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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 768GB (12x64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-GAYV-ZDE38 MPN RS520A-E12-RS24U

DDR5 ECC registered server memory kit delivering 768GB across twelve 64GB modules at 4800MHz for the ASUS RS520A-E12-RS24U

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768GB capacity with twelve 64GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • Low 1.10V voltage reduces server power draw
  • Validated for ASUS RS520A-E12-RS24U 2U server

Targeted server memory kit

This 768GB kit consists of twelve 64GB DDR5 4800 registered ECC RDIMMs built for the ASUS RS520A-E12-RS24U single-socket 2U server. IT teams specify it when workloads demand maximum registered capacity with error correction.

Build integration

Each module runs at 1.1V with CL40 timing and a 2Rx4 organisation across 288 pins. The registered design places less electrical load on the memory controller, freeing headroom for full population of all twelve slots.

Kit contents

The package delivers the complete 12-module set matched to the server model part number MR38400-924K12. No additional brackets, cables or software licences are included; installation follows the server manual.

How it compares

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

Price $18,763.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $24.43 per GB
Pricier than about 69% 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 numberMR38400-924K12
Total capacity768 GB (12 × 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 items768 GB (12 × 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 1.10V operating voltage keep power draw low during continuous 24/7 server workloads?

Each 64 GB module runs at 1.10 V, the standard DDR5 voltage, so total power scales with the 12 installed DIMMs rather than exceeding the platform budget.

Does the registered ECC design add noticeable fan noise or heat in a 2U chassis running all day?

Registered DIMMs with ECC do not generate extra heat beyond normal DDR5 operation; the 2U server’s existing airflow handles the 12 modules without requiring louder fans.

Must the ASUS RS520A-E12-RS24U motherboard already support 2Rx4 DDR5 4800 RDIMMs for this kit to work?

Yes — the kit is validated for that specific ASUS single-socket 2U model, which must accept 288-pin DDR5 4800 registered ECC modules in a 12 x 64 GB configuration.

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