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Sixteen green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 16x16GB ECC RDIMM CL52 1.1V Supermicro H14DSG-OD

SKU CH-QNJJ-HBTE9

256 GB DDR5 ECC registered server memory kit with 16 modules at 6400 MHz, CL52, 1.1 V for Supermicro H14DSG-OD motherboards

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB capacity from sixteen 16 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • ECC registered RDIMM design prevents data errors
  • 288-pin form factor fits Supermicro H14DSG-OD motherboard
  • Lifetime replacement warranty with US-based technical support

Exact DDR5-6400 RDIMM Kit

This 256GB kit contains 16 registered ECC modules rated at 6400 MT/s with CL52 timing and 1.10V operation. It is built for the Supermicro H14DSG-OD motherboard and matches the 288-pin RDIMM form factor that platform requires. System integrators and IT teams needing a validated, full-population upgrade use this exact configuration.

Population Rules Limit Capacity

The motherboard dictates how many DIMM slots can be filled and in which order, so the full 256GB is only available when the board supports 16 modules. Registered buffering allows every slot to run at rated speed, but the manual defines the maximum supported capacity per channel. Buyers who need a different total capacity or fewer modules must select a kit that matches their board's approved population table.

1Rx8 Rank Determines Compatibility

Each module uses a single-rank 1Rx8 organisation, which the memory controller expects for correct timing and signal integrity. A dual-rank or different rank layout would change electrical loading and can prevent the system from posting or running at DDR5-6400. Verify that your server's memory-qualified vendor list approves 1Rx8 registered DIMMs before ordering.

How it compares

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

Price $7,697.99
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 $30.07 per GB
Pricier than about 86% 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 numberMR51200-618K16
Total capacity256 GB (16 × 16 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 16 × 16 GB DDR5 6400 MHz PC5-51200 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I pick the 16-module 256 GB kit or a smaller capacity for my Supermicro H14DSG-OD?

The 16 x 16 GB kit fills every DDR5 RDIMM slot on the H14DSG-OD, delivering the full 256 GB at the rated 6400 MT/s with CL52 and 1.1 V. Smaller kits leave slots empty and reduce total capacity.

What does the 6400 MT/s rating actually deliver once the modules are installed in the server?

The board's memory controller will run the registered ECC DDR5 DIMMs at 6400 MT/s (PC5-51200) with CL52 latency at 1.1 V, giving the full rated bandwidth across all 16 slots.

How does the 288-pin RDIMM interface and registered ECC design affect real-world limits?

The 288-pin registered DDR5 form factor buffers each command, allowing all 16 ranks to operate at 6400 MT/s without signal degradation, while on-die ECC corrects single-bit errors before they reach the OS.

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