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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 1.5TB (12x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-EQ69-RS1VQ MPN RS520A-E12-RS12U

1.5 TB server memory kit with twelve 128 GB DDR5 4800 CL40 ECC registered DIMMs at 1.1 V

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 5 TB total capacity for memory-intensive server workloads
  • 12 modules of 128 GB each simplify large-scale deployment
  • DDR5 4800 speed with CL40 latency delivers high throughput
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw in dense configurations

1.5 TB DDR5 ECC RDIMM kit

This kit provides twelve 128 GB DDR5 4800 registered DIMMs for a total of 1.5 TB. Each module operates at 1.1 V with CL40 latency and 4Rx4 organisation. The parts are validated for the ASUS RS520A-E12-RS12U single-socket 2U server.

Suited for high-capacity server upgrades

IT teams expanding memory in the named ASUS 2U server will match the required registered ECC specification. Builders using desktop boards, laptops or non-registered platforms cannot install these RDIMMs.

Registered ECC DDR5 4800 specification

The 288-pin RDIMM form factor with on-die ECC and registered buffering is the single attribute that decides compatibility. Only systems designed for DDR5 registered ECC memory at this speed and rank configuration will accept the kit.

How it compares

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

Price $46,234.99
Pricier than about 95% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $30.82 per GB
Pricier than about 88% 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 numberMR38400-744K12
Total capacity1.5 TB (12 × 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 items1.5 TB (12 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How can I confirm the 1.5TB kit is running at DDR5 4800 CL40 after installation?

Enter the server BIOS or use a tool such as CPU-Z to verify the memory speed reads 4800 MT/s and the CAS latency shows 40; the registered ECC modules will also report 1.10 V and 4Rx4 organisation.

What is included in the box and do I need any extra parts for the ASUS RS520A-E12-RS12U?

The package contains twelve 128 GB DDR5 288-pin RDIMMs totalling 1.5 TB; no additional memory components are required for the supported ASUS single-socket 2U server.

Which capacity version should I choose for the RS520A-E12-RS12U?

This kit provides the full 1.5 TB (12 × 128 GB) configuration validated for the ASUS RS520A-E12-RS12U; select it when you need the maximum supported memory for that platform.

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