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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 ECC RDIMM SuperMicro memory upgrade

SKU CH-9MM3-FNEXY

256 GB kit of two 128 GB DDR5 4800 ECC registered DIMMs for SuperMicro servers

  • Capacity256GB (2 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB capacity supports large server workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for SuperMicro SYS-111C-NR and SYS-521C-NR systems

System-specific DDR5 ECC kit

This NEMIX RAM kit delivers 256 GB of DDR5 4800 registered ECC memory in two 128 GB modules. It is built for Supermicro UP SuperServer SYS-111C-NR and SYS-521C-NR platforms as well as the X13SEDW-F motherboard. The modules run at 1.1 V with CL40 latency and a 4Rx4 organisation.

Registered ECC changes data integrity

The registered buffer and on-die ECC correct single-bit errors and reduce electrical load on the memory controller. This allows the Supermicro platform to populate all slots without signal degradation while protecting mission-critical workloads from silent data corruption. No heat spreaders are included, so airflow in the server chassis must handle thermal management.

288-pin RDIMM form factor fits qualified slots

Each module uses the standard 288-pin DDR5 RDIMM keying, ensuring mechanical compatibility only with DDR5 RDIMM slots on the listed Supermicro systems. Builders who need unbuffered UDIMMs, non-ECC memory, or a different capacity per module cannot use this kit. The two-module pack fills a matched pair for dual-channel operation on the supported boards.

Points forts

  • 256 GB capacity supports large server workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for SuperMicro SYS-111C-NR and SYS-521C-NR systems

Caractéristiques

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro 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 SystemSupermicro
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 the 4Rx4 modules on the X13SEDW-F motherboard require any firmware or BIOS updates down the line?

The kit is validated for SuperMicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems; follow the board vendor's BIOS release notes for any future memory-support updates.

What is the first limit reached when the 256GB kit runs at DDR5 4800 continuously?

The CL40 latency at 1.10V defines the stable operating point; sustained loads stay within the JEDEC DDR5 4800 specification without exceeding rated voltage.

How much heat do the two 128GB RDIMMs produce when the server runs all day?

Modules operate at 1.1V without heat spreaders; typical DDR5 RDIMM power at this voltage and speed keeps thermals within standard server airflow limits.

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