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Eight green DDR5 RDIMM modules with black chips, no heat spreaders, 288-pin, 1.1V

NEMIX RAM

NEMIX RAM MR38400-744K8 1TB (8×128GB) DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-661W-H6TGQ

Eight 128 GB DDR5 RDIMMs deliver 1 TB of registered ECC memory at 4800 MT/s for Supermicro CloudDC servers

  • Capacity1TB (8 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 1TB total capacity across 8 DDR5 modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Validated for Supermicro CloudDC SuperServer systems

1 TB DDR5-4800 ECC RDIMM kit

This 1 TB kit contains eight 128 GB registered DDR5 modules rated at 4800 MT/s with CL40 latency and 1.1 V operation. It is built for Supermicro CloudDC SuperServer systems such as the SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R. ECC and registered buffering protect data integrity in continuous server workloads.

Who this suits and who it does not

Suits administrators expanding memory in the listed Supermicro platforms where 288-pin DDR5 RDIMM slots are populated in matched sets. Not for desktop motherboards, laptops or workstations that require unbuffered UDIMM or SO-DIMM form factors, or for systems limited to lower capacities per slot.

The spec that decides fit

The module uses a 288-pin DDR5 RDIMM interface with 4Rx4 organisation and registered buffering; the motherboard must support this exact pin-out, voltage and rank configuration for the kit to function.

Highlights

  • 1TB total capacity across 8 DDR5 modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Validated for Supermicro CloudDC SuperServer systems

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K8
Capacity1TB (8 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 Content1TB (8X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 4800 MT/s DDR5 modules throttle under sustained server workloads?

The kit runs at DDR5 4800 with CL40 latency and 1.10 V, so sustained throughput is limited by that rated speed and timing rather than thermal throttling.

How much heat and power should I expect from eight 128 GB registered DIMMs running continuously?

Eight 4Rx4 RDIMMs at 1.10 V draw modest power for DDR5 and have no heat spreaders, so airflow across the 288-pin slots is the main cooling requirement.

Which Supermicro SuperServer models must I already own for this 1 TB kit to be compatible?

The memory is validated for SuperMicro CloudDC SuperServer SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R systems.

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