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Four green DDR5 RDIMM sticks in antistatic tray

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-A4K7-SFA8A

128 GB DDR5 4800 ECC registered server kit with four 32 GB 1Rx4 modules at CL40 and 1.1 V for Supermicro X13SEW-TF and X13SEW-F motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered design detects and corrects single-bit errors
  • 1 V operating voltage reduces power draw per module
  • Qualified for Supermicro X13SEW-TF and X13SEW-F motherboards

128GB DDR5 ECC RDIMM kit

This 128GB kit contains four 32GB DDR5 4800 registered ECC modules. It is built for Supermicro X13SEW-TF and X13SEW-F motherboards that require registered memory with error correction. System integrators and IT teams use it to populate all four slots in a single validated configuration.

DDR5 4800 registered DIMM limits

The modules run at 4800 MT/s with a CAS latency of 40 and operate at 1.1V. Registered buffering adds one clock cycle to the command path, which is mandatory for the target platform. The 288-pin DDR5 form factor fits only DDR5 RDIMM slots; it will not seat in UDIMM, SODIMM or earlier DDR generations.

1Rx4 density and headroom

Each 32GB rank uses a 1Rx4 organisation, giving the kit a total of four ranks across four modules. This density suits virtualisation hosts and database nodes that need maximum capacity per channel. Workloads requiring higher frequencies, lower latencies or non-ECC operation fall outside this module's design envelope.

How it compares

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

Price $3,438.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.87 per GB
Pricier than about 74% 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 numberMR38400-314K4
Total capacity128 GB (4 × 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 items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I pick this 128GB kit of four 32GB modules or a smaller capacity for my SuperMicro X13SEW-TF?

The kit provides 128GB total across four 32GB RDIMMs, matching the board's DDR5 4800 registered ECC requirement; choose it when your workload needs that much capacity.

What does the 4800 MT/s rating deliver once installed in the server?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.10V, giving the rated throughput and error correction the platform expects.

How does the 288-pin RDIMM interface limit performance on this motherboard?

The registered 288-pin DDR5 form factor caps operation to the platform's supported DDR5 4800 speed and requires ECC registered memory, which this kit supplies.

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