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

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 384GB (6x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-ZBWF-HNEE7 MPN RS520A-E12-RS12U

384GB DDR5 4800 ECC registered server memory kit with six 64GB modules for ASUS RS520A-E12-RS12U

  • Total capacity384 GB (6 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384 GB total capacity across six 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity under load
  • 10 V operation reduces power draw per module
  • Validated for ASUS RS520A-E12-RS12U 2U server systems

Compatibility & Configuration

This 384GB kit is built for the ASUS RS520A-E12-RS12U single-socket 2U server. Six 64GB modules fill the board with DDR5 4800 ECC registered memory at 1.10V. IT teams managing virtualisation, databases or high-throughput workloads gain the capacity and error correction those tasks demand. The registered design and 2Rx4 organisation match the platform's memory topology.

Not for non-server builds

Desktop workstations, consumer motherboards and laptops cannot use registered ECC RDIMMs. Systems limited to UDIMM slots or lower maximum capacities will not accept this kit. Buyers who need standard unbuffered memory or smaller module counts should look at UDIMM alternatives.

DDR5 4800 CL40 registered ECC

The modules run at DDR5 4800 (PC5-38400) with CL40 latency and 1.10V operation. ECC and registered buffering protect data integrity in 24/7 server environments. The 288-pin RDIMM form factor and 2Rx4 rank structure are fixed by the ASUS qualification. Verify the server's memory population rules before installation.

How it compares

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

Price $10,480.99
Pricier than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (6 × 64 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $27.29 per GB
Pricier than about 76% 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 numberMR38400-924K6
Total capacity384 GB (6 × 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 items384 GB (6 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What DDR5 speed and CAS latency does this 384GB kit run at?

The kit operates at DDR5 4800 (PC5-38400) with a CL40 latency.

What physical slot type and module count are required for this 6x64GB kit?

Six 288-pin DDR5 RDIMM slots are needed; each module is a 64GB 2Rx4 registered DIMM.

How should the six RDIMMs be populated in the ASUS RS520A-E12-RS12U server?

Follow the motherboard manual's population sequence for six DIMMs per CPU; a common error is skipping the prescribed slot order.

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