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Four green DDR5 RDIMM modules without heat spreaders in a static bag

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 4800 CL40 1.1V ECC RDIMM Supermicro H14SSL-N memory upgrade

SKU CH-A9XF-9X453

A 256 GB DDR5 ECC registered server memory kit with four 64 GB modules at 4800 MT/s, CL40, 1.10 V, validated for the Supermicro H14SSL-N motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 24 more
  • 256 GB total capacity with four 64 GB modules for full server population
  • DDR5 4800 speed and CL40 latency match the memory controller's rated timing
  • Registered ECC architecture corrects single-bit errors and offloads the controller for stable fully-populated operation
  • 1 V operating voltage and 2Rx4 rank align with Supermicro H14SSL-N specifications
  • 288-pin RDIMM form factor fits the motherboard's required DIMM slots exactly

Exact DDR5 upgrade for Supermicro H14SSL-N

This 256GB kit contains four 64GB DDR5 4800 RDIMMs built to the registered ECC specification the H14SSL-N memory controller expects. It targets administrators who need the full 256GB capacity in a single validated package.

Registered ECC headroom at DDR5 4800

The 2Rx4 organisation and 1.1V operation let every slot run fully populated at rated speed while ECC corrects single-bit errors on the fly. Systems that require more than 256GB or speeds above 4800 will exceed this kit's rated ceiling.

Lifetime replacement and US technical support

The bundled lifetime warranty and free US-based support replace a failed module without extra cost and give direct engineering assistance for population-order questions. Buyers who need on-site spares or a different form factor must source those separately.

How it compares

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

Price $6,828.99
Pricier than about 83% 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 $26.68 per GB
Pricier than about 74% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
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 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will this 256GB DDR5 4800 CL40 kit run at rated speed alongside existing DDR5 4800 modules in my Supermicro H14SSL-N?

Yes, the kit matches the exact DDR5 4800 PC5-38400 1.1V CL40 2Rx4 registered ECC specification your board expects, so mixed populations will operate at the common rated speed when populated per the manual.

How can I confirm the 4x64GB modules are recognised at full 256GB capacity and ECC is active after installation?

Check the BIOS memory information screen for 256GB total, DDR5 4800 MT/s, and ECC enabled; the OS memory report should also show 256GB with no correctable error count climbing under load.

What comes in the box and do I need any extra brackets or cables for the Supermicro H14SSL-N?

The box contains only the four 64GB 288-pin DDR5 RDIMM modules; no brackets, cables or additional hardware are required for the H14SSL-N DIMM slots.

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