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Sixteen green DDR5 RDIMM modules in a tray

NEMIX RAM

NEMIX RAM RS720A-E12-RS12 512GB (16x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-6RPW-Q9PP1 MPN RS720A-E12-RS12

A 512GB DDR5 ECC registered server memory kit containing sixteen 32GB modules at 4800MHz CL40 1.1V for ASUS RS720A-E12-RS12

  • Total capacity512 GB (16 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512GB total capacity scales demanding server workloads with 16 modules of 32GB each
  • DDR5 4800 speed delivers high bandwidth at PC5-38400 for data-intensive applications
  • ECC registered design detects and corrects errors to maintain data integrity under load
  • 1V operation reduces power draw across all 16 DIMMs in dense configurations
  • Validated for ASUS RS720A-E12-RS12 2U dual-processor server ensures drop-in compatibility

Target system and capacity

This 512 GB kit contains sixteen 32 GB DDR5 RDIMMs built for the ASUS RS720A-E12-RS12 2U dual-processor server. The modules are registered and ECC-enabled to meet enterprise stability requirements.

Registered ECC and single-rank layout

Registered buffering and on-die ECC protect data integrity under sustained workloads. A 1Rx4 organisation keeps each module at a single rank, allowing the memory controller to address all sixteen modules without exceeding rank limits.

DDR5 4800 electrical constraints

The DDR5 4800 interface runs at 1.10 V with a CAS latency of CL40. Bandwidth and latency are fixed by the JEDEC PC5-38400 standard, so the kit cannot exceed these timing or voltage parameters.

How it compares

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

Price $13,122.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (16 × 32 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $25.63 per GB
Pricier than about 70% 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 numberMR38400-314K16
Total capacity512 GB (16 × 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 items512 GB (16 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 16 registered DIMMs need any firmware updates or scheduled replacement in a 2U server?

The DDR5 4800 CL40 1Rx4 modules are validated for the ASUS RS720A-E12-RS12 and run at 1.10 V with ECC; no firmware updates or planned replacement intervals are required.

What limit appears first when all 512 GB run at DDR5 4800 continuously?

The CL40 latency at PC5-38400 sets the throughput ceiling; sustained load hits that timing boundary before any voltage or thermal constraint.

How much heat and noise do the 288-pin RDIMMs add when the server runs all day?

Bare modules without heat spreaders operate at 1.10 V, so they add minimal heat and no audible noise; system fans handle the thermal load.

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