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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400 CL52 2Rx4 ECC RDIMM Supermicro H14DSG-OD memory upgrade

SKU CH-VA54-97SXQ

256GB DDR5-6400 CL52 ECC registered dual-rank kit validated for the Supermicro H14DSG-OD motherboard

  • 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 DDR5-6400 CL52 2Rx4 registered ECC kit installs at rated speed on Supermicro H14DSG-OD
  • 256 GB (2 × 128 GB) matches the board's memory-population rules for full-capacity recognition
  • Registered architecture offloads the controller so every slot runs fully populated at 1.1 V
  • On-die ECC corrects single-bit errors on the fly preventing silent data corruption in production
  • Major OEM Samsung, Micron or Hynix chips deliver enterprise-grade stability for server workloads

Exact-match DDR5 upgrade

This 256 GB kit contains two 128 GB DDR5-6400 RDIMMs built to the precise rank, voltage and timing the Supermicro H14DSG-OD memory controller expects. It is for administrators who need the full 256 GB recognised at rated speed without manual tuning.

Registered ECC architecture

The 288-pin registered design offloads the memory controller so every slot runs fully populated at 6400 MT/s, while on-die ECC corrects single-bit errors before they reach production workloads. The modules require a motherboard that accepts DDR5 RDIMMs and follows the board's population rules.

Two-module kit only

The package supplies exactly two 128 GB DIMMs with no heat spreaders, cables or software utilities. Buyers who need a different capacity, mixed-rank configuration or UDIMM form factor must source a separate kit validated for their specific platform.

How it compares

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

Price $9,020.99
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 $35.24 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 CL52 latency hold when all DIMM slots on the H14DSG-OD are populated?

The 2Rx4 registered design offloads the memory controller so every slot runs fully populated at the rated DDR5-6400 speed and CL52 timing.

How much heat and power should I expect from the kit running 24/7?

Each module operates at 1.1 V with no heat spreader, so power draw stays low and thermals are managed by normal server airflow.

What must the motherboard already support for this 256 GB kit to be recognised?

The board must accept 288-pin DDR5 RDIMMs, support 128 GB per slot, and implement registered ECC with 2Rx4 rank configuration.

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