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Two green DDR5 RDIMM modules, black chips, no heat spreader, 288-pin edge connectors

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 2x128GB CL52 1.1V ECC RDIMM Server Memory Upgrade

SKU CH-7V4V-TQNP4

256 GB dual-rank DDR5 ECC RDIMM kit running at 6400 MT/s with CL52 latency and 1.1 V operation, validated for Supermicro H14SSL-N servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 24 more
  • 256GB kit enables full-capacity server workloads with 2x128GB DDR5 6400 modules
  • Registered ECC architecture corrects single-bit errors preventing silent data corruption and unplanned reboots
  • 1V operation at CL52 latency matches controller expectations for stable rated-speed performance
  • 288-pin RDIMM form factor fits Supermicro H14SSL-N motherboard memory slots exactly
  • 2Rx4 dual-rank organization supports full population across all slots at maximum capacity

256GB DDR5 ECC RDIMM kit

This 256GB kit contains two 128GB DDR5 registered DIMMs built for Supermicro H14SSL-N motherboards. It targets administrators upgrading or expanding memory capacity in compatible server platforms. The modules run at 6400 MT/s with CL52 latency and 1.1V operation.

Registered 288-pin form factor

Each module uses a 288-pin RDIMM design with 2Rx4 organisation and on-board ECC. Registered buffering reduces electrical load on the memory controller when all slots are populated. The lack of a heat spreader means airflow across the PCB must be provided by the chassis.

Replaces smaller or slower DDR5 RDIMMs

The jump is worth it when your workload needs the full 256GB at rated 6400 speed and the motherboard supports this exact rank and voltage configuration. It is not for systems that require UDIMM, SODIMM, or non-ECC memory.

How it compares

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

Price $8,311.99
Pricier than about 85% 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 $32.47 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

Other versions of this model

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Questions about this item

Does DDR5 6400 (PC5-51200) run at 6400 MT/s on the Supermicro H14SSL-N?

Yes, the kit is rated DDR5 6400 (PC5-51200) and the motherboard supports that speed when populated per its memory rules.

Will these 288-pin RDIMMs fit the H14SSL-N DIMM slots?

The modules are 288-pin Registered RDIMMs, the exact form factor the H14SSL-N requires; UDIMMs or SODIMMs will not fit.

What population order should I follow when installing both 128 GB modules?

Consult the H14SSL-N manual for the approved DIMM population sequence; installing in the wrong slots can prevent the system from recognising the full 256 GB capacity.

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