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Four green DDR5 RDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM RS720A-E12-RS24U 256GB (4x64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-9FKB-HEPNM MPN RS720A-E12-RS24U

256 GB DDR5 ECC registered server memory kit with four 64 GB modules at 4800 MT/s for ASUS RS720A-E12-RS24U

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity with four 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • Low 1.10 V voltage reduces power draw
  • CL40 latency tuned for server workloads

Purpose-Built Server Memory Kit

This NEMIX RAM kit supplies 256GB of DDR5 4800 registered ECC memory in four 64GB modules. It is configured specifically for the ASUS RS720A-E12-RS24U dual-processor server platform. The PC5-38400 speed rating and CL40 latency match the system's native memory specification.

Ideal for Capacity-Bound Workloads

IT teams running virtualisation clusters, in-memory databases or large-scale analytics on this ASUS 2U server will benefit from the 2Rx4 rank density and registered buffer. Environments that require consumer DIMMs, non-ECC operation or speeds beyond 4800MT/s should select a different product.

Registered ECC with 2Rx4 Organisation

Each module uses a 2Rx4 chip layout and registered signalling to maintain signal integrity across all populated slots. The 1.10V operating voltage and DDR5 interface are fixed by the platform; only modules with these exact electrical characteristics will post successfully.

How it compares

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

Price $7,140.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.89 per GB
Pricier than about 78% 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 numberMR38400-924K4
Total capacity256 GB (4 × 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 items256 GB (4 × 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 288-pin DDR5 RDIMM form factor fit the ASUS RS720A-E12-RS24U server motherboard slots?

Yes, the 288-pin DDR5 RDIMM modules are designed for the ASUS RS720A-E12-RS24U server motherboard memory slots.

What is the correct population order for the four 64GB 2Rx4 modules during installation?

Install the four 64GB 2Rx4 modules following the motherboard manual's channel population sequence for dual-processor configuration.

Will the Samsung, Micron or Hynix DRAM chips require firmware updates or replacement over time?

The DRAM chips do not require firmware updates; ECC corrects errors in operation and modules are replaced only if a failure occurs.

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