QNAP TS-H1277AXU-RP Memory Upgrade

This 64 GB kit contains four 16 GB DDR5 modules built for the QNAP TS-H1277AXU-RP NAS. It runs at 4800 MT/s with CL40 latency at 1.10 V. The unbuffered, non-ECC UDIMMs use major-brand DRAM chips and are validated for that specific system.

Replaces Slower or Smaller DDR5 Kits

Swapping the factory memory for this kit adds capacity and keeps the native 4800 speed when the NAS workload outgrows the original configuration. The upgrade is worthwhile when virtual machines, containers or large file caches need more than the stock amount.

Tool-Free Installation With Standard Slots

The 288-pin UDIMMs drop into the NAS memory slots without adapters or cables. Common issues are mixing these non-ECC sticks with ECC modules or leaving a slot empty in a channel that expects a matched pair.

Highlights

  • 64 GB kit expands NAS capacity for heavy workloads
  • DDR5 4800 speed raises bandwidth for demanding applications
  • CL40 latency and 1.1 V operation keep power draw low
  • Four 16 GB UDIMM modules fill all slots in matched set
  • Validated for QNAP TS-H1277AXU-RP to ensure trouble-free installation

Specifications

BrandNEMIX RAM
SeriesQNAP NAS Compatible Series Memory
ModelQNAP DDR5 4800MHZ Non-ECC Unbuffered UDIMM NAS Memory
Part NumberMD38400-618K4
Capacity64GB (4 x 16GB)
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 Content64GB (4X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

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Questions about this item

What physical slot does the 288-Pin DDR5 UDIMM kit need to fit in the QNAP TS-H1277AXU-RP?

The kit uses standard 288-Pin DDR5 UDIMM slots; the NAS provides four such slots for the 4 x 16 GB modules.

Which step is often missed when installing the 1.10V CL40 modules in this NAS?

After seating each module, the ejector clips must click fully shut; a loose clip leaves the stick unrecognised at boot.

What component of the 1Rx8 DDR5 4800 kit will need replacement first in continuous operation?

The DRAM chips themselves set the service life; they are rated for standard JEDEC endurance and are not user-serviceable.

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