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Sixteen green DDR5 RDIMM modules without heat spreaders in a row

NEMIX RAM

NEMIX RAM DDR5 256GB 16x16GB 4800MHz CL40 1.1V ECC RDIMM Supermicro H14DSG-OM

SKU CH-J6KX-4AY23

A 256GB kit of sixteen 16GB DDR5 ECC registered RDIMMs running at 4800MHz CL40 1.1V, validated for the Supermicro H14DSG-OM 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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  • 256GB capacity across 16 modules fills every slot for maximum server density
  • DDR5-4800 speed with CL40 latency delivers rated throughput for Supermicro H14DSG-OM
  • Registered ECC architecture corrects single-bit errors to prevent silent data corruption
  • 1V operation at 1Rx8 rank matches the memory controller's exact requirements
  • 288-pin RDIMM form factor ensures physical and electrical compatibility with the motherboard

Server-ready DDR5 kit

This 256GB kit contains sixteen 16GB DDR5 RDIMMs rated at 4800MHz with CL40 latency and 1.1V operation. It targets administrators upgrading a Supermicro H14DSG-OM motherboard that demands registered ECC memory in a fully populated 16-slot layout.

DDR5 4800 registered limits

The DDR5-4800 standard caps single-rank RDIMM bandwidth at PC5-38400, and the registered buffer adds one cycle of command latency versus unbuffered modules. Full 16-slot population forces the memory controller to run at the base JEDEC speed without overclocking headroom.

Install and common issues

Modules are 288-pin RDIMMs that key only into DDR5 RDIMM slots; they will not seat in UDIMM or SODIMM sockets. The motherboard manual dictates the exact population sequence, and skipping a required slot order is the most frequent cause of a no-post condition.

How it compares

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

Price $6,268.99
Pricier than about 82% 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 $24.49 per GB
Pricier than about 69% 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

Other versions of this model

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Questions about this item

Is the full 256 GB kit the only capacity option for this Supermicro H14DSG-OM kit?

The listing shows a single 256 GB kit built from sixteen 16 GB modules; no smaller or larger kits are offered for this motherboard.

Will the DDR5-4800 CL40 rating run at that speed on the H14DSG-OM without manual tuning?

The kit is spec-matched to the board's memory controller, so it is recognised at full capacity and operates at its rated 4800 MT/s with CL40 timings at 1.1 V.

Does the 288-pin RDIMM form factor and registered ECC design work with the H14DSG-OM's memory slots?

Yes, the modules are 288-pin registered ECC RDIMMs, the exact form factor and buffering the H14DSG-OM requires for fully populated operation.

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