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Sixteen green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 256GB 16x16GB CL40 1.1V Supermicro H14DSG-OD memory upgrade

SKU CH-Q3H3-M59SE

A 256 GB DDR5 ECC registered kit of sixteen 16 GB modules running at 4800 MHz CL40 1.1 V, validated for the Supermicro H14DSG-OD motherboard

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 16X16GB

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  • 256 GB kit fills every slot for maximum capacity
  • Registered ECC design corrects single-bit errors to protect data integrity
  • DDR5 4800 CL40 at 1.1 V matches the board's native timing
  • 16 × 16 GB 1Rx8 modules populate all channels for full bandwidth
  • 288-pin RDIMM form factor fits the Supermicro H14DSG-OD exactly

Exact DDR5-4800 RDIMM kit

This 256GB kit contains 16 modules of 16GB each, built as DDR5-4800 PC5-38400 Registered ECC RDIMMs with CL40 timing at 1.1V. The 1Rx8 organisation and 288-pin form factor match the Supermicro H14DSG-OD motherboard requirements for full-capacity population.

Suited for H14DSG-OD memory expansion

Ideal for administrators who need to maximise the supported memory on this specific Supermicro platform with validated Registered ECC modules. Not for systems that accept only UDIMM or SODIMM form factors, or for builds requiring speeds above DDR5-4800.

DDR5-4800 Registered ECC specification

The DDR5-4800 Registered ECC RDIMM standard with 1Rx8 rank and 1.1V operation determines whether the memory controller recognises every module at rated speed. Verify the motherboard manual for approved population order before installation.

How it compares

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

Price $7,520.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $29.38 per GB
Pricier than about 83% 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 numberMR38400-618K16
Total capacity256 GB (16 × 16 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 16 × 16 GB DDR5 4800 MHz PC5-38400 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I install the 16 DDR5 RDIMM modules in the Supermicro H14DSG-OD, and which step is most often missed?

Power off the server, open the chassis, and insert each 288-pin module into the slots listed in the motherboard manual's population table; the step most often missed is following the exact slot order so the memory controller recognises all 256GB at DDR5-4800.

What maintenance or replacement will the 1Rx8 ECC registered kit need during its service life?

The modules have no heat spreaders or moving parts, so no routine maintenance is required; replacement is only needed if a DIMM fails, which the lifetime warranty covers with a direct swap of the faulty 16GB stick.

What limit appears first when the 256GB kit runs sustained workloads at CL40 1.10V?

The registered buffer and ECC logic keep signal integrity at full population, so the first limit is the DDR5-4800 data rate and CL40 latency ceiling set by the memory controller — thermals stay within spec because each 1Rx8 module draws only 1.1V.

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