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Two green circuit boards with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 CL40 ECC UDIMM Kit

SKU CH-A917-CDFN9

A 64 GB DDR5 ECC UDIMM kit running at 4800 MT/s with CL40 latency for compatible ASUS motherboards

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 64 GB total capacity with two 32 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC error correction for data integrity
  • CL40 CAS latency at 1.10 V operating voltage
  • 288-pin unbuffered UDIMM form factor for ASUS motherboards

ECC UDIMM kit for ASUS DDR5 motherboards

This 64 GB kit contains two 32 GB DDR5 4800 modules built for ASUS Prime A620M-A-CSM, Pro B650M-CT-CSM, Prime B650M-A II-CSM and Pro Q670M-C-CSM motherboards. ECC error correction and unbuffered operation suit workstations and small servers that need data integrity without registered memory. Buyers who need registered DIMMs or higher speeds cannot use this kit.

Package contents and software impact

The box delivers only the two 288-pin UDIMMs; no heat spreaders, cables, adapters or software utilities are included. ECC functionality is handled entirely by the motherboard and BIOS, so the modules add no extra management layer. Systems without ECC support in the chipset or BIOS will not gain error correction from these sticks.

Installation notes and common pitfalls

Each module slots into a standard 288-pin DDR5 socket at 1.1 V with CL40 2Rx8 timing; no tools or firmware updates are required beyond the board's normal memory training. The most frequent issue is mixing these ECC UDIMMs with non-ECC or registered modules, which prevents the system from posting. Populate the slots specified in the motherboard manual for dual-channel operation.

How it compares

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

Price $1,392.99
Pricier than about 64% 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 $21.77 per GB
Pricier than about 67% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Gaming Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC Unbuffered UDIMM
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 systemsASUS
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

Questions about this item

Will the 32GB DDR5 modules need any periodic maintenance or component replacement over time?

No, DDR5 UDIMMs have no moving parts or user-serviceable components; they operate maintenance-free for their service life.

What thermal limit appears first when the 4800 CL40 kit runs continuously at 1.10 V?

The memory controller's temperature threshold is reached before the unbuffered modules themselves, since they lack a heat spreader and rely on case airflow.

How much power does the 64GB 2Rx8 kit draw and how audible is it during all-day workloads?

At 1.1 V the pair draws only a few watts and is completely silent — there are no fans or coils on the bare PCB.

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