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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 256GB (16x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-T43V-8BT26 MPN RS520A-E12-RS24U

256 GB DDR5 ECC registered server memory kit with sixteen 16 GB modules at 4800 MT/s CL40 for the ASUS RS520A-E12-RS24U

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity for high-density server workloads
  • 16 modules of 16 GB each populate all available slots
  • DDR5 4800 speed with PC5-38400 bandwidth for fast data throughput
  • ECC registered design with 1Rx8 organisation protects data integrity
  • Low 1.10 V operation reduces power draw and heat

Compatibility & Use Case

This 256GB DDR5 kit is built for the ASUS RS520A-E12-RS24U 2U server. Registered ECC modules protect data integrity in virtualisation, database and high-performance computing workloads. The 16-module configuration fills every slot for maximum capacity. Buyers needing non-ECC memory or consumer desktop speeds should look elsewhere.

Deciding Specification

The DDR5 4800 CL40 registered ECC RDIMM form factor determines fit. Only systems that accept 288-pin DDR5 RDIMMs at 1.1V with CL40 timing can use this kit. A motherboard limited to UDIMM, slower speeds or different voltage will not post with these modules.

How it compares

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

Price $6,297.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $24.60 per GB
Pricier than about 69% 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 numberMR38400-618K16
Total capacity256 GB (16 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.10V DDR5 4800 kit draw when the server runs continuously?

Each 16 GB module operates at 1.10 V DDR5 standard voltage; total draw depends on the ASUS RS520A-E12-RS24U memory controller and workload, not on the kit alone.

What must the ASUS RS520A-E12-RS24U already have to accept this 256 GB registered ECC kit?

The server needs 16 free 288-pin DDR5 RDIMM slots and a BIOS that supports 1Rx8 registered ECC modules at 4800 MT/s.

Will the 1Rx8 CL40 registered modules work alongside any existing DDR5 RDIMMs I keep in the same ASUS server?

Mixed ranks or latencies can prevent boot; populate all 16 slots with this matched 1Rx8 CL40 kit for guaranteed stability.

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