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Four green DDR5 RDIMM modules without heat spreaders in a kit

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 4x64GB CL52 1.1V 4Rx4 ECC RDIMM Supermicro X14SDW-64C-SP9F memory upgrade

SKU CH-8QHJ-WDYXZ

A 256 GB DDR5 6400 registered ECC kit in four 64 GB modules at 1.1 V and CL52, built for the Supermicro X14SDW-64C-SP9F motherboard

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 256GB 4X64GB

Show 4 more configurations
  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • Registered ECC design corrects errors and supports full population
  • 4Rx4 288-pin RDIMM form factor matches Supermicro X14SDW-64C-SP9F
  • Major OEM chips from Samsung Micron or Hynix ensure enterprise stability

256GB DDR5-6400 ECC RDIMM kit

This 256GB kit contains four 64GB DDR5-6400 registered ECC modules built for the Supermicro X14SDW-64C-SP9F motherboard. The 4Rx4 organisation, 1.1V operation and CL52 timing match the board's memory controller requirements so the full capacity is recognised at rated speed. It targets administrators who need maximum registered memory in a validated configuration.

Installation and population rules

The modules use the standard 288-pin RDIMM form factor and install like any registered DIMM, but the motherboard manual defines the approved slot order and maximum supported capacity per slot. Deviating from the documented population sequence can prevent the system from posting or limit the usable memory. No heat spreader is fitted, so airflow across the modules must follow the chassis design.

DDR5 registered ECC limits

DDR5 registered ECC memory offloads electrical load to the onboard register, allowing full population at 6400 MT/s, yet the platform's memory controller and BIOS ultimately cap the achievable speed and total capacity. ECC corrects single-bit errors on the fly, but it cannot recover from multi-bit failures or replace a faulty module. The 1.1V supply is fixed by the DDR5 specification for this data rate.

Highlights

  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • Registered ECC design corrects errors and supports full population
  • 4Rx4 288-pin RDIMM form factor matches Supermicro X14SDW-64C-SP9F
  • Major OEM chips from Samsung Micron or Hynix ensure enterprise stability

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-944K4
Capacity256GB (4 x 64GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 4X64GB DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

How can I confirm the kit is running at DDR5 6400 CL52 after installing it in the Supermicro X14SDW-64C-SP9F?

Enter the BIOS or UEFI and check that each of the four slots shows 64 GB at 6400 MT/s with timings of 52-52-52 and voltage at 1.10 V. The registered ECC RDIMM design ensures the memory controller recognises the full 256 GB capacity at rated speed.

What comes in the box and do I need any extra parts to install the 4 x 64 GB kit?

The package contains the four 288-pin DDR5 RDIMM modules only. No heat spreaders, cables, tools or additional brackets are included or required for the Supermicro X14SDW-64C-SP9F motherboard slots.

Which capacity kit should I choose if the manual lists 64 GB and 256 GB supported configurations?

Select the 256 GB (4 x 64 GB) kit when you want to populate all four channels at maximum density with 4Rx4 registered ECC modules; choose a smaller kit only if your specific CPU or chassis limits total memory.

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