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Four green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 4800 CL40 ECC RDIMM Supermicro H14DSG-OM

SKU CH-R8QQ-H74WJ

A 256GB DDR5-4800 ECC registered RDIMM kit built to the Supermicro H14DSG-OM motherboard's exact rank, voltage and timing requirements

  • 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

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  • 256 GB kit fills four slots for maximum server capacity
  • DDR5-4800 CL40 at 1.1 V matches the motherboard's rated speed
  • Registered ECC RDIMM corrects single-bit errors to prevent data corruption
  • 2Rx4 288-pin modules align with the board's population rules
  • Samsung, Micron or Hynix chips deliver enterprise-grade stability

Exact-match DDR5-4800 ECC RDIMM kit

This 256GB kit contains four 64GB DDR5 modules rated at 4800 MT/s with CL40 latency and 1.1V operation. Registered ECC architecture provides error correction and signal buffering for stable operation in fully populated server configurations. Designed specifically for the Supermicro H14DSG-OM motherboard.

288-pin RDIMM installation notes

Modules install vertically into the motherboard's 288-pin DDR5 RDIMM slots following the population order in your system manual. Registered DIMMs add slight insertion resistance compared to unbuffered types; press evenly until both latches engage. Common issues include mixing ranks or voltages across channels and skipping the board's required population sequence.

Pre-order configuration checks

Verify the motherboard's qualified vendor list for 64GB 2Rx4 registered modules at 4800 MT/s. Confirm the maximum supported capacity per slot and total system limit. Check BIOS version requirements for DDR5-4800 operation with four DIMMs installed. Ensure your chassis airflow accommodates modules without heat spreaders.

How it compares

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

Price $7,227.99
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 $28.23 per GB
Pricier than about 79% 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

Other versions of this model

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Questions about this item

How can I confirm the 256GB kit is running at DDR5 4800 CL40 after installation?

Enter the system BIOS or UEFI and verify the memory speed shows 4800 MT/s, CAS latency reads CL40, voltage is 1.10V, and all four 64GB modules are detected for the full 256GB capacity.

What comes in the box and do I need any extra parts for the Supermicro H14DSG-OM?

The package contains the 256GB kit as four 64GB DDR5 288-pin ECC Registered RDIMMs; no additional cables, brackets or cooling are required for this motherboard.

Should I choose this 4x64GB kit or a different capacity for the H14DSG-OM?

Select this 256GB 4x64GB 2Rx4 Registered ECC kit when your configuration calls for four DIMMs at the board's native DDR5 4800 speed; other capacities or ranks may not match the memory population rules.

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