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Sixteen green DDR5 RDIMM modules in a tray

NEMIX RAM

NEMIX RAM DDR5 6400 ECC Registered RDIMM 256GB (16 x 16GB) Supermicro H14DST-FL memory upgrade

SKU CH-0PH0-B9A9K

A 256 GB DDR5 ECC Registered RDIMM kit of sixteen 16 GB modules running at 6400 MHz with CL52 latency and 1.1 V for the Supermicro H14DST-FL motherboard

  • 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 DDR5-6400 kit so the server runs at rated speed
  • 16 modules of 1Rx8 registered ECC for full 256 GB capacity
  • Registered architecture offloads the controller for stable full-population operation
  • ECC corrects single-bit errors to prevent silent data corruption
  • Verified fitment for Supermicro H14DST-FL 288-pin RDIMM slots

Purpose-built server memory upgrade

This 256 GB kit delivers sixteen 16 GB DDR5 6400 registered ECC RDIMMs matched to the Supermicro H14DST-FL motherboard. Each module runs at 1.1 V with CL52 timing and a 1Rx8 organisation. The exact rank, voltage and timing profile lets the memory controller recognise full capacity and operate at rated speed.

Registered ECC RDIMM form factor

The 288-pin registered design offloads the memory controller so every slot can be populated without signal degradation. ECC corrects single-bit errors on the fly to prevent silent data corruption and unplanned reboots. Modules lack heat spreaders, so airflow across the DIMM slots handles cooling in standard server chassis.

Thermals and power in normal use

Operating at 1.1 V keeps power draw low per module even with all sixteen slots filled. Registered buffering reduces electrical load on the controller, helping maintain stable temperatures under sustained workloads. The kit is validated for the target platform, so no manual tuning is required to achieve rated DDR5 6400 performance.

How it compares

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

Price $7,163.99
Pricier than about 83% 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 $27.98 per GB
Pricier than about 78% 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 this DDR5-6400 kit run at its rated speed on the Supermicro H14DST-FL?

Yes, the kit matches the board's DDR5-6400 (PC5-51200) specification with CL52 timing and 1.10 V, so the memory controller recognises the full 256 GB at rated speed.

What physical slot type and module height does this 288-pin RDIMM kit require?

It uses standard 288-pin DDR5 RDIMM slots; the modules have no heat spreader, so they fit the Supermicro H14DST-FL's DIMM sockets without clearance issues.

In which order should the sixteen 1Rx8 modules be populated on the H14DST-FL?

Follow the motherboard manual's population sequence for sixteen 1Rx8 RDIMMs — typically filling one DIMM per channel in the prescribed slot order before adding a second rank per channel.

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