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Four green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 6400MHz PC5-51200 4Rx4 1.1V CL52 288-Pin ECC RDIMM Kit Supermicro X14SRA-F

SKU CH-CM4Y-1JZYC

256 GB kit of four 64 GB DDR5-6400 registered ECC RDIMMs at CL52 and 1.1 V, validated for the Supermicro X14SRA-F 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
  • 256 GB total capacity from four 64 GB modules for maximum server density
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for demanding workloads
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the platform's native voltage for reliable initialisation
  • 288-pin RDIMM form factor verified for Supermicro X14SRA-F motherboard compatibility

Exact-Match Kit for Supermicro X14SRA-F

This 256GB kit contains four 64GB DDR5 6400MHz Registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro X14SRA-F memory controller expects. It installs as a matched set so the server recognises the full capacity at rated speed.

Registered 4Rx4 Architecture

Each module uses a 4Rx4 organisation with Registered buffering and ECC, operating at 1.1V CL52. The Registered design offloads the memory controller to keep every slot stable when fully populated, while ECC corrects single-bit errors before they affect production workloads.

Suited for X14SRA-F builds needing maximum capacity

Ideal for administrators populating the Supermicro X14SRA-F to its supported limit with validated DDR5 RDIMMs. Not for systems that require UDIMM or SODIMM form factors, non-ECC memory, lower voltages, or different DDR generations.

How it compares

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

Price $7,624.99
Pricier than about 84% 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 $29.79 per GB
Pricier than about 85% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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

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Questions about this item

What does DDR5 6400 CL52 mean for throughput and latency on the Supermicro X14SRA-F?

The kit runs at 6400 MT/s with a CL52 timing at 1.1 V, so the memory controller sees its rated speed and latency without manual tuning.

How does the PC5-51200 rating relate to the 288-pin DDR5 RDIMM slot on this board?

PC5-51200 is the JEDEC bandwidth designation for DDR5-6400; the 288-pin registered DIMM keying matches the X14SRA-F slots exactly.

Will four 64 GB 4Rx4 registered DIMMs fit the X14SRA-F memory population rules?

The kit provides four 288-pin RDIMMs built to the board's required rank, voltage and timing, so it installs in the supported full-population order.

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