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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 ECC RDIMM CL40 1.1V 288-pin memory upgrade

SKU CH-GQEJ-4HP9Z

A 64 GB DDR5 registered ECC kit of four 16 GB modules running at 4800 MT/s with CL40 latency and 1.1 V operation, validated for Supermicro SYS-221HE servers

  • Capacity64GB (4 x 16GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 64 GB total capacity from four 16 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Validated for Supermicro IOT SuperServer 221 series

DDR5 4800 ECC RDIMM kit

This 64 GB kit contains four 16 GB DDR5 4800 registered DIMMs with ECC and a CL40 latency at 1.1 V. It is built for Supermicro IOT SuperServer SYS-221HE-FTNR, SYS-221HE-FTNRD and SYS-221HE-TNR platforms.

Registered memory for server boards

Each module is a 1Rx8 288-pin RDIMM that requires a motherboard with registered DDR5 slots and ECC support. The registered buffer reduces electrical load on the memory controller, allowing the four-module population without additional buffering hardware.

Upgrade from non-ECC or lower-capacity DDR5

The jump is worth it when the workload demands error correction and 64 GB total capacity in a four-slot configuration. It does not suit systems that accept only unbuffered UDIMMs or boards limited to lower memory speeds.

Highlights

  • 64 GB total capacity from four 16 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Validated for Supermicro IOT SuperServer 221 series

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-618K4
Capacity64GB (4 x 16GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemSupermicro
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank1Rx8
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content64GB (4X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How does the CL40 latency affect sustained throughput in a Supermicro SYS-221HE-FTNR?

CL40 at DDR5 4800 sets the baseline cycle delay for every read or write; ECC and registered buffering add one cycle each, so sustained bandwidth is governed by the 4800 MT/s data rate and 1Rx8 organisation rather than latency alone.

What thermal behaviour should I expect from the bare modules during continuous operation?

Without a heat spreader the modules rely on chassis airflow; registered DDR5 at 1.1 V typically runs warm but within JEDEC limits when the server fans maintain spec flow across the DIMM slots.

Which motherboard feature must already be present for this kit to function?

The board must provide 288-pin DDR5 RDIMM slots with registered ECC support; the Supermicro SYS-221HE-FTNR, SYS-221HE-FTNRD and SYS-221HE-TNR platforms listed in the compatibility data meet that requirement.

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