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Four green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 64GB (4x16GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-P307-8VFK5 MPN RS520A-E12-RS24U

A 64GB kit of four 16GB DDR5 4800 ECC registered RDIMM modules built for the ASUS RS520A-E12-RS24U server

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB kit expands server memory capacity
  • DDR5 4800 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for ASUS RS520A-E12-RS24U 2U server

Server-grade DDR5 ECC RDIMM kit

This 64GB kit contains four 16GB registered DDR5 modules built for the ASUS RS520A-E12-RS24U 2U server. It delivers error-correcting memory for mission-critical workloads in a single-socket platform. IT professionals select it when data integrity and validated compatibility are mandatory.

Registered DDR5 4800 with CL40 latency

Each module runs at DDR5 4800 (PC5-38400) with a CAS latency of CL40 at 1.10V. The 1Rx8 organisation and registered buffer reduce electrical load on the memory controller. This exact speed, voltage and latency combination is the specification that determines whether the kit matches the server's qualified vendor list.

Tool-free DIMM installation with population rules

The 288-pin RDIMMs seat vertically in the server's memory slots without tools; the kit ships as a matched set of four. Installation fails when modules are mixed with unbuffered or non-ECC DIMMs, or when the population sequence in the service manual is ignored. Buyers who need unregistered memory or consumer DDR5 speeds cannot use this kit.

How it compares

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

Price $1,622.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $25.36 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 numberMR38400-618K4
Total capacity64 GB (4 × 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 items64 GB (4 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What does the DDR5 4800 speed rating mean once the modules are installed in the ASUS RS520A-E12-RS24U server?

The modules will run at 4800 MT/s, delivering PC5-38400 bandwidth per module for registered ECC workloads on this specific platform.

How does the 288-pin RDIMM interface affect usable capacity and registration in this server?

The 288-pin DDR5 RDIMM interface provides registered buffering and on-die ECC, allowing the 64GB kit to operate as four 1Rx8 ranks per channel.

What physical slot requirements must the RS520A-E12-RS24U meet to accept this 4-module kit?

The server needs four available 288-pin DDR5 RDIMM slots to install the four 16GB modules included in this kit.

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