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Two green DDR5 RDIMM sticks side by side no heat spreaders visible

NEMIX RAM

NEMIX RAM 256GB DDR5-6400 ECC RDIMM Kit 2x128GB CL52 1.1V 2Rx4 Supermicro H14DST-F

SKU CH-Z4ZT-QSXW1

256 GB DDR5-6400 ECC registered RDIMM kit (2×128 GB, CL52, 1.1 V, 2Rx4) validated for Supermicro H14DST-F motherboards

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 256 GB kit installs at full rated DDR5-6400 speed
  • Verified fit for Supermicro H14DST-F motherboard 288-pin RDIMM slots
  • Registered ECC architecture prevents silent data corruption under full load
  • Dual-rank 2Rx4 organisation enables maximum capacity per channel
  • Major OEM Samsung, Micron or Hynix DRAM chips ensure enterprise reliability

Exact-match upgrade for Supermicro H14DST-F

This 256GB kit delivers two 128GB DDR5-6400 Registered ECC RDIMMs built to the Supermicro H14DST-F motherboard's precise rank, voltage and timing requirements. The modules arrive as a matched pair so the memory controller recognises full capacity at rated speed.

Who this suits and who it does not

The kit targets administrators expanding a Supermicro H14DST-F server that requires 288-pin Registered DIMMs with ECC and 2Rx4 organisation. Builders needing unbuffered UDIMMs, SODIMM form factors or non-ECC memory for workstations or consumer boards cannot use these modules.

DDR5-6400 Registered ECC specification

Each DIMM operates at 6400 MT/s with CL52 latency at 1.1V using a 2Rx4 layout. Registered buffering and on-die ECC let the motherboard run every slot fully populated while correcting single-bit errors before they affect production workloads.

How it compares

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

Price $9,139.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $35.70 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 numberMR51200-724K2
Total capacity256 GB (2 × 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 items256 GB 2 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 2Rx4 DDR5 ECC RDIMM modules need replacement after a certain number of write cycles?

DDR5 ECC RDIMM memory does not wear out from write cycles like flash storage; the 2Rx4 modules are rated for continuous server operation and only require replacement if a hardware fault occurs.

What limit appears first when the 256GB kit runs at DDR5-6400 CL52 continuously?

The memory controller on the Supermicro H14DST-F motherboard sets the sustained throughput ceiling; the kit operates at its rated 6400 MT/s and CL52 as long as the board's population rules are followed.

How much heat and power do the 1.1V 128GB RDIMMs generate during all-day operation?

Each 128GB module runs at 1.1V without a heat spreader; registered buffering reduces electrical load on the controller, so total power draw and thermal output stay within standard DDR5 RDIMM limits for dense server configurations.

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