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Four green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 512GB (4 x 128GB) DDR5 6400 CL52 ECC RDIMM Supermicro H14DST-F memory upgrade

SKU CH-JDW8-51FB1

A 512 GB DDR5-6400 registered ECC kit of four 128 GB modules at 1.1 V CL52, built for the Supermicro H14DST-F motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 512 GB kit runs at DDR5-6400 CL52 1.1 V for full rated speed
  • Four 128 GB 2Rx4 Registered ECC RDIMMs populate every slot at capacity
  • Registered architecture offloads the controller while ECC corrects single-bit errors on the fly
  • 288-pin DDR5 RDIMM form factor verified for Supermicro H14DST-F motherboard
  • Lifetime replacement warranty with free US-based technical support included

Exact-match upgrade for Supermicro H14DST-F

This 512GB kit delivers four 128GB DDR5 RDIMMs tuned to the Supermicro H14DST-F motherboard. Registered ECC architecture lets every slot run fully populated at rated speed. It targets administrators who need maximum capacity without mixing modules. Buyers using consumer boards or UDIMM-only platforms cannot use this kit.

Registered ECC DDR5-6400 at 1.1V CL52

The single specification that decides fitment is the 2Rx4 Registered ECC profile at DDR5-6400 with 1.1V CL52 timing. The memory controller expects this exact rank, voltage and latency combination. Any deviation in rank structure or voltage prevents full-capacity recognition. Builders needing unbuffered UDIMMs or different latency bins must select another part.

Four-module kit enables full population

The bundle supplies four matched 128GB RDIMMs so the board can be filled in the approved population order. No extra brackets, software or cables are included. Installers must still follow the motherboard manual for slot sequence and BIOS settings. Sites requiring pre-tested multi-kit validation or on-site spares will need separate purchases.

How it compares

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

Price $17,431.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $34.05 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-724K4
Total capacity512 GB (4 × 128 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 items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

What does the DDR5 6400 rating mean once the modules are installed in a Supermicro H14DST-F?

The kit runs at 6400 MT/s with CL52 latency at 1.1 V, delivering the full PC5-51200 bandwidth the board's memory controller expects when all four slots are populated.

How does the registered ECC RDIMM interface affect what the system can actually use?

Registered buffering lets the memory controller drive all four 128 GB modules at rated speed, while ECC corrects single-bit errors on the fly to prevent silent data corruption.

What physical slot and keying do these 288-pin modules need on the motherboard?

They require standard DDR5 RDIMM slots with the 288-pin key notch; the board must accept registered DIMMs, not UDIMMs or SODIMMs.

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