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Four green DDR5 RDIMM modules in a row, gold contacts visible, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB 4X64GB DDR5 6400MHz CL52 4Rx4 1.1V ECC Registered RDIMM memory upgrade for Supermicro X14SRA-T

SKU CH-Q0KW-A3RQQ

A 256 GB kit of four 64 GB DDR5-6400 registered ECC RDIMMs built for the Supermicro X14SRA-T motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 4 more
  • 256GB total capacity lets your server handle large workloads with four 64GB modules
  • DDR5 6400 speed delivers high throughput at the rated PC5-51200 data rate
  • CL52 latency and 1.1V voltage match the memory controller timing for stable operation
  • ECC and registered design correct single-bit errors and buffer signals for full-slot reliability
  • 288-pin RDIMM form factor fits the Supermicro X14SRA-T motherboard memory slots exactly

System-Specific DDR5 Kit

This 256 GB kit contains four 64 GB DDR5 Registered ECC RDIMMs built to the exact electrical and mechanical specification of the Supermicro X14SRA-T motherboard. The modules arrive new and ready for immediate installation in all four slots.

Capacity and Headroom

The 256 GB total (4 × 64 GB) suits virtualization hosts, in-memory databases and dense container clusters that need maximum addressable memory per socket. Population beyond these four modules is limited by the board's slot count and qualified vendor list.

Thermals, Noise and Power Draw

Each module operates at 1.10 V with no integrated heat spreader, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, keeping power draw predictable under sustained full-capacity workloads.

How it compares

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

Price $8,568.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $33.47 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 numberMR51200-944K4
Total capacity256 GB (4 × 64 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 items256 GB 4 × 64 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

Will the four 64 GB DDR5 6400 CL52 4Rx4 RDIMMs run at full speed alongside existing DDR5 modules in the Supermicro X14SRA-T?

The kit is an exact-match upgrade spec-matched to the board's memory-population rules. The memory controller expects this precise rank, voltage, and timing so it is recognized at full capacity and rated speed. Check your system manual for supported capacities and approved DIMM population order before mixing modules.

How can I verify the 256 GB DDR5 6400 kit is running at its rated CL52 latency and 1.10 V after installation?

Enter the system BIOS or UEFI and confirm the memory frequency reads 6400 MT/s, CAS latency shows CL52, and voltage reports 1.10 V. Registered ECC operation and full 256 GB capacity should also be reported without errors.

What is included in the MR51200-944K4 package and are any extra parts needed for the Supermicro X14SRA-T?

The box contains the 256 GB kit as four 64 GB 288-pin DDR5 RDIMMs. No heat spreaders are fitted. No additional components are required for installation on the Supermicro X14SRA-T beyond the DIMMs themselves.

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