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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 384GB (12x32GB) DDR5 4800 ECC RDIMM ASUS S14NA-U12 memory upgrade

SKU CH-CWM6-ZN00Y

A 384 GB DDR5 ECC RDIMM kit of twelve 32 GB modules at 4800 MT/s, 1.1 V, CL40, 288-pin, registered for the ASUS S14NA-U12 server board

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384 GB total capacity from twelve 32 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth for server workloads
  • ECC registered RDIMM design protects data integrity
  • 1Rx4 organisation and 1.1 V operation for efficient density
  • Validated for ASUS S14NA-U12 server board compatibility

Target system and capacity

This 384GB kit delivers twelve 32GB DDR5 4800 ECC registered DIMMs built for the ASUS S14NA-U12 server board. It suits IT teams running virtualisation clusters, in-memory databases or large container fleets that need maximum registered capacity per channel. Buyers needing unbuffered desktop memory or non-ECC modules should look elsewhere.

Thermals noise and power

Each module operates at 1.10V with CL40 latency and no heat spreader, relying on server chassis airflow for cooling. Registered buffering and single-rank 1Rx4 organisation keep electrical load predictable on the memory controller. The kit draws standard DDR5 registered power without additional thermal hardware.

Upgrade scope and value

The kit replaces any smaller DDR5 RDIMM population on the S14NA-U12, filling all twelve slots with matched 32GB modules for uniform rank layout. The jump is worthwhile when workloads exceed current memory headroom and the platform supports the full 384GB registered configuration.

How it compares

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

Price $10,960.99
Pricier than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $28.54 per GB
Pricier than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K12
Total capacity384 GB (12 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items384 GB (12 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 12 DDR5 RDIMMs into the ASUS S14NA-U12 and what slot order should I follow?

Power down the server, open the chassis, and insert each 288-pin module into the twelve DIMM slots following the population sequence printed on the board or in the ASUS manual; the registered design requires firm, even pressure until the ejectors click.

Will the ECC RDIMMs need any firmware updates or periodic replacement during their service life?

The modules themselves have no firmware to update; ECC corrects single-bit errors on the fly, and the only replacement trigger is a persistent uncorrectable error reported by the platform's memory health monitoring.

At what point does the CL40 latency at 4800 MT/s become the bottleneck during sustained workloads?

Under continuous heavy traffic the CAS 40 timing at 4800 MT/s sets the minimum read latency floor; once the memory controller saturates all twelve ranks, further throughput gains stall at that latency boundary.

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