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Single 288-pin DDR5 RDIMM module, green PCB, black edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC RDIMM 4Rx4 CL40 1.1V ASUS S14NA-U12 memory upgrade

SKU CH-SCCX-48K12

A 128 GB DDR5 4800 registered ECC RDIMM with CL40 latency and 1.1 V operation, validated for the ASUS S14NA-U12 server board

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB DDR5 capacity scales server workloads
  • ECC registered design protects data integrity
  • 4800 MT/s speed feeds high-throughput applications
  • 4Rx4 organisation maximises density per slot
  • 1 V operation reduces platform power draw

Capacity and compatibility

This 128GB DDR5 module is built for the ASUS S14NA-U12 server board. It delivers registered ECC memory for workloads that require error correction and high density. The single DIMM format lets administrators populate slots one at a time as capacity needs grow.

Thermals and power

Operating at 1.1V, the module runs at standard DDR5 voltage without a heat spreader. Registered buffering reduces electrical load on the memory controller during sustained server workloads. Typical power draw remains within JEDEC limits for 4800 MT/s RDIMMs.

Build and connectors

The 288-pin RDIMM uses major OEM chips from Samsung, Micron or Hynix in a 4Rx4 organisation. CL40 latency matches the DDR5 4800 specification for stable operation. No heat spreader means the module fits tight server chassis without clearance issues.

How it compares

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

Price $3,946.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $30.84 per GB
Pricier than about 88% 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 numberMR38400-744K1
Total capacity128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How is the 288‑pin DDR5 RDIMM installed in the ASUS S14NA‑U12, and which step is often missed?

Power down the server, open the chassis, align the module notch with the slot key, press firmly until both retention clips click, then verify in BIOS that the 128GB module is recognised at 4800 MT/s.

What maintenance or replacement will the ECC RDIMM need during its service life?

No scheduled maintenance is required; the module is validated for continuous operation, and a replacement would only be needed if a memory error count exceeds the platform’s correctable threshold.

What limit appears first when the 4Rx4 128GB module runs sustained workloads at 1.1 V?

The CAS latency of CL40 and the registered buffer define the timing ceiling; thermal throttling is not a factor because the module has no heat spreader and operates within standard DDR5 voltage.

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