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Two green 288-pin DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS720-E11-RS24U 128GB (2×64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-3E15-5TAN0 MPN RS720-E11-RS24U

Dual 64 GB DDR5 4800 ECC RDIMM modules totalling 128 GB at 1.1 V with CL40 latency for ASUS RS720-E11-RS24U 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
  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity in servers
  • 1 V operation reduces power draw under load
  • Validated for ASUS RS720-E11-RS24U 2U dual-socket server

128GB DDR5 ECC RDIMM Kit

This 128GB kit contains two 64GB DDR5 4800 ECC registered DIMMs built for the ASUS RS720-E11-RS24U 2U dual-socket server. It targets administrators who need validated memory for mission-critical workloads on this specific platform.

2Rx4 Registered Modules

Each module uses a 2Rx4 organisation with CL40 latency at 1.10V, delivering PC5-38400 throughput while the registered buffer reduces electrical load on the memory controller. The ECC function corrects single-bit errors to protect data integrity under sustained load.

Check DIMM Slot Population Rules

Verify the RS720-E11-RS24U motherboard manual for supported population sequences and maximum capacity per channel before ordering. Confirm the server BIOS is at a version that recognises 64GB DDR5 RDIMMs and that the power budget accommodates the additional modules.

How it compares

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

Price $3,341.99
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 $26.11 per GB
Pricier than about 72% 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

Will the 2Rx4 RDIMM organisation ever need a firmware update on the ASUS RS720-E11-RS24U?

No firmware updates are required for the memory modules themselves; the 2Rx4 organisation is fixed in hardware and operates at the rated 4800 MT/s once the platform is configured.

What thermal limit appears first when the kit runs continuously at 4800 MT/s in a 2U chassis?

The modules have no heat spreader, so the DRAM junction temperature reaches its throttling point before the 1.10 V supply or the registered buffer becomes the bottleneck.

How much power does the 128 GB kit draw and how loud is it under all-day load?

At 1.10 V the two 64 GB RDIMMs consume only a few watts each and produce no audible noise because they have no moving parts.

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