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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 384GB (12x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade for RS520A-E12-RS12U

SKU CH-3RK5-QNZSD MPN RS520A-E12-RS12U

A 384 GB registered DDR5 kit with twelve 32 GB ECC modules at 4800 MT/s CL40 for the ASUS RS520A-E12-RS12U server

  • Capacity384GB (12 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 384 GB total capacity across 12 modules of 32 GB each
  • DDR5 4800 speed with PC5-38400 bandwidth for server workloads
  • ECC registered RDIMM design protects data integrity under load
  • CL40 CAS latency at 1.1 V voltage for efficient operation
  • 288-pin 1Rx4 configuration validated for ASUS RS520A-E12-RS12U

Capacity and compatibility

This 384GB kit contains twelve 32GB DDR5 modules built for the ASUS RS520A-E12-RS12U single-socket 2U server. Each module is a 288-pin ECC registered DIMM running at 4800 MT/s with CL40 latency at 1.10V. The 1Rx4 organisation and on-die ECC provide the data integrity required for mission-critical workloads.

Sustained load behaviour

Modules are stress tested under load to verify stability during extended server operations. The registered buffer reduces electrical loading on the memory controller, helping maintain consistent throughput when all twelve slots are populated. Operation at the standard 1.10V keeps power draw predictable inside the 2U chassis thermal envelope.

Upgrade scope and fit

This kit replaces lower-capacity DDR5 RDIMM sets or fills empty slots to reach the platform maximum. The jump is worthwhile when virtualisation density, in-memory databases or large dataset processing demand the full 384GB. It is not suited for workstations or consumer boards that accept only unbuffered memory.

Highlights

  • 384 GB total capacity across 12 modules of 32 GB each
  • DDR5 4800 speed with PC5-38400 bandwidth for server workloads
  • ECC registered RDIMM design protects data integrity under load
  • CL40 CAS latency at 1.1 V voltage for efficient operation
  • 288-pin 1Rx4 configuration validated for ASUS RS520A-E12-RS12U

Specifications

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-314K12
Capacity384GB (12 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASUS
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank1Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content384GB (12X32GB) DDR5 4800MHZ PC5-38400 1Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 1.10 V DDR5 RDIMM kit run hotter or louder than standard server memory under continuous load?

The modules operate at the standard DDR5 server voltage of 1.10 V with no heat spreader; thermal and acoustic behaviour matches the ASUS RS520A-E12-RS12U platform design for 4800 MT/s registered ECC DIMMs.

What must already be present in the ASUS RS520A-E12-RS12U for this 12-module kit to function?

The server needs all 12 DDR5 RDIMM slots free and a BIOS that supports 1Rx4 registered ECC DIMMs at 4800 MT/s; the kit itself contains every module required for the full 384 GB capacity.

Can I mix these CL40 1Rx4 modules with different-rank DDR5 RDIMMs already installed in the same server?

All 12 slots should be populated with identical 1Rx4 CL40 4800 MT/s registered ECC DIMMs to maintain the validated memory configuration for the RS520A-E12-RS12U.

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