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Four green DDR5 RDIMM modules without heat spreaders, 288-pin, 512GB kit

NEMIX RAM

NEMIX RAM DDR5 6400 512GB 4x128GB CL52 1.1V 4Rx4 ECC RDIMM Supermicro X14SDV-42C-SP3F

SKU CH-BHM9-XJ7FF

A 512 GB DDR5-6400 registered ECC kit of four 128 GB modules at 1.1 V CL52, validated for the Supermicro X14SDV-42C-SP3F motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

  • Massive 512 GB capacity from four 128 GB modules for dense server workloads
  • DDR5 6400 speed with CL52 latency delivers rated throughput on supported platforms
  • Registered ECC architecture offloads the controller and corrects single-bit errors automatically
  • 10 V operation matches the board's memory-controller requirements exactly
  • Validated for Supermicro X14SDV-42C-SP3F with 288-pin RDIMM form factor

Exact-Match Server Upgrade

This 512GB kit contains four 128GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1V operation. It is built for the Supermicro X14SDV-42C-SP3F motherboard and uses the registered ECC 4Rx4 configuration that board requires.

Capacity and Headroom

Four populated slots deliver 512GB of registered ECC memory, letting the memory controller address the full amount at the rated 6400 MT/s speed. The 4Rx4 organisation supports maximum density per channel, so the kit reaches the platform limit without downclocking.

Thermals and Power

Modules run at 1.1V without heat spreaders, relying on the server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, keeping power draw steady across all four slots during sustained workloads.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $19,162.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $37.43 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-744K4
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will this 512GB DDR5 6400 kit work with the existing DIMMs already installed in my Supermicro X14SDV-42C-SP3F?

This kit is validated for the Supermicro X14SDV-42C-SP3F at DDR5 6400 with 4Rx4 registered ECC at 1.1V CL52. Mixing ranks or speeds can prevent full-speed operation; consult the board manual for approved population rules before adding to existing modules.

How can I confirm the kit is running at DDR5 6400 CL52 1.1V with ECC active after installation?

Enter the BIOS or use a tool like dmidecode to verify each 128GB module shows 6400 MT/s, CL52, 1.1V, registered ECC, and 4Rx4 organisation. The POST memory test should report the full 512GB without errors.

What comes in the box and do I need any extra brackets or cables for the Supermicro X14SDV-42C-SP3F?

The package contains four 128GB 288-pin DDR5 RDIMMs — no heat spreaders, brackets, cables or tools are included. The motherboard uses standard RDIMM slots so no additional hardware is required for installation.

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