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Green circuit board with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 128GB DDR5 4800 CL40 4Rx4 1.1V ECC RDIMM memory upgrade

SKU CH-SW7P-G29YW MPN RS700A-E12-RS12U

128 GB DDR5 4800 ECC registered RDIMM for ASUS RS700A-E12-RS12U servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB DDR5 4800 CL40 registered ECC module for high-capacity server workloads
  • 1V operating voltage reduces power draw in dense memory configurations
  • 4Rx4 rank organisation maximises density per DIMM slot
  • 288-pin RDIMM form factor fits ASUS RS700A-E12-RS12U 1U dual-processor servers
  • PC5-38400 speed rating delivers 4800 MT/s bandwidth for demanding applications

Server-grade DDR5 for ASUS 1U systems

This 128 GB DDR5 4800 registered DIMM is built for the ASUS RS700A-E12-RS12U dual-processor server. It delivers ECC protection and registered signalling for mission-critical workloads. IT teams upgrading memory in compatible 1U platforms can install a single module to reach high capacity quickly.

Low-voltage operation reduces thermal load

The module runs at 1.10 V without a heat spreader, keeping power draw modest inside dense 1U chassis. ECC and registered buffering maintain data integrity while the CL40 latency supports stable throughput at 4800 MT/s. Airflow across the bare PCB is sufficient for normal server duty cycles.

Sustained enterprise workloads stay stable

Rigorous stress testing under load validates reliability for continuous operation in virtualisation, database and HPC tasks. The 4Rx4 organisation maximises density per channel without exceeding platform limits. Compatibility is locked to the named ASUS server model to avoid qualification surprises.

How it compares

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

Price $3,735.99
Pricier than about 75% 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 $29.19 per GB
Pricier than about 83% 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 do I install the 288-pin DDR5 RDIMM into the ASUS RS700A-E12-RS12U server, and which step is often missed?

Power off the server, open the chassis, align the module notch with the slot key, press firmly until both retention clips click, then verify the 128GB capacity appears in BIOS or the OS memory report.

What maintenance or replacement will this 4Rx4 ECC registered module need over its service life?

No scheduled maintenance is required; if a correctable error count rises or the module fails POST, replace the single 128GB stick — there are no user-serviceable parts on the DIMM itself.

What limit appears first when this CL40 1.1V memory runs sustained workloads on the RS700A-E12-RS12U?

The DDR5 4800 MT/s data rate and CL40 latency set the throughput ceiling; thermal throttling may engage before bandwidth saturates if chassis airflow is insufficient.

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