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Two green DDR5 RDIMM modules, 288-pin, no heat spreader, 256GB kit

NEMIX RAM

NEMIX RAM DDR5 256GB (2x128GB) 4800MHz ECC RDIMM 2Rx4 CL40 1.1V Supermicro H14DSG-O-CPU

SKU CH-4M0C-Q3V0P

256GB DDR5 ECC registered RDIMM kit (2x128GB) at 4800MHz CL40 1.1V, verified for Supermicro H14DSG-O-CPU

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes

Size 256GB 2X128GB

Show 30 more configurations
  • 256 GB total capacity from two 128 GB modules for dense server workloads
  • DDR5 4800 speed delivers PC5-38400 bandwidth for high-throughput applications
  • Registered ECC design corrects single-bit errors and stabilises fully populated channels
  • CL40 latency at 1.1 V balances responsiveness with enterprise power efficiency
  • Verified fit for Supermicro H14DSG-O-CPU using 288-pin RDIMM form factor

Exact-match DDR5 RDIMM kit

This NEMIX RAM kit delivers 256GB (2 x 128GB) of DDR5-4800 ECC Registered memory built to the precise rank, voltage and timing the Supermicro H14DSG-O-CPU memory controller expects. The 2Rx4 organization and CL40 latency let the board recognize full capacity at rated speed without manual tuning.

288-pin Registered form factor

The modules use the 288-pin RDIMM form factor this motherboard requires, not UDIMM or SODIMM. Registered architecture offloads the memory controller so every populated slot runs at full capacity while ECC corrects single-bit errors on the fly to prevent silent data corruption.

1.10V operation without heat spreaders

Running at 1.10V keeps power draw low in dense server configurations where multiple kits fill every channel. The modules ship without heat spreaders, relying on chassis airflow to maintain stable temperatures under sustained enterprise workloads.

Highlights

  • 256 GB total capacity from two 128 GB modules for dense server workloads
  • DDR5 4800 speed delivers PC5-38400 bandwidth for high-throughput applications
  • Registered ECC design corrects single-bit errors and stabilises fully populated channels
  • CL40 latency at 1.1 V balances responsiveness with enterprise power efficiency
  • Verified fit for Supermicro H14DSG-O-CPU using 288-pin RDIMM form factor

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR38400-724K2
Capacity256GB (2 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 2X128GB DDR5 4800MHz PC5-38400 2Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 1.1V DDR5 4800MHz CL40 modules throttle or error out during 24/7 server workloads?

The RDIMM registered buffer offloads the memory controller so every slot runs fully populated at rated speed while ECC corrects single-bit errors on the fly, preventing silent corruption during sustained use.

How much heat and power will the 2x128GB kit add to a fully loaded Supermicro H14DSG-O-CPU chassis?

Each module operates at 1.1V without a heat spreader; registered buffering reduces electrical load on the CPU memory controller, keeping thermals and draw low enough for standard server airflow.

Does the Supermicro H14DSG-O-CPU motherboard need a specific BIOS version or CPU stepping to recognise the 256GB 2Rx4 kit?

The kit is spec-matched to the board's 288-pin RDIMM slots and population rules; consult the motherboard manual for supported capacities, approved DIMM order, and any required firmware updates before installation.

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