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Two green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM DDR5 256GB (2x128GB) 4800 CL40 ECC RDIMM Supermicro H14SST-G memory upgrade

SKU CH-MEWJ-A8WXH

A 256 GB DDR5 ECC registered DIMM kit (2 × 128 GB) running at 4800 MHz CL40, validated for the Supermicro H14SST-G motherboard

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

Size 256GB 2X128GB

Nog 30 configuraties tonen
  • 256 GB total capacity with two 128 GB modules for full server density
  • DDR5 4800 speed rated at PC5-38400 for rated throughput
  • CL40 CAS latency and 1.1 V operation matching controller expectations
  • ECC registered RDIMM corrects single-bit errors and buffers every slot
  • 288-pin RDIMM form factor verified for Supermicro H14SST-G motherboard

256GB DDR5 ECC RDIMM kit for Supermicro H14SST-G

This 256GB kit contains two 128GB DDR5 registered ECC RDIMMs rated at 4800 MT/s with CL40 latency and 1.1V operation. It is built for the Supermicro H14SST-G motherboard and targets administrators who need maximum registered memory capacity in a dual-module configuration.

Verify board population rules

The H14SST-G requires 288-pin registered DDR5 RDIMMs and its manual defines specific population sequences for full-capacity operation. Confirm the approved DIMM order, maximum supported capacity per slot, and any BIOS version requirements in the system documentation before installing this 2Rx4 kit.

Replaces smaller RDIMM sets when full registered

This kit upgrades from lower-density registered modules to reach 256GB in two slots while keeping ECC and registered buffering active. The jump is worth it when workloads demand the full registered address range and single-bit error correction at the board's native DDR5-4800 speed.

Pluspunten

  • 256 GB total capacity with two 128 GB modules for full server density
  • DDR5 4800 speed rated at PC5-38400 for rated throughput
  • CL40 CAS latency and 1.1 V operation matching controller expectations
  • ECC registered RDIMM corrects single-bit errors and buffers every slot
  • 288-pin RDIMM form factor verified for Supermicro H14SST-G motherboard

Specificaties

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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What comes in the 256 GB kit and do I need anything else to install it?

The kit contains two 128 GB DDR5 4800 CL40 2Rx4 1.1 V 288-pin ECC registered RDIMMs. No extra cables, brackets or heat spreaders are required; the modules plug directly into the Supermicro H14SST-G DIMM slots.

Why choose the 256 GB 2x128 GB DDR5-4800 CL40 kit instead of a different capacity or speed?

This exact 2Rx4 registered ECC configuration at 1.1 V and CL40 matches the Supermicro H14SST-G memory-controller requirements, so the board recognises the full 256 GB at rated DDR5-4800 speed without down-clocking.

What does DDR5-4800 CL40 mean for real-world server throughput?

The modules transfer data at 4800 MT/s with a 40-cycle CAS latency, delivering the bandwidth and error-correction stability the H14SST-G platform expects for fully populated, mission-critical workloads.

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