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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 2x128GB CL52 2Rx4 ECC RDIMM Supermicro H13DSH memory upgrade

SKU CH-B291-A6JN6

256 GB (2 × 128 GB) DDR5-6400 ECC registered RDIMM kit, CL52 at 1.1 V, validated for the Supermicro H13DSH 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
  • 256 GB total capacity from a matched 2 x 128 GB kit
  • DDR5 6400 speed (PC5-51200) runs at the rated frequency on Supermicro H13DSH
  • Registered ECC architecture offloads the controller and corrects single-bit errors on the fly
  • 2Rx4 organisation with 1.1 V voltage matches the motherboard's memory-controller expectations
  • 288-pin RDIMM form factor fits the H13DSH slots and follows its population rules

Exact-match DDR5-6400 server upgrade

This 256 GB kit delivers two 128 GB DDR5-6400 PC5-51200 RDIMMs built to the precise rank, voltage and timing the Supermicro H13DSH memory controller expects. Registered ECC architecture with 2Rx4 organisation and CL52 latency ensures full-capacity recognition at rated speed for memory-intensive server workloads.

Sustained-load stability

Registered buffering offloads the memory controller so every populated slot runs at full capacity without signal degradation during continuous operation. On-die ECC catches and corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots that would interrupt production services.

Pre-installation checklist

Verify your H13DSH motherboard manual for approved DIMM population order, maximum supported capacity per slot and required BIOS version before ordering. Confirm the system accepts 288-pin Registered DDR5 RDIMMs at 1.1 V and that your chassis provides adequate airflow for modules without heat spreaders.

How it compares

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

Price $9,105.99
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 $35.57 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

How much power does the 1.1V DDR5 6400 kit draw when the Supermicro H13DSH runs all day?

Each module operates at 1.1V, the standard DDR5 voltage, so total power scales with the 256GB capacity and your server's memory-controller load.

What must the Supermicro H13DSH already have to accept this 2Rx4 288-pin RDIMM kit?

The board needs free 288-pin DDR5 RDIMM slots and a BIOS that supports 128GB 2Rx4 registered ECC modules at DDR5 6400.

Will this CL52 2Rx4 kit run at DDR5 6400 alongside slower DDR5 DIMMs I keep in the H13DSH?

The motherboard will clock all populated slots to the lowest common speed, so older DDR5 modules will pull this kit down from 6400 MT/s.

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