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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 6400 ECC RDIMM Supermicro X14SDV-32C-SP3F memory upgrade

SKU CH-KT69-7V9D5

128 GB DDR5 ECC registered RDIMM kit in four 32 GB modules at 6400 MT/s, CL52, 1.1 V for Supermicro X14SDV-32C-SP3F

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

  • Full 128 GB capacity with 4 x 32 GB modules for maximum slot utilisation
  • DDR5 6400 speed (PC5-51200) matching the board's rated frequency
  • Registered ECC architecture offloads the memory controller and corrects single-bit errors
  • 10 V operating voltage and CL52 latency tuned to the motherboard's memory controller
  • 288-pin RDIMM form factor verified for Supermicro X14SDV-32C-SP3F compatibility

Exact-match DDR5 kit for Supermicro X14SDV-32C-SP3F

This 128GB kit ships as four 32GB DDR5 6400 RDIMMs built to the precise rank, voltage and timing the Supermicro X14SDV-32C-SP3F motherboard expects. Registered ECC architecture lets every slot run fully populated at rated speed while correcting single-bit errors on the fly. The modules arrive new without heat spreaders and install in the board's 288-pin DDR5 slots.

Sustained-load stability with registered ECC

Registered buffering offloads the memory controller so all four slots operate at DDR5 6400 continuously without signal degradation. ECC detects and corrects single-bit errors in real time, preventing silent data corruption during long compute runs. The 1.1V operating voltage and CL52 latency remain stable across full-capacity workloads typical of server deployments.

Upgrade from partial or lower-capacity

The kit replaces mismatched or smaller DIMM sets that force the board to run at reduced speeds or capacities. Populating all channels with identical 2Rx4 modules enables the full 128GB at DDR5 6400 where mixed ranks or voltages would throttle performance. Builders who need more than 128GB or a different form factor such as UDIMM or SODIMM cannot use this kit.

How it compares

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

Price $4,537.99
Pricier than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $35.45 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 numberMR51200-324K4
Total capacity128 GB (4 × 32 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 items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 1.1V DDR5 modules run hot or noisy when the server operates continuously?

These DDR5 RDIMMs operate at 1.1V with no heat spreader, relying on chassis airflow; registered buffering reduces electrical load on the memory controller during sustained full-capacity operation.

What motherboard slot type and population rules must the Supermicro X14SDV-32C-SP3F already support for this kit to work?

The board must provide 288-pin DDR5 RDIMM slots and support 2Rx4 registered ECC modules at 6400 MT/s; consult the manual for approved DIMM population order before installing all four 32 GB sticks.

Can I keep existing DDR5 RDIMMs of a different speed or rank installed alongside this 6400 CL52 2Rx4 kit?

Mixing speeds or ranks forces all channels to the slowest common timing; for full 6400 MT/s stability the board should run a matched set of four 2Rx4 CL52 modules.

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