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Six green DDR5 RDIMM sticks with black chips no heat spreaders

NEMIX RAM

NEMIX RAM MR38400-744K6 768GB (6×128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-D7Q1-S672F

A 768 GB DDR5 server kit of six 128 GB registered ECC RDIMMs running at 4800 MT/s with CL40 latency, built for Supermicro CloudDC SuperServer platforms

  • Capacity768GB (6 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces server power draw
  • Validated for Supermicro CloudDC SYS-621C-TN12R and SYS-611C-TN4R

Capacity & form factor

This NEMIX RAM kit delivers 768 GB of DDR5 memory in six 128 GB RDIMM modules. Each stick is a 288-pin registered DIMM rated at 4800 MT/s with CL40 latency and 1.10 V operation. The 4Rx4 organisation and on-die ECC suit enterprise workloads that require maximum density per channel.

Who this suits

IT teams upgrading Supermicro CloudDC SuperServer models SYS-621C-TN12R, SYS-611C-TN4R or SYS-121C-TN2R will find a validated, plug-compatible population. Buyers needing unbuffered UDIMMs, lower voltages, or consumer desktop form factors cannot use this registered server memory.

Deciding specification

The registered RDIMM interface with ECC and 4Rx4 ranking is the single attribute that determines compatibility; only motherboards designed for registered DDR5 ECC modules at 4800 MT/s can accept this kit.

Highlights

  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces server power draw
  • Validated for Supermicro CloudDC SYS-621C-TN12R and SYS-611C-TN4R

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K6
Capacity768GB (6 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 Content768GB (6X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does each 128 GB DDR5 4800 CL40 RDIMM draw at 1.1 V under sustained load?

Each module operates at 1.1 V; total kit capacity is 768 GB across six 128 GB RDIMMs.

Which Supermicro platforms must the buyer already own for this 6×128 GB kit to be compatible?

Compatible systems listed are SuperMicro CloudDC SuperServer SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R.

Will these 288-pin DDR5 ECC RDIMMs work alongside existing DDR5 RDIMMs of different capacity or rank in the same server?

The kit uses 4Rx4 organisation at DDR5 4800 CL40; mixing ranks or capacities depends on the motherboard memory population rules.

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