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Four green DDR5 RDIMM modules without heat spreaders in a kit

NEMIX RAM

NEMIX RAM MR51200-744K4 512GB 4x128GB DDR5 6400 CL52 4Rx4 Registered ECC RDIMM memory upgrade

SKU CH-K3BM-6S3K6

512 GB DDR5-6400 ECC Registered RDIMM kit (four 128 GB modules) validated for the Supermicro X14SDW-36CE-SP9F motherboard

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 512GB 4X128GB

  • 512 GB total capacity from four 128 GB modules for maximum server memory density
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for demanding workloads
  • Registered ECC architecture offloads the memory controller and corrects single-bit errors automatically
  • 10 V operating voltage matches the motherboard's DDR5 power specification exactly
  • Validated for the Supermicro X14SDW-36CE-SP9F with 288-pin RDIMM form factor and 4Rx4 rank configuration

Exact-Match Server Kit

This 512GB kit contains four 128GB DDR5 RDIMM modules built to the exact rank, voltage and timing the Supermicro X14SDW-36CE-SP9F memory controller expects. The registered ECC design ensures full-capacity recognition at the rated 6400MT/s speed without manual tuning.

Capacity and Headroom

Four 4Rx4 modules deliver 512GB of registered ECC memory, allowing every slot to run fully populated while the buffered architecture offloads the memory controller. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots in production workloads.

Build and Day-to-Day Implications

Modules use major OEM Samsung, Micron or Hynix chips and operate at 1.1V without heat spreaders, relying on server chassis airflow for cooling. The 288-pin RDIMM form factor fits only boards wired for registered memory; UDIMM or SODIMM slots will not accept them. Consult the system manual for approved population order before installation.

Highlights

  • 512 GB total capacity from four 128 GB modules for maximum server memory density
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for demanding workloads
  • Registered ECC architecture offloads the memory controller and corrects single-bit errors automatically
  • 10 V operating voltage matches the motherboard's DDR5 power specification exactly
  • Validated for the Supermicro X14SDW-36CE-SP9F with 288-pin RDIMM form factor and 4Rx4 rank configuration

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-744K4
Capacity512GB (4 x 128GB)
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 Content512GB 4X128GB DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 4Rx4 registered ECC RDIMM modules work with the Supermicro X14SDW-36CE-SP9F motherboard I already have?

The kit is verified for the Supermicro X14SDW-36CE-SP9F motherboard and uses the exact 288-pin registered DDR5 form factor and 1.1V voltage that board requires.

How can I confirm the 512GB kit is running at DDR5 6400 with CL52 after installation?

Check the BIOS memory information screen; it should show 6400 MT/s, CL52 timings, 1.10V and all four 128GB modules recognised as 4Rx4 registered ECC.

What comes in the MR51200-744K4 box and do I need any extra parts?

The box contains the 512GB kit of four 128GB DDR5 6400 CL52 4Rx4 1.1V ECC registered RDIMM modules; no additional components are required for installation.

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