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Eight green DDR5 RDIMM sticks with black chips in a row

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM SuperMicro SYS-221HE memory upgrade

SKU CH-3V60-ZW06K

1TB DDR5 4800 ECC registered server memory kit with eight 128GB modules for SuperMicro SYS-221HE systems

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB kit (8 × 128 GB) maximises SuperMicro SYS-221HE capacity
  • DDR5 4800 MT/s PC5-38400 bandwidth feeds data-intensive workloads
  • ECC registered 4Rx4 design corrects errors for mission-critical uptime
  • 1 V operation reduces power draw per module
  • Validated with Samsung, Micron and Hynix chips for proven reliability

Target system and capacity

This 1 TB memory kit contains eight 128 GB DDR5 RDIMM modules built for the SuperMicro IOT SuperServer SYS-221HE series. The registered ECC design targets enterprise workloads that demand data integrity and maximum density per DIMM slot.

Registered ECC and chip sourcing

Registered buffering and on-die ECC protect against soft errors in mission-critical deployments. Modules draw from major OEM Samsung, Micron or Hynix die to meet the validated configuration for the qualified SuperMicro platforms.

DDR5 4800 CL40 at 1.1 V

The kit runs at DDR5 4800 (PC5-38400) with CL40 latency and 1.10 V operation. This speed and voltage combination is the single specification that determines compatibility with the supported SuperMicro 221HE motherboards.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $28,193.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $28.19 per GB
Pricier than about 79% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K8
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items1 TB (8 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Do the 128GB modules need any periodic maintenance or replacement once installed?

No, the DDR5 ECC RDIMM modules have no moving parts and require no scheduled maintenance or replacement under normal server operation.

Will the CL40 latency or 1.1V voltage become the limiting factor during sustained workloads?

The CL40 timing and 1.1V operating voltage are fixed JEDEC specifications; sustained throughput is limited by the DDR5 4800 transfer rate, not by latency or voltage headroom.

How much heat and power do the eight 4Rx4 modules generate when the server runs continuously?

Each 128GB module operates at 1.1V within standard DDR5 4800 power envelopes; the registered 4Rx4 design adds minimal overhead, so total heat output matches typical 1TB RDIMM configurations.

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