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Six green DDR5 RDIMM sticks, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 768GB (6x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-H4HV-V76DX MPN RS520A-E12-RS24U

A 768 GB DDR5 4800 ECC registered server memory kit of six 128 GB modules for the ASUS RS520A-E12-RS24U

  • 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 for heavy workloads
  • DDR5 4800 speed with CL40 latency for responsive throughput
  • ECC registered design protects data integrity
  • 10 V operation reduces power draw per module
  • Six 128 GB 288-pin RDIMMs tuned for ASUS RS520A-E12-RS24U

Purpose-built server kit

This 768 GB kit contains six 128 GB DDR5 4800 ECC registered DIMMs built for the ASUS RS520A-E12-RS24U single-socket 2U server. It targets IT teams running virtualisation, databases or high-throughput workloads that demand maximum memory capacity with error correction.

Straightforward DIMM installation

The 288-pin RDIMMs seat in the server's standard DDR5 slots; no special tools are required beyond opening the chassis. Common issues include mixing ranks or speeds across channels, leaving a slot population sequence unfinished, or forgetting to enable ECC in BIOS after the modules are detected.

Verify slot count and population rules

Confirm the RS520A-E12-RS24U has at least six DDR5 DIMM slots and review the motherboard manual for the approved 4Rx4 population order before ordering. Ensure the system firmware is current enough to initialise 128 GB registered modules at 1.10 V and CL40 latency.

How it compares

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

Price $25,168.99
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 $32.77 per GB
Pricier than about 90% 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

How do I confirm the kit runs at 4800 MT/s with CL40 after installation?

Enter the system BIOS or UEFI and verify the memory speed reads 4800 MT/s and the CAS latency shows CL40; the registered ECC modules will also report correctable error counts if the platform supports it.

What comes in the package and do I need extra parts?

The box contains six 128 GB DDR5 4800 registered ECC RDIMMs for a total of 768 GB; no additional cables, brackets or cooling are required for installation.

Which capacity version should I choose for the RS520A-E12-RS24U?

This kit is the 768 GB (6 × 128 GB) configuration built for the ASUS RS520A-E12-RS24U; select it when you need the full 768 GB capacity supported by the server.

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