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Four green DDR5 RDIMM modules, no heat spreaders, 288-pin gold contacts

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 6400MHz CL52 4Rx4 ECC Registered RDIMM Supermicro X14SRA-F memory upgrade

SKU CH-Z70S-9X6S5

A 512GB DDR5 registered ECC memory kit with four 128GB modules running at 6400MHz CL52 1.10V for Supermicro X14SRA-F servers

  • 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

Show 4 more
  • 512 GB total capacity from four 128 GB modules
  • DDR5-6400 speed with CL52 latency for rated performance
  • Registered ECC design prevents silent data corruption
  • 1 V operation matches the motherboard specification
  • Verified fit for Supermicro X14SRA-F 288-pin RDIMM slots

Exact-match server upgrade

This NEMIX RAM kit delivers 512GB across four 128GB DDR5 RDIMMs built for the Supermicro X14SRA-F motherboard. Registered ECC modules operate at 6400MHz with CL52 latency and 1.1V voltage to match the platform's memory-controller requirements precisely.

Thermals and power

Each module runs at the standard 1.1V DDR5 voltage without a heat spreader, relying on server chassis airflow for cooling. Registered architecture buffers the command bus so all four slots stay stable at full population while ECC corrects single-bit errors before they affect workloads.

4Rx4 rank configuration

The 4Rx4 organization is the single specification that determines whether this kit works in your X14SRA-F; the board's memory population rules require this exact rank structure to recognise the full 512GB capacity at rated speed.

How it compares

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

Price $19,107.99
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 $37.32 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

Other versions of this model

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Questions about this item

How do I install the 4Rx4 DDR5 6400 RDIMMs on the Supermicro X14SRA-F and what slot order mistake should I avoid?

Follow the motherboard manual for the approved DIMM population sequence; the four 128 GB modules must fill the specific channels in the exact order the manual lists so the memory controller recognises the full 512 GB at DDR5-6400.

What maintenance or replacement will the NEMIX RAM 512 GB kit need over its service life?

The modules carry a lifetime replacement warranty and have no heat spreaders or moving parts; no scheduled maintenance is required beyond standard server dust cleaning and firmware updates.

What limit appears first when the 4Rx4 registered ECC kit runs sustained workloads on the X14SRA-F?

The registered buffer and on-die ECC keep signal integrity at the rated 1.1 V and CL52, so the first practical ceiling is the motherboard's maximum supported capacity and thermal envelope rather than the memory itself.

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