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Two green DDR5 RDIMM sticks, 288-pin, no heat spreader

NEMIX RAM

NEMIX RAM RS520A-E12-RS12U 256GB (2x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-VFMQ-6PBX7 MPN RS520A-E12-RS12U

Adds 256 GB of DDR5 4800 ECC registered memory in two 128 GB modules for the ASUS RS520A-E12-RS12U server

  • Capacity256GB (2 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces power draw
  • Validated for ASUS RS520A-E12-RS12U 2U server compatibility

System-Specific DDR5 Server Memory

This 256 GB kit provides two 128 GB DDR5 4800 registered ECC RDIMMs built for the ASUS RS520A-E12-RS12U 2U server. The modules operate at 1.1 V with CL40 latency and a 4Rx4 organisation using major OEM DRAM. They are validated for the named platform to ensure stability in mission-critical workloads.

For Single-Socket ASUS 2U Server Upgrades

The kit suits administrators expanding memory in the specified ASUS single-socket 2U model where registered ECC DDR5 is required. It is not for desktop motherboards, consumer laptops, or any system that accepts only unbuffered non-ECC memory or a different DDR generation.

Registered ECC DDR5 with 4Rx4 Organisation

The registered buffer and on-die ECC protect data integrity under sustained server loads, while the 4Rx4 rank structure delivers high density per slot. Compatibility is limited to platforms qualified for this exact registered DDR5 configuration.

Points forts

  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces power draw
  • Validated for ASUS RS520A-E12-RS12U 2U server compatibility

Caractéristiques

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K2
Capacity256GB (2 x 128GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASUS
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (2X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions sur cet article

Will this 256GB DDR5 4800 kit work in my ASUS RS520A-E12-RS12U server?

Yes, the kit is built for that exact model. It provides two 128GB registered ECC RDIMMs at 1.1V with CL40 timing.

Can I mix these 4Rx4 modules with existing 2Rx4 DDR5 RDIMMs in the same server?

Mixing different rank configurations is not recommended; the motherboard typically requires identical rank layouts per channel for stable operation.

How do I verify the memory is running at DDR5 4800 with ECC active after installation?

Check the BIOS memory information screen — it should show 4800 MT/s, CL40, 1.1V and ECC enabled for each 128GB module.

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