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Six green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS720A-E12-RS12 384GB (6x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-3FD5-KEFZG MPN RS720A-E12-RS12

Six 64 GB DDR5 4800 CL40 ECC registered DIMMs give 384 GB for the ASUS RS720A-E12-RS12 server

  • 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 PC5-38400 bandwidth for server workloads
  • ECC registered RDIMM protects data integrity under load
  • 10 V operation reduces power draw in dense configurations
  • Validated for ASUS RS720A-E12-RS12 dual-processor server

System-specific DDR5 kit

This 384 GB memory kit contains six 64 GB DDR5 modules built for the ASUS RS720A-E12-RS12 dual-processor server. Each stick runs at 4800 MT/s with CL40 latency and operates at 1.1 V. The registered ECC design adds error correction and signal buffering for stable operation under heavy workloads.

Suited for exact ASUS server upgrades

IT teams refreshing or expanding the named 2U platform can install this kit without compatibility guesswork. Builders targeting a different motherboard, a workstation, or a consumer desktop should look elsewhere because the module registration and density are tuned for this specific server model.

Registered ECC DDR5 specification

The modules use 288-pin 2Rx4 DDR5 RDIMM packaging with on-die ECC and registered signalling. That combination is the single attribute that determines whether the memory will post and run reliably in the target ASUS server.

How it compares

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

Price $10,708.99
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 $27.89 per GB
Pricier than about 78% 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

Will the 288-pin DDR5 RDIMM modules fit the ASUS RS720A-E12-RS12 server motherboard?

Yes, the 288-pin DDR5 RDIMM form factor matches the memory slots on the ASUS RS720A-E12-RS12 server motherboard.

What is the correct order for installing the six 64 GB modules across the two processor sockets?

Populate the slots for the first CPU completely before adding modules to the second CPU, following the channel sequence in the server manual.

How often should the ECC registered memory be tested for correctable errors in this 384 GB kit?

Run a full memory diagnostic at least once per quarter and monitor the system event log daily for corrected ECC events.

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