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Four green DDR5 UDIMM modules in a kit

NEMIX RAM

NEMIX RAM 128GB (4×32GB) DDR5 4800 CL40 1.1V 2Rx8 UDIMM SuperMicro SYS-531AD-I C9Z790-CG

SKU CH-X4DE-9FED1

A 128GB kit of four 32GB DDR5 4800 CL40 1.1V 2Rx8 unbuffered UDIMM modules validated for SuperMicro SYS-531AD-I C9Z790-CG systems

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 128GB 4X32GB

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • Low 1.1 V operating voltage for efficient power draw
  • CL40 CAS latency with 2Rx8 dual-rank organisation
  • Validated for SuperMicro SYS-531AD-I and C9Z790-CG systems

System-Specific DDR5 Kit

This 128 GB kit contains four 32 GB DDR5 UDIMMs built for the SuperMicro SYS-531AD-I C9Z790-CG workstation. It targets IT professionals and builders who need a validated, plug-in memory upgrade for that exact platform.

4800 MT/s CL40 at 1.1 V

The modules run at DDR5 4800 (PC5-38400) with a CAS latency of 40 and a default voltage of 1.10 V. That speed and voltage combination is the single spec that determines whether the kit will operate correctly in the qualified system.

Sustained-Load Stability

Every module is stress-tested under continuous load before shipment to verify error-free operation during long render, compile or virtualisation sessions. The 2Rx8 unbuffered design maintains consistent throughput without the latency overhead of registered DIMMs.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • Low 1.1 V operating voltage for efficient power draw
  • CL40 CAS latency with 2Rx8 dual-rank organisation
  • Validated for SuperMicro SYS-531AD-I and C9Z790-CG systems

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro DDR5 4800MHZ Non-ECC Unbuffered UDIMM
Part NumberMD38400-328K4
Capacity128GB (4 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemSupermicro
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 UDIMM
Rank2Rx8
FeaturesDDR5 Non-ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (4X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Other versions of this model

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Questions about this item

Will the DDR5 4800 speed and CL40 latency run at full rate on the SuperMicro SYS-531AD-I C9Z790-CG?

The kit is validated for the SYS-531AD-I C9Z790-CG, so the four 32 GB modules will operate at DDR5 4800 with CL40 timings on that platform.

Does the PC5-38400 rating limit bandwidth on the C9Z790-CG motherboard?

PC5-38400 is the peak transfer rate of DDR5 4800; the C9Z790-CG memory controller supports that rate, so the full bandwidth is available.

Will the 288-pin UDIMM modules fit the four DIMM slots on the SYS-531AD-I?

Yes, each 288-pin DDR5 UDIMM matches the desktop DIMM slots on the SYS-531AD-I, and the kit provides four modules for a full 128 GB population.

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