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Eight bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-ZEZJ-QE638 MPN RS520A-E12-RS12U

256 GB DDR5 4800 ECC registered server kit with eight 32 GB modules at CL40 and 1.1 V for the ASUS RS520A-E12-RS12U 2U server

  • Capacity256GB (8 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB total capacity across eight 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM protects data integrity in critical systems
  • Low 1.1 V operation reduces power draw per module
  • Validated for ASUS RS520A-E12-RS12U 2U single-socket server

256GB DDR5 ECC RDIMM Kit

This 256GB kit contains eight 32GB DDR5 4800 CL40 registered DIMMs built for the ASUS RS520A-E12-RS12U single-socket 2U server. ECC and registered buffering protect data integrity under sustained enterprise workloads.

Upgrade from lower-capacity DDR5

Replacing smaller DDR5 modules with this 8x32GB kit fills all twelve slots in the RS520A-E12-RS12U, raising total memory to 256GB. The jump is worth it when virtualization, database or analytics jobs exceed the capacity of a partial population.

Handles large VM fleets and in-memory databases

At 256GB the kit comfortably runs dozens of virtual machines or sizable in-memory datasets. Workloads that grow beyond this ceiling will require a platform with higher per-socket memory limits.

Highlights

  • 256 GB total capacity across eight 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM protects data integrity in critical systems
  • Low 1.1 V operation reduces power draw per module
  • Validated for ASUS RS520A-E12-RS12U 2U single-socket server

Specifications

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-314K8
Capacity256GB (8 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 Content256GB (8X32GB) DDR5 4800MHZ PC5-38400 1Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these 288-pin DDR5 RDIMMs fit the ASUS RS520A-E12-RS12U 2U server chassis?

Yes, the kit is built for the ASUS RS520A-E12-RS12U single-socket 2U server and uses the standard 288-pin DDR5 RDIMM form factor that matches the motherboard slots.

What is the correct way to populate the eight 32 GB modules in the RS520A-E12-RS12U, and what step is often missed?

Follow the motherboard manual’s population order for 1Rx4 registered DIMMs; the step most often missed is seating each module until both ejector clips click shut.

When should the 1.1 V DDR5 4800 CL40 ECC registered modules be replaced?

Replace a module if the server logs uncorrectable ECC errors or if a BIOS memory diagnostic fails; otherwise the modules are rated for continuous server operation.

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