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Six green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM RS720A-E12-RS24U 768GB (6x128GB) DDR5 4800 CL40 1.1V ECC RDIMM memory upgrade

SKU CH-NWT1-DV7CR MPN RS720A-E12-RS24U

A 768 GB DDR5 ECC registered server memory kit with six 128 GB modules at 4800 MT/s CL40 and 1.1 V

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768 GB capacity handles extreme workloads
  • DDR5 4800 MT/s speed accelerates data throughput
  • ECC registered design protects critical data integrity
  • Low 1.10 V operation reduces power draw
  • Six 128 GB 4Rx4 modules populate 288-pin slots

Server memory kit

This kit provides 768GB of DDR5 registered ECC memory across six 128GB modules. It runs at 4800MHz with CL40 latency and operates at 1.1V. The 288-pin RDIMM form factor is built for the ASUS RS720A-E12-RS24U dual-processor 2U server.

Compatibility and limits

Suits administrators expanding that specific ASUS server to its supported memory capacity. Not for workstations or desktops that use unbuffered DIMMs, nor for any system that cannot accept registered ECC modules. Buyers needing a different capacity or a different server platform should verify their motherboard qualification list first.

Decisive specification

The 4Rx4 rank organisation and registered ECC design are the single factors that determine whether this kit will post in the target server. If the motherboard memory controller does not support quad-rank registered DDR5 at 4800MHz, the modules will not function.

How it compares

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

Price $22,775.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $29.66 per GB
Pricier than about 84% 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 numberMR38400-744K6
Total capacity768 GB (6 × 128 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 items768 GB (6 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does this kit use the standard 288-pin DDR5 RDIMM form factor for the ASUS RS720A-E12-RS24U server?

Yes, each of the six modules is a 288-pin DDR5 RDIMM measuring the standard DIMM length and keyed for DDR5 server boards.

What is the correct population order for the six 128 GB modules in a dual-processor ASUS RS720A-E12-RS24U?

Fill the six slots belonging to the first CPU before adding any to the second CPU; the motherboard manual lists the exact slot numbers for each channel.

When should the 4Rx4 registered ECC modules be replaced in a 24/7 ASUS RS720A-E12-RS24U deployment?

Replace them if the system logs show rising correctable ECC errors, if memory diagnostics report failures, or after a major platform upgrade that requires different speed or capacity.

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