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Six green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 1.1V ECC RDIMM 288-pin SuperMicro SYS-821GE-TNHR memory upgrade

SKU CH-XGB7-RXYJV

Six 128 GB DDR5 registered ECC modules at 4800 MT/s CL40 1.1 V for SuperMicro SYS-821GE-TNHR servers

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity from six 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM detects and corrects data errors
  • Low 1.1 V operating voltage reduces power draw
  • Qualified for SuperMicro SYS-821GE-TNHR GPU SuperServer

Capacity and configuration

This kit delivers 768GB of DDR5 memory across six 128GB registered DIMMs. It is built for the Supermicro GPU SuperServer SYS-821GE-TNHR and similar enterprise platforms that require high-density ECC RDIMMs.

Upgrade path

The modules replace lower-capacity DDR5 RDIMMs or fill empty slots to reach the system's maximum supported memory. The jump is worthwhile when workloads such as virtualisation, large databases or GPU compute demand more addressable memory than the current configuration provides.

Suitable buyers

This kit suits IT teams scaling memory in the named Supermicro server for memory-intensive server tasks. Buyers needing consumer desktop memory, non-ECC modules, different speeds or capacities not matching this 6x128GB kit should look elsewhere.

How it compares

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

Price $25,060.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $32.63 per GB
Pricier than about 90% 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 numberMR38400-744K6
Total capacity768 GB (6 × 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 items768 GB (6 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will six 288-pin DDR5 RDIMMs fit the SuperMicro SYS-821GE-TNHR memory slots?

The kit provides six 128 GB modules built to the 288-pin DDR5 RDIMM form factor specified for the SuperMicro SYS-821GE-TNHR.

What is the correct order for populating the six DDR5 4800 CL40 RDIMM slots on the SYS-821GE-TNHR?

Follow the motherboard manual's channel population sequence; install the registered ECC modules in the designated slots so each channel receives identical 4Rx4 1.10 V DIMMs.

When should the 1.10 V DDR5 ECC registered modules be replaced in a SuperMicro GPU SuperServer?

Replace modules if memory diagnostics report uncorrectable ECC errors or if the system logs repeated corrected errors that exceed your stability threshold.

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