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Two green DDR5 RDIMM modules, no heat spreaders, gold contacts, 288 pins each

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR5 4800 ECC RDIMM CL40 1.1V 288-Pin memory upgrade

SKU CH-K4SB-S8X4K

32 GB DDR5 ECC registered server memory kit, two 16 GB modules at 4800 MT/s CL40 1.1 V for Supermicro GPU SuperServer systems

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 32GB capacity for demanding server workloads
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 1V operation reduces power consumption
  • Validated for SuperMicro GPU SuperServer systems

Server memory kit

This NEMIX RAM kit delivers 32 GB of DDR5 4800 registered ECC memory in a matched pair of 16 GB modules. It is built for Supermicro GPU SuperServer models such as the SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT.

ECC and registered operation

The modules run at 1.1 V with a CAS latency of 40 and use a 1Rx8 organisation. ECC and registered buffering protect data integrity and reduce electrical load on the server memory controller.

288-pin RDIMM installation

Each stick fits a standard 288-pin DDR5 RDIMM slot; alignment keys prevent mis-insertion. Common issues arise when mixing ranks or speeds across channels, so populate identical slots per the motherboard manual.

How it compares

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

Price $885.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $27.69 per GB
Pricier than about 77% 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 numberMR38400-618K2
Total capacity32 GB (2 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items32 GB (2 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 1Rx8 DDR5 RDIMMs need replacement under sustained server load?

The modules are rigorously stress tested under load to ensure reliability for mission‑critical environments.

What limit appears first when running DDR5 4800 at CL40 continuously?

The registered buffer and ECC logic maintain signal integrity at the rated 4800 MT/s, so the JEDEC‑defined speed and latency ceiling is the first bound.

How much heat and power do the 1.1 V modules produce all day?

Each DIMM operates at 1.10 V without a heat spreader, relying on server chassis airflow for thermal management.

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