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Twelve bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 1.5TB 12x128GB DDR5 4800 CL40 4Rx4 ECC RDIMM memory upgrade

SKU CH-QKD5-75Z41

1.5 TB registered DDR5 kit with twelve 128 GB modules at 4800 MT/s, CL40, 1.1 V, ECC, 4Rx4, for Supermicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F

  • Capacity1.5TB (12 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • Massive 1.5TB capacity via twelve 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • 4Rx4 organisation with CL40 latency at 1.1V
  • Validated for Supermicro SYS-111C-NR and SYS-521C-NR systems

1.5 TB DDR5 server kit

This 1.5 TB kit contains twelve 128 GB DDR5 4800 RDIMM modules built for Supermicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems. Registered ECC with 4Rx4 organisation provides the error correction and signal integrity required by enterprise workloads. The 1.1 V operating voltage matches the platform specification. It targets administrators scaling memory capacity on qualified Supermicro hardware.

Installation and common issues

Modules use the standard 288-pin DDR5 RDIMM form factor and seat in the server DIMM slots without tools. Populate all twelve slots according to the motherboard population guide to reach the full 1.5 TB capacity. The most frequent issue is mixing registered and unbuffered DIMMs or using a non-qualified motherboard, which prevents the system from posting. Verify the X13SEDW-F or listed SuperServer models before installation.

DDR5 4800 registered ECC limits

DDR5 4800 RDIMM bandwidth is capped at the PC5-38400 data rate and CL40 latency defined by the JEDEC standard for this speed grade. Registered buffering adds one cycle of command latency but enables the high module count and 4Rx4 density used here. Systems that do not support DDR5 registered ECC or that limit maximum rank per channel will not recognise the full kit. Capacity beyond 1.5 TB requires a platform with more memory channels or higher-density modules.

Highlights

  • Massive 1.5TB capacity via twelve 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • 4Rx4 organisation with CL40 latency at 1.1V
  • Validated for Supermicro SYS-111C-NR and SYS-521C-NR systems

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K12
Capacity1.5TB (12 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 Content1.5TB (12X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I verify the 12 DDR5 4800 CL40 4Rx4 ECC RDIMM modules are running at 1.10 V and registered mode after installation?

Enter the server BIOS or UEFI and confirm the memory information screen shows 1.5 TB total, 4800 MT/s speed, CL40 latency, 1.10 V voltage, ECC enabled and registered operation for all 12 slots.

What does the MR38400-744K12 kit contain and are any extra parts required for the SuperMicro SYS-111C-NR and SYS-521C-NR systems?

The kit contains twelve 128 GB 288-pin DDR5 RDIMM modules; no additional memory parts or heat spreaders are needed for the listed SuperMicro servers.

Should I choose the 12 x 128 GB 4Rx4 kit or a different capacity for the X13SEDW-F motherboard?

The 1.5 TB 12 x 128 GB 4Rx4 kit matches the maximum supported DIMM count and rank structure for the X13SEDW-F; select it when you need full capacity.

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