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Green rectangular circuit board with gold edge connector and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM RS720A-E12-RS12 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-K979-KDC9J MPN RS720A-E12-RS12

128 GB DDR5-4800 ECC registered RDIMM, CL40 1.1 V, single 288-pin module for ASUS RS720A-E12-RS12 servers

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB DDR5 capacity supports heavy virtualization workloads
  • 4800 MT/s speed with CL40 latency delivers responsive server throughput
  • 1 V operation reduces power draw in dense chassis
  • 4Rx4 registered ECC architecture protects data integrity
  • 288-pin RDIMM form factor fits ASUS RS720A-E12-RS12 servers

Purpose-built server memory

This 128GB DDR5 module is engineered for the ASUS RS720A-E12-RS12 dual-processor server platform. It delivers registered ECC operation at 4800 MT/s with a CL40 latency and 1.10V voltage. The single 288-pin RDIMM uses a 4Rx4 organisation built from major OEM DRAM chips.

Suited for capacity-bound workloads

Administrators expanding memory in the named ASUS 2U server will find the module validated for that chassis. Systems requiring unbuffered DIMMs, non-ECC memory, lower-density sticks or a different pin count should look elsewhere. The registered design also prevents use in standard desktop motherboards.

Steady throughput under load

Registered buffering and on-die ECC maintain data integrity during sustained compute or virtualisation tasks. The 1.10V operating point helps keep power draw predictable when all slots are populated. Modules are stress tested under load before shipment to confirm stability in continuous operation.

Points forts

  • 128 GB DDR5 capacity supports heavy virtualization workloads
  • 4800 MT/s speed with CL40 latency delivers responsive server throughput
  • 1 V operation reduces power draw in dense chassis
  • 4Rx4 registered ECC architecture protects data integrity
  • 288-pin RDIMM form factor fits ASUS RS720A-E12-RS12 servers

Caractéristiques

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K1
Capacity128GB
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 Content128GB (1X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions sur cet article

Will this module fit the memory slots on my ASUS RS720A-E12-RS12 server?

Yes, it is a 288-pin DDR5 RDIMM built to the PC5-38400 standard for that exact model.

Can I add this 4Rx4 registered ECC stick to existing DDR5 RDIMMs in the same server?

It will operate alongside other DDR5 registered ECC modules at 4800 MT/s CL40, provided the platform supports mixed-rank population.

How do I verify the module is running at 4800 MT/s with ECC active after installation?

Check the BIOS memory information or OS tools such as dmidecode; they should report DDR5-4800, CL40, 1.10 V and ECC enabled.

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