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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 2x64GB CL52 1.1V 4Rx4 ECC RDIMM Supermicro X14SDV-42C-SP3F memory upgrade

SKU CH-PTDF-45G60

128 GB DDR5-6400 2×64 GB 4Rx4 registered ECC RDIMM kit validated for Supermicro X14SDV-42C-SP3F

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 128GB 2X64GB

  • 128 GB capacity in a matched 2 x 64 GB kit
  • DDR5 6400 speed rated at PC5-51200
  • CL52 latency at 1.10 V operating voltage
  • 4Rx4 registered ECC RDIMM for enterprise stability
  • Verified compatibility with Supermicro X14SDV-42C-SP3F motherboard

Exact-Match DDR5-6400 Server Upgrade

This 128GB kit delivers two 64GB DDR5-6400 Registered ECC RDIMMs built to the precise rank, voltage, and timing the Supermicro X14SDV-42C-SP3F memory controller expects. The 4Rx4 organization and 1.1V operation allow full-capacity recognition at rated speed without manual tuning. It targets administrators who need guaranteed compatibility in a validated server platform.

Replaces Mismatched or Lower-Capacity DIMMs

Swapping mixed-rank or slower modules for this spec-matched pair eliminates population-rule conflicts and restores the board's intended memory topology. The jump is worthwhile when current DIMMs force downclocking, limit total capacity, or lack ECC protection for production workloads. Builders using UDIMMs or SODIMMs cannot use this Registered form factor.

128GB Headroom for Dense Virtualization

The 128GB total (2 x 64GB) comfortably hosts large VM fleets, in-memory databases, and multi-tenant containers while ECC corrects single-bit errors on the fly. Registered buffering keeps every slot stable at full load. Capacity runs out when workloads exceed 128GB or require higher frequencies than DDR5-6400 provides.

Highlights

  • 128 GB capacity in a matched 2 x 64 GB kit
  • DDR5 6400 speed rated at PC5-51200
  • CL52 latency at 1.10 V operating voltage
  • 4Rx4 registered ECC RDIMM for enterprise stability
  • Verified compatibility with Supermicro X14SDV-42C-SP3F motherboard

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-944K2
Capacity128GB (2 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 Content128GB 2X64GB DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 288-pin RDIMM modules fit the Supermicro X14SDV-42C-SP3F motherboard slots?

Yes, this kit uses the 288-pin DDR5 RDIMM form factor that the Supermicro X14SDV-42C-SP3F requires. It is not a UDIMM or SODIMM, so it matches the board's physical slot keying.

What installation step is often missed when populating all slots with these 4Rx4 modules?

The motherboard manual specifies a required DIMM population order for full-capacity operation. Install the two 64 GB modules in the exact slots listed in that order, or the system may not recognise the full 128 GB at DDR5-6400.

Do the modules need active cooling or heat-spreader maintenance over time?

No heat spreader is fitted on these modules. Standard server airflow across the bare DRAM is sufficient; no extra cooling or spreader upkeep is required.

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