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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR51200-618K16 256GB (16x16GB) DDR5 6400 CL52 1.1V 1Rx8 ECC RDIMM Supermicro H14DSH memory upgrade

SKU CH-ZM6D-180JR

256GB DDR5 6400 CL52 1.1V 1Rx8 ECC RDIMM kit of sixteen 16GB modules for Supermicro H14DSH

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 256GB DDR5-6400 kit runs at rated speed
  • Registered ECC design prevents silent data corruption
  • 16 modules of 16GB each fill every slot
  • 1V CL52 timing matches controller expectations
  • Verified fit for Supermicro H14DSH motherboard

256GB DDR5-6400 ECC RDIMM kit for Supermicro H14DSH

This 256GB kit contains sixteen 16GB DDR5-6400 registered ECC modules built to the exact 1Rx8 rank, 1.1V voltage and CL52 timing the Supermicro H14DSH memory controller expects. It is intended for administrators who need the full 256GB capacity recognised at rated speed without manual tuning.

Verify motherboard population rules

The H14DSH requires 288-pin RDIMM modules and enforces specific population sequences that vary by processor configuration. Consult the system or motherboard manual for supported capacities per channel, approved DIMM installation order and any BIOS version requirements before purchasing this sixteen-module kit.

Registered buffering and ECC maintain stability

The registered architecture offloads the memory controller so all sixteen slots can run fully populated at DDR5-6400 without signal degradation, while on-die ECC corrects single-bit errors in real time. This combination prevents silent data corruption and unplanned reboots during sustained enterprise workloads.

How it compares

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

Price $8,296.99
Pricier than about 85% 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 $32.41 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 numberMR51200-618K16
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

Does the 256GB kit include all 16 RDIMMs or must any modules be purchased separately?

The package content is a single 256GB kit containing 16 x 16GB DDR5 6400 RDIMMs, so every module needed for the full capacity is included.

Should I choose this 16 x 16GB 1Rx8 CL52 kit or a different capacity for the Supermicro H14DSH?

This exact-match upgrade provides 256GB across 16 slots with 1Rx8 organisation, CL52 timing and 1.1V voltage — the precise rank, voltage and timing the H14DSH memory controller expects for full-speed operation.

What does the DDR5 6400 PC5-51200 rating mean once the modules are installed in the H14DSH?

The modules will run at 6400 MT/s with CL52 latency at 1.1V, delivering PC5-51200 bandwidth while the registered ECC architecture keeps every slot stable at full population.

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