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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS720A-E12-RS12 384GB (12x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-V2WJ-5MZ63 MPN RS720A-E12-RS12

A 384GB DDR5-4800 ECC registered memory kit of twelve 32GB 288-pin RDIMMs at CL40 and 1.1V for the ASUS RS720A-E12-RS12 server

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384GB total capacity across 12 modules for large-scale server workloads
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects memory errors automatically
  • 1V operation reduces power draw in dense configurations
  • Validated for ASUS RS720A-E12-RS12 2U dual-processor servers

384GB DDR5 ECC RDIMM kit

This 384GB kit contains twelve 32GB DDR5 4800 CL40 registered DIMMs built for the ASUS RS720A-E12-RS12 dual-processor server. Each module runs at 1.10V and uses a 1Rx4 organisation with on-die ECC for data integrity. The 288-pin RDIMM form factor matches the server's memory slots exactly.

Who this suits

IT teams upgrading the named ASUS 2U server to its maximum supported capacity will find the correct part numbers and validated timings in this kit. Builders working on any other platform, or who need unbuffered UDIMMs, lower voltages, or different pin counts, should look elsewhere.

The deciding spec

Registered ECC RDIMM with 1Rx4 rank structure at DDR5 4800 CL40 is the single specification that determines compatibility; only systems that require this exact combination will accept the modules.

How it compares

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

Price $11,611.99
Pricier than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $30.24 per GB
Pricier than about 86% 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 numberMR38400-314K12
Total capacity384 GB (12 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items384 GB (12 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What server motherboard is required for the RS720A-E12-RS12 12-module kit to be recognised?

The kit is validated for the ASUS 2U dual-processor server model RS720A-E12-RS12; install it in that platform for guaranteed operation.

Can I keep my existing DDR5 4800 CL40 1Rx4 ECC RDIMMs installed alongside these twelve 32 GB modules?

Yes, provided the motherboard supports mixed-capacity populations and the combined rank count per channel stays within the platform limit.

How do I verify the full 384 GB kit is running at 4800 MT/s with CL40 timings after installation?

Check the BIOS memory information screen or run a tool such as dmidecode to confirm speed, voltage of 1.10 V, CAS latency 40 and ECC status.

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