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Two green DDR5 RDIMM sticks, no heat spreaders, gold contacts, black PCB, side by side

NEMIX RAM

NEMIX RAM 128GB (2×64GB) DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM memory upgrade

SKU CH-9NX9-9SE34

A 128 GB registered ECC DDR5 kit with two 64 GB modules running at 6400 MT/s and CL52 latency for the Supermicro H14DSG-OD motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity with two 64 GB modules for maximum server density
  • DDR5 6400 speed and CL52 latency deliver rated throughput
  • Registered ECC architecture corrects single-bit errors and stabilises full population
  • 1 V operation matches the motherboard's memory controller specification
  • Verified compatibility with Supermicro H14DSG-OD motherboard

Capacity and purpose

This 128GB kit contains two 64GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1V operation. The 2Rx4 registered ECC modules are built for the Supermicro H14DSG-OD motherboard and similar server platforms that require registered memory. They suit administrators who need maximum registered capacity per channel for virtualization, database or compute workloads.

Installation notes

Each module uses the standard 288-pin RDIMM form factor and seats like any registered DIMM; no heat spreader is fitted so clearance is minimal. The board's population rules dictate which slots must be filled first, so follow the manual's sequence exactly. A common error is mixing registered and unbuffered DIMMs or populating slots in the wrong order, which prevents the system from posting.

Pre-order checks

Confirm that your Supermicro H14DSG-OD or target server lists DDR5-6400 2Rx4 registered ECC RDIMMs on its qualified vendor list and supports 128GB total across the available slots. Verify the required DIMM population order and maximum capacity per channel in the motherboard manual. Ensure the BIOS version installed meets the memory controller's requirements for this speed and rank configuration.

How it compares

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

Price $4,164.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.54 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 numberMR51200-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How can I confirm the kit is running at DDR5 6400 CL52 after installing it in my Supermicro H14DSG-OD?

Enter the BIOS and verify the memory speed shows 6400 MT/s with CAS latency 52; the registered ECC RDIMM design ensures the controller recognises both 64 GB modules at the rated 1.10 V.

What exactly ships in the MR51200-924K2 package and do I need any extra parts?

The box contains two 64 GB 288-pin DDR5 RDIMM modules for a total of 128 GB; no heat spreaders, cables or additional hardware are included or required.

Why choose this 2Rx4 128 GB kit over other capacities for the H14DSG-OD?

The 2Rx4 organisation matches the motherboard's qualified population rules, allowing full 128 GB capacity at the native 6400 speed without down-clocking or slot restrictions.

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