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Four green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-QV5W-T0EW2 MPN RS520A-E12-RS24U

128 GB DDR5 ECC registered server memory kit, four 32 GB modules at 4800 MT/s CL40 1.10 V for ASUS RS520A-E12-RS24U

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128GB capacity across four 32GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Validated for ASUS RS520A-E12-RS24U server

System-specific DDR5 ECC kit

This 128 GB kit contains four 32 GB DDR5 4800 registered DIMMs built for the ASUS RS520A-E12-RS24U server. Each module runs at 1.10 V with CL40 latency and uses 1Rx4 organisation. The memory is ECC RDIMM type with 288 pins and carries no heat spreader.

Compatibility and limitations

The kit is validated only for the named ASUS single-socket 2U server model. Systems that require unbuffered UDIMMs, non-ECC memory, lower speeds, different pin counts or higher capacities per module cannot use this kit. Buyers needing consumer desktop memory or laptop SO-DIMMs should look elsewhere.

Registered ECC RDIMM form factor

Registered ECC RDIMM is the single specification that determines fit; the motherboard must accept 288-pin DDR5 RDIMMs with on-board register and ECC support. Without that requirement the modules will not function.

Highlights

  • 128GB capacity across four 32GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Validated for ASUS RS520A-E12-RS24U server

Specifications

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-314K4
Capacity128GB (4 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 Content128GB (4X32GB) DDR5 4800MHZ PC5-38400 1Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does this kit use the DDR5 4800 (PC5-38400) standard and what does that mean for speed?

The kit runs at DDR5 4800 with a PC5-38400 rating and CL40 latency, providing 4800 MT/s data transfer per module.

What physical slot and form factor do these modules need to fit the ASUS RS520A-E12-RS24U server?

Each module is a 288-pin DDR5 RDIMM measuring standard DIMM height; the server requires four such slots populated for this 4x32GB kit.

How are these registered ECC modules installed, and what step is often missed?

Power down, open the chassis, align the notch on each 288-pin RDIMM with the slot key, press firmly until both latches click, then verify all four modules are recognised in BIOS.

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