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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 CL40 1Rx4 ECC RDIMM memory upgrade

SKU CH-SFX5-7JZ3J

A 64 GB dual-module DDR5 4800 kit with ECC registered RDIMMs built for Supermicro X13SEI boards

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64GB kit doubles server memory capacity using two 32GB modules
  • DDR5 4800 speed delivers high data throughput at PC5-38400 rating
  • ECC registered design detects and corrects errors for stable operation
  • 1V low voltage reduces power draw in dense configurations
  • Validated for SuperMicro X13SEI-F and X13SEI-TF motherboards

Capacity and compatibility

This NEMIX RAM kit provides 64GB of DDR5 memory in a matched pair of 32GB modules. It is built as registered ECC RDIMM for Supermicro X13SEI-F and X13SEI-TF motherboards. The 1Rx4 organisation and CL40 timing suit server and workstation workloads that require error correction.

Thermals and power

Each module runs at 1.1V without a heat spreader, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained operation. The low voltage helps contain power draw in dense configurations.

Build integration

The 288-pin DDR5 RDIMM form factor fits only boards that support registered ECC memory. Two populated slots leave remaining channels free for future expansion. Buyers who need unbuffered memory or consumer desktop compatibility cannot use this kit.

How it compares

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

Price $1,751.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.37 per GB
Pricier than about 76% 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 numberMR38400-314K2
Total capacity64 GB (2 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in the SuperMicro X13SEI-F and what step is often missed?

Power off the server, open the chassis, align each module's notch with the slot key, press firmly until both retention clips click, then verify in BIOS that both 32 GB modules are recognised at 4800 MT/s; the step often missed is seating the second module in the correct channel pair for dual-channel operation.

What maintenance or replacement will the ECC registered RDIMM kit need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; replacement is only necessary if a module fails, which is covered by the manufacturer's lifetime replacement warranty.

What limit appears first when the 1Rx4 CL40 kit runs sustained workloads at 1.1 V?

The primary limit is the CL40 latency at 4800 MT/s, which determines maximum sustained throughput; thermal throttling is unlikely because the registered design and 1.1 V operation keep temperatures low under continuous load.

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