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Two green 288-pin DDR5 RDIMM modules, no heat spreaders, side by side

NEMIX RAM

NEMIX RAM DDR5 4800 256GB (2x128GB) ECC Registered RDIMM CL40 1.1V Supermicro H14DST-FL memory upgrade

SKU CH-0ZYS-0XP1J

256GB kit of two 128GB DDR5 4800MHz ECC Registered RDIMMs at 1.1V CL40, validated for the Supermicro H14DST-FL motherboard

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

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  • 256 GB capacity lets you fully populate the Supermicro H14DST-FL
  • Registered ECC design corrects single-bit errors on the fly
  • DDR5 4800 speed runs at the board's rated frequency
  • 1 V operation matches the controller's voltage requirement
  • 2Rx4 dual-rank layout enables full-density operation per slot

Exact-fit DDR5 kit for Supermicro H14DST-FL

This 256 GB kit uses two 128 GB registered ECC RDIMMs built to the DDR5 4800 standard. It targets administrators who need maximum capacity on this specific motherboard without mixing ranks or voltages.

DDR5 4800 registered ECC ceiling

The modules run at 1.1 V with CL40 timing and a 2Rx4 organisation. Registered buffering lets every slot stay populated at full speed, while ECC corrects single-bit errors before they reach the OS.

256 GB headroom and hard stops

Two slots deliver 256 GB total; adding more requires open DIMM sockets and a motherboard that supports higher density per channel. The kit stops at this capacity and cannot be expanded on boards limited to lower per-slot limits.

How it compares

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

Price $8,390.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $32.78 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 numberMR38400-724K2
Total capacity256 GB (2 × 128 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 2 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I choose the 256GB (2x128GB) kit or a smaller capacity for my Supermicro H14DST-FL?

The 256GB kit provides two 128GB modules that match the board's DDR5 4800 Registered ECC requirements. Verify your motherboard manual for maximum supported capacity and approved population order before installing.

What does the DDR5 4800 (PC5-38400) speed rating mean once the modules are installed in the server?

The modules will operate at 4800 MT/s with CL40 latency at 1.1V, delivering the rated bandwidth your memory controller expects when fully populated with Registered DIMMs.

How does the 288-pin Registered ECC interface affect compatibility and error handling in the H14DST-FL?

The 288-pin RDIMM form factor is required by this motherboard; Registered buffering reduces electrical load on the controller and on-die ECC corrects single-bit errors to prevent data corruption.

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