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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

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

SKU CH-Z1XN-8NR1N

128 GB DDR5 ECC registered server kit, four 32 GB modules at 4800 MT/s CL40, validated for SuperMicro UP SuperServer SYS-111C-NR and SYS-521C-NR

  • 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 kit expands server capacity for heavy workloads
  • Four 32 GB modules populate all channels for balanced throughput
  • DDR5 4800 speed delivers high bandwidth at 1.1 V
  • ECC registered design corrects errors to protect data integrity
  • Validated for SuperMicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F systems

128GB DDR5 ECC RDIMM Kit for Supermicro Servers

This 128GB kit contains four 32GB DDR5 4800 registered ECC modules built for Supermicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems. It targets administrators who need maximum registered memory capacity on X13SEDW-F motherboards for virtualization or database workloads.

Installation Notes for 288-Pin Registered Modules

Modules are 288-pin RDIMMs that install in standard DDR5 server slots; the registered buffer adds a slight insertion force compared to unbuffered DIMMs. Common issues include failing to seat all four modules fully or mixing ranks across channels, which prevents the system from posting.

Pre-Order Checklist for X13SEDW-F Platforms

Verify the motherboard is revision X13SEDW-F and that the BIOS supports 1Rx4 4800MT/s registered ECC at 1.1V before ordering. Confirm the chassis has enough DIMM slots for a four-module population and that existing memory matches the 1Rx4 rank structure to avoid training failures.

How it compares

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

Price $3,360.99
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 $26.26 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 numberMR38400-314K4
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

How do I confirm the kit is running at DDR5 4800 with CL40 after installation?

Check the BIOS or a tool like CPU-Z — it should report 4800 MT/s, CL40 timings and 1.10 V on all four modules

What exactly ships in the package and is anything else required?

The box contains four 32 GB 288-pin DDR5 RDIMM modules for a total of 128 GB; no extra parts are needed for installation

Which capacity or version should I pick for a SuperMicro SYS-111C-NR or SYS-521C-NR?

This 128 GB (4 x 32 GB) DDR5 4800 ECC RDIMM kit matches the qualified configuration for those SuperMicro systems

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