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Four green DDR5 RDIMM modules, no heat spreaders

NEMIX RAM

NEMIX RAM RS720-E11-RS24U 512GB (4x128GB) DDR5 4800 PC5-38400 4Rx4 1.1V CL40 288-Pin ECC RDIMM memory upgrade

SKU CH-GYYC-31MGR MPN RS720-E11-RS24U

512 GB DDR5 server kit in four 128 GB registered ECC modules at 4800 MT/s CL40 for the ASUS RS720-E11-RS24U

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from four 128 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for ASUS RS720-E11-RS24U 2U dual-socket server

Server Memory Kit

This 512GB kit contains four 128GB DDR5 4800 ECC registered DIMMs built for the ASUS RS720-E11-RS24U dual-socket server. The modules run at 1.1V with CL40 latency and use a 4Rx4 organisation. They are designed for mission-critical workloads that require error correction and registered buffering.

Suitable Applications

This memory suits administrators expanding the ASUS RS720-E11-RS24U to its supported capacity for virtualisation, database or high-performance computing tasks. It is not for desktop PCs, workstations or laptops that accept only unbuffered non-ECC DDR5. Builders needing lower capacities or different server platforms should verify their motherboard qualifications first.

Deciding Specification

The kit provides 512GB total capacity across four 288-pin DDR5 RDIMM modules operating at PC5-38400 speed. This capacity and registered ECC format are the primary factors that determine compatibility with the target ASUS 2U server.

How it compares

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

Price $16,062.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.37 per GB
Pricier than about 90% 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 numberMR38400-744K4
Total capacity512 GB (4 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the ASUS RS720-E11-RS24U server board require all 24 DDR5 slots to be populated for this 512GB kit to function?

The kit provides four 128GB modules; the RS720-E11-RS24U supports up to 24 DIMMs, so you can install this kit in the appropriate channels without filling every slot.

If I keep existing DDR5 4800 RDIMMs in the same server, will the new 4Rx4 modules run at the same CL40 timing?

The board will train all installed DDR5 4800 RDIMMs to a common speed and latency; matching CL40 on the new modules helps maintain uniform timing across channels.

After installation, how can I verify each 128GB module is recognised as 4Rx4 ECC registered memory?

Check the BIOS memory configuration or OS tools such as dmidecode; each DIMM should report 128GB, DDR5 4800, 4Rx4, ECC registered, and 1.10V operation.

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