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Two green circuit boards with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 256GB 2x128GB DDR5 4800 CL40 1.1V ECC RDIMM Supermicro H14DSG-OD

SKU CH-7Q79-9NAF2

256 GB DDR5 4800 CL40 ECC registered RDIMM kit (2 × 128 GB, 1.1 V, 288-pin) validated for the Supermicro H14DSG-OD 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 total capacity from two 128 GB modules for high-density server workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput for Supermicro H14DSG-OD
  • Registered ECC architecture corrects single-bit errors and supports full population stability
  • 1 V operation matches the motherboard's voltage requirement for reliable compatibility
  • 288-pin RDIMM form factor fits the exact slot type the board requires

Exact-match DDR5 kit

This 256GB kit contains two 128GB DDR5 4800 modules built to the precise rank, voltage and timing the Supermicro H14DSG-OD memory controller expects so the server recognises full capacity at rated speed.

Registered ECC RDIMM

The single specification that decides fitment is the 288-pin Registered ECC RDIMM form factor with 2Rx4 organisation and 1.1V operation; a UDIMM, SODIMM or different rank structure will not work in this board.

Straightforward slot install

Installation follows the motherboard manual population order for registered DIMMs; the usual issue is mixing ranks or skipping required slots which prevents the system from posting at full capacity.

How it compares

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

Price $7,082.99
Pricier than about 83% 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 $27.67 per GB
Pricier than about 77% 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

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Questions about this item

Will 4800 MT/s DDR5 run at that speed on a Supermicro H14DSG-OD?

The kit is rated DDR5-4800 (PC5-38400) with CL40 and 1.10 V. When installed in the validated H14DSG-OD platform the memory controller recognises the exact rank, voltage and timing, so it initialises at the rated 4800 MT/s without down-clocking.

Does the registered ECC design change what the DDR5 bus can deliver?

Registered (buffered) RDIMMs offload the memory controller, letting every slot run fully populated at the full 4800 MT/s rate while on-die ECC corrects single-bit errors before they reach the OS.

What physical slot and clearance does this 288-pin RDIMM need?

It uses the standard 288-pin DDR5 RDIMM form factor — no heat spreader — so it fits any DDR5 RDIMM slot on the H14DSG-OD following the board's population order.

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