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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin registered ECC memory kit

NEMIX RAM

NEMIX RAM DDR5 256GB 4x64GB 6400MHz CL52 1.1V ECC Registered RDIMM Supermicro H14SSF

SKU CH-Y5NY-7H32Z

A 256GB kit of four 64GB DDR5 ECC Registered RDIMMs running at 6400MHz CL52, validated for Supermicro H14SSF servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 256 GB kit runs at DDR5-6400 CL52 1.1 V
  • Registered ECC RDIMM prevents silent data corruption under load
  • 2Rx4 288-pin layout matches Supermicro H14SSF slot requirements
  • Four 64 GB modules populate every channel at full capacity
  • Lifetime replacement warranty with US-based technical support

Exact-match 256 GB DDR5 kit for Supermicro H14SSF

This 256 GB kit contains four 64 GB DDR5 RDIMMs rated at 6400 MHz with CL52 latency and 1.1 V operation. Registered ECC architecture with 2Rx4 organisation matches the memory controller requirements of the Supermicro H14SSF motherboard so the system recognises full capacity at rated speed.

Suited for servers needing maximum registered ECC

Ideal for administrators populating every slot on a Supermicro H14SSF board with validated registered ECC modules. Not suitable for workstations or desktops that require unbuffered UDIMMs, for systems limited to lower memory speeds, or for builds that need heat spreaders on every module.

Handles full 256 GB population at DDR5-6400

Four 2Rx4 modules deliver 256 GB of registered ECC memory at the board's supported 6400 MHz data rate. Capacity headroom ends at this kit's 256 GB limit; larger configurations would need a motherboard with more slots or higher-density DIMMs not covered by this part number.

How it compares

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

Price $8,294.99
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 $32.40 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 numberMR51200-924K4
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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Do I need a Supermicro H14SSF motherboard to install this 288-pin DDR5 RDIMM kit?

Yes, this 256GB kit is validated for the Supermicro H14SSF motherboard and requires its 288-pin RDIMM slots.

Will these 2Rx4 registered ECC modules work if I keep older DDR5 RDIMMs in the same H14SSF system?

Mixing ranks or speeds can prevent the server from booting at 6400MHz; the board's population rules usually require identical DIMMs per channel.

How can I confirm the kit runs at 6400MHz CL52 1.1V after installation?

Check the BIOS memory information screen or run a tool like dmidecode to verify speed, latency and voltage match the rated values.

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