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Sixteen bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 256GB (16x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-JE1W-MNGNP MPN RS520A-E12-RS12U

256 GB kit of sixteen 16 GB DDR5 4800 CL40 ECC registered DIMMs for ASUS RS520A-E12-RS12U servers

  • 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 memory-intensive server workloads
  • 16 matched 16 GB modules ensure balanced channel population
  • DDR5 4800 MT/s with CL40 latency delivers high-throughput data access
  • ECC registered RDIMM architecture protects data integrity under load
  • 1 V operation reduces power draw in dense configurations

256GB DDR5 4800 ECC RDIMM Kit

This 256GB kit contains sixteen 16GB DDR5 4800 MT/s registered DIMMs with ECC and CL40 latency. It operates at 1.1V and uses the 288-pin RDIMM form factor for server motherboards. The modules are validated for the ASUS RS520A-E12-RS12U single-socket 2U server.

Suited for Full Population of 16 Slots

IT teams upgrading the ASUS RS520A-E12-RS12U to its maximum supported capacity with matching registered ECC modules will use this kit. Builders needing non-ECC UDIMMs, lower voltages, or consumer desktop memory should select a different product type.

1Rx8 Registered ECC Architecture

Each module is a single-rank 1Rx8 registered ECC RDIMM, a requirement for stability in the target server platform. Systems that require unbuffered memory or a different rank configuration cannot use these DIMMs.

How it compares

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

Price $6,807.99
Pricier than about 83% 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 $26.59 per GB
Pricier than about 73% 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

Should I pick the 16-module kit or a smaller capacity for my RS520A-E12-RS12U server?

The 256 GB kit provides 16 × 16 GB modules, filling all DDR5 slots in the ASUS RS520A-E12-RS12U for maximum registered ECC capacity at 4800 MT/s.

What does the 4800 MT/s rating deliver once the modules are installed?

The kit runs at DDR5-4800 (PC5-38400) with CL40 latency at 1.1 V, giving the server its rated memory bandwidth with registered ECC error correction.

How does the 288-pin DDR5 RDIMM interface limit performance in this system?

The registered 288-pin DDR5 RDIMM form factor caps the kit at DDR5-4800 CL40, matching the ASUS server's supported memory speed and registered buffer architecture.

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