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Two green DDR5 UDIMM modules, no heat spreaders, 288-pin edge connectors, 64GB kit

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 ECC UDIMM memory upgrade for QNAP TS-H1277AXU-RP

SKU CH-BKDS-2N5E9

64GB kit of two 32GB DDR5 4800 ECC unbuffered UDIMM modules at 1.1V CL40 for QNAP TS-H1277AXU-RP NAS

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V

Capacity 64GB 2X32GB

  • 64 GB kit expands NAS capacity for heavier workloads
  • DDR5 4800 speed with CL40 latency keeps data moving
  • ECC UDIMM protects stored files from memory errors
  • 1 V operation reduces power draw and heat
  • Validated for QNAP TS-H1277AXU-RP for drop-in compatibility

System-Specific DDR5 ECC Kit

This 64GB kit contains two 32GB DDR5 4800 ECC UDIMM modules built for the QNAP TS-H1277AXU-RP NAS. It targets administrators who need error-correcting memory to protect data integrity in storage arrays and virtualisation workloads.

288-Pin UDIMM at 1.1V

The unbuffered DDR5 modules install directly into the NAS motherboard slots without registered buffering. Each stick runs at 1.10V with CL40 timing and 2Rx8 organisation, freeing the system from non-ECC consumer memory that lacks corruption detection.

Upgrade from Non-ECC or Smaller Capacity

The kit replaces standard UDIMMs that cannot report or correct single-bit errors, and it doubles density over 32GB configurations. The jump is worth it when the NAS runs ZFS deduplication, container workloads or long-term archival jobs where silent data corruption is unacceptable.

How it compares

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

Price $1,196.99
Pricier than about 62% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $18.70 per GB
Pricier than about 64% 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 DDR5 4800 MHz ECC Unbuffered UDIMM NAS Memory
Part numberME38400-328K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsQnap
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN ECC Unbuffered UDIMM KIT

Other versions of this model

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Questions about this item

Does the 4800 MT/s DDR5 kit hit a thermal limit during sustained NAS operation?

The modules run at 1.10 V without a heat spreader; sustained load in a QNAP TS-H1277AXU-RP relies on chassis airflow to keep temperatures within JEDEC limits.

How much noise or extra heat do the modules add when the NAS runs all day?

Unbuffered DDR5 UDIMMs have no moving parts and draw 1.1 V, so they add negligible acoustic noise and only modest heat that the system fans already manage.

What must the NAS already support for this 64 GB kit to work?

The TS-H1277AXU-RP must accept 288-pin DDR5 ECC UDIMMs at 4800 MT/s with 2Rx8 organisation and 1.1 V operation.

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