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Two green DDR5 RDIMM modules, black chips, no heat spreader

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-JH4B-GD5FY MPN RS700A-E12-RS12U

DDR5 4800 ECC RDIMM kit adds 128 GB in two 64 GB modules running at CL40 1.10 V for ASUS RS700A-E12-RS12U servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity with two 64GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design for data integrity
  • 10V operating voltage for efficient power use
  • Validated for ASUS RS700A-E12-RS12U server systems

128GB DDR5 ECC RDIMM kit

This NEMIX RAM kit delivers 128GB of DDR5 4800 memory across two 64GB registered DIMMs. It is built for the ASUS RS700A-E12-RS12U 1U dual-processor server where ECC and registered operation are required. The modules run at CL40 latency with a 1.1V supply.

Check motherboard slots and CPU support

Verify the server has free 288-pin DDR5 RDIMM slots and that both processors support the 4800 MT/s data rate. Confirm the BIOS is current enough to recognise 64GB 2Rx4 modules. Ensure the platform requires registered ECC memory before ordering.

Registered design with major OEM chips

The 2Rx4 organisation uses Samsung, Micron or Hynix components without heat spreaders, suited to the 1U chassis airflow. The 288-pin RDIMM form factor locks into the server board securely. Registered buffering reduces electrical load on the memory controller for stable operation under continuous load.

How it compares

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

Price $3,227.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.22 per GB
Pricier than about 70% 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 numberMR38400-924K2
Total capacity128 GB (2 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the kit include only the two 64 GB modules or any extra brackets or cables?

The package contains exactly two 64 GB DDR5 4800 CL40 ECC RDIMM modules — no brackets, cables or other accessories are included.

Why choose the 128 GB 2Rx4 kit instead of a smaller capacity or single-rank option?

This kit delivers 128 GB total via two 2Rx4 64 GB modules at DDR5 4800, matching the RS700A-E12-RS12U server’s supported population rules for maximum registered ECC capacity.

What does the DDR5 4800 CL40 rating mean for real-world throughput in this server?

The modules run at 4800 MT/s with CAS 40 at 1.10 V, providing PC5-38400 bandwidth per module when the memory controller operates at the rated DDR5 4800 speed.

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