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Eight green DDR5 RDIMM modules, bare circuit boards with black chips, 288 pins each

NEMIX RAM

NEMIX RAM RS720QA-E12-RS8U 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-TMRA-95TKD MPN RS720QA-E12-RS8U

DDR5 ECC registered server memory kit providing 256 GB across eight 32 GB modules at 4800 MT/s CL40 for ASUS RS720QA-E12-RS8U 2U4N rack servers

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across eight 32 GB modules
  • DDR5 4800 MT/s rated speed for high-throughput server workloads
  • ECC registered design detects and corrects single-bit errors automatically
  • Low 1.10 V operating voltage reduces power draw per module
  • Validated for ASUS RS720QA-E12-RS8U 2U4N rack server compatibility

256 GB DDR5 4800 ECC RDIMM kit

This 256 GB kit contains eight 32 GB DDR5 4800 registered DIMMs with ECC and CL40 latency. The modules operate at 1.10 V and use a 288-pin RDIMM form factor. They are built for the ASUS RS720QA-E12-RS8U high-density 2U4N rack server.

Who this suits and who should look elsewhere

IT teams upgrading that specific ASUS server platform will match the qualified part number. Builders needing non-ECC UDIMMs, lower capacities, different speeds or desktop motherboard compatibility should choose other memory.

Deciding specification

The registered ECC RDIMM design with 1Rx4 organisation is the single factor that determines fit; only systems expecting registered DDR5 ECC modules at 4800 MT/s can use this kit.

How it compares

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

Price $6,696.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.16 per GB
Pricier than about 72% 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 numberMR38400-314K8
Total capacity256 GB (8 × 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 items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How does the CL40 latency behave when the 256GB kit runs at 4800 MT/s under sustained load?

The modules operate at DDR5 4800 with CL40 timing; registered ECC design helps maintain stability during continuous server workloads.

What is the power draw and thermal output of the 1.10V 1Rx4 modules without heat spreaders in a 2U chassis?

Each 32GB RDIMM runs at 1.10V; the registered buffer reduces electrical load on the memory controller, aiding thermal management in dense 2U4N configurations.

Which ASUS RS720QA-E12-RS8U motherboard revision and BIOS version are required for this 8-module kit?

The kit is validated for the ASUS High Density 2U4N Rack Server Model RS720QA-E12-RS8U; consult the system manual for supported memory population rules.

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