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Four green DDR5 UDIMM modules in a row

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.1V 2Rx8 UDIMM QNAP TS-H1277AXU-RP memory upgrade

SKU CH-BGYM-R9XX7

A 128 GB DDR5 memory kit of four 32 GB modules running at 4800 MT/s with CL40 latency, 1.1 V operation and 2Rx8 unbuffered design, validated for the QNAP TS-H1277AXU-RP NAS

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 128GB 4X32GB

  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 2Rx8 dual-rank 288-pin UDIMM unbuffered non-ECC design
  • validated for QNAP TS-H1277AXU-RP NAS compatibility

128GB DDR5 kit for QNAP TS-H1277AXU-RP

This 128GB kit contains four 32GB DDR5 4800 UDIMM modules built for the QNAP TS-H1277AXU-RP NAS. It targets administrators who need the maximum supported memory for virtualization, container workloads or large ZFS caches.

Verify DDR5 UDIMM slots and non-ECC support

Before ordering confirm the NAS has four free 288-pin DDR5 UDIMM slots and that the firmware accepts non-ECC unbuffered memory. The modules run at 1.1V with CL40 latency and are organised as 2Rx8 dual-rank chips.

Replaces smaller or slower DDR5 configurations

The kit replaces any lower-capacity DDR5 4800 kit or mixed-speed modules currently installed. The upgrade is worthwhile when the NAS hits memory limits during heavy multi-user file serving, VM hosting or deduplication tasks.

Highlights

  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 2Rx8 dual-rank 288-pin UDIMM unbuffered non-ECC design
  • validated for QNAP TS-H1277AXU-RP NAS compatibility

Specifications

BrandNEMIX RAM
SeriesQNAP NAS Compatible Series Memory
ModelQNAP DDR5 4800MHZ Non-ECC Unbuffered UDIMM NAS Memory
Part NumberMD38400-328K4
Capacity128GB (4 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemQnap
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 UDIMM
Rank2Rx8
FeaturesDDR5 Non-ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (4X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

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Questions about this item

Does the kit include all four 32 GB modules or do I need to buy additional sticks?

The kit ships with four 32 GB modules for a total of 128 GB, so no extra sticks are required.

Why choose the CL40 4800 MHz version instead of a lower-latency kit?

CL40 at 4800 MHz matches the QNAP TS-H1277AXU-RP memory controller specification, ensuring stable operation without manual tuning.

Will the 1.1 V 2Rx8 DDR5 modules run at the rated 4800 MHz in my TS-H1277AXU-RP?

Yes, the 1.1 V 2Rx8 DDR5 UDIMMs are validated for 4800 MHz operation in the TS-H1277AXU-RP and will run at that speed automatically.

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