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Two green DDR5 RDIMM modules, no heat spreaders, 288-pin gold contacts

NEMIX RAM

NEMIX RAM DDR5 6400 256GB (2×128GB) ECC RDIMM CL52 1.1V 2Rx4 Supermicro H14SHM

SKU CH-H93C-W08Z5

256 GB kit of two 128 GB DDR5-6400 ECC registered DIMMs with CL52 timing and 1.1 V operation, validated for Supermicro H14SHM 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
  • 256 GB total capacity in a matched 2×128 GB kit
  • DDR5-6400 speed with CL52 latency runs at rated frequency
  • Registered ECC design corrects single-bit errors for data integrity
  • 10 V operation reduces power draw per module
  • Validated for Supermicro H14SHM motherboard with 288-pin RDIMM form factor

Exact-Match Server Upgrade

This 256GB kit delivers two 128GB DDR5-6400 Registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro H14SHM memory controller expects. The modules operate at 1.10V with CL52 latency so the system recognises full capacity and runs at rated speed without manual tuning.

288-Pin Registered ECC Architecture

Registered buffering offloads the memory controller, allowing every populated slot to run at full capacity while on-die ECC corrects single-bit errors before they reach production workloads. The 2Rx4 organisation and 288-pin RDIMM form factor match the board's population rules, so no UDIMM or SODIMM alternatives will fit.

Sustained Enterprise Stability

ECC protection and registered signalling maintain data integrity across continuous, fully-populated operation rather than brief benchmark bursts. Major OEM Samsung, Micron or Hynix DRAM ensures consistent thermal and electrical behaviour under long-running server loads.

How it compares

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

Price $9,384.99
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 $36.66 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

Does the 1.1V operating voltage limit sustained throughput on the Supermicro H14SHM?

The kit runs at the standard DDR5 1.10V, which is the voltage the Supermicro H14SHM memory controller expects for DDR5-6400 operation.

How much heat do the 128GB RDIMMs produce when the server runs all day?

The modules have no heat spreader and operate at 1.10V; registered ECC RDIMMs at this voltage typically stay within normal server airflow limits without extra cooling.

Must the Supermicro H14SHM already have a specific BIOS version to recognise the 2Rx4 256GB kit?

The kit is spec-matched to the H14SHM's 288-pin RDIMM slots and DDR5-6400 registered ECC requirements; consult the motherboard manual for any BIOS update guidance before installing.

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