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Four green DDR5 RDIMM sticks, bare chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4×64GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Server Memory Upgrade

SKU CH-TGJ0-SKGQE

256 GB kit of four 64 GB DDR5 4800 CL40 ECC registered DIMMs at 1.1 V for SuperMicro servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB kit (4 × 64 GB) scales server memory capacity
  • DDR5 4800 MT/s delivers high bandwidth for GPU workloads
  • ECC registered design protects data integrity in critical tasks
  • 10 V operation reduces power draw per module
  • Validated for SuperMicro SYS-821GE-TNHR, SYS-821GV-TNR, SYS-421GE-TNRT

256 GB DDR5-4800 ECC RDIMM Kit

This kit delivers 256 GB of registered ECC DDR5 memory across four 64 GB modules running at 4800 MT/s with CL40 latency. It is built for SuperMicro GPU SuperServer platforms such as the SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT where maximum capacity and error correction are required.

Registered ECC with 2Rx4 organisation

The modules use a 2Rx4 layout and registered buffering to reduce electrical load on the memory controller, allowing all four DIMMs to operate reliably at the rated 1.10 V. ECC circuitry detects and corrects single-bit errors, protecting data integrity in continuous workloads.

Four 64 GB modules fill four slots

Populating four DIMM slots provides 256 GB total capacity, suitable for large virtual-machine fleets, in-memory databases and GPU-accelerated compute. Systems needing more memory than four slots can supply must use higher-density DIMMs or a different platform.

How it compares

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

Price $6,693.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.15 per GB
Pricier than about 72% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (4 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules require any periodic reseating or cleaning in a SuperMicro server?

No reseating or cleaning is required; the registered ECC modules are solid-state components with no moving parts and no heat spreader to trap dust.

What limits sustained throughput first — the CL40 latency or the DDR5 4800 bus speed?

The DDR5 4800 (PC5-38400) bus speed is the primary throughput ceiling; CL40 latency affects response time, not peak bandwidth.

How much heat and power does the 256 GB kit draw when running continuously at 1.1 V?

Each 64 GB module operates at 1.10 V with no heat spreader, so total power draw stays low and passive chassis airflow is sufficient for all-day operation.

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