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Green bare circuit board DDR5 RDIMM module with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 64GB DDR5 6400 2Rx4 CL52 1.1V ECC RDIMM Supermicro H14SSF memory upgrade

SKU CH-SMW1-30YDX

64 GB DDR5-6400 registered ECC RDIMM built for the Supermicro H14SSF motherboard

  • Total capacity64 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB DDR5 6400 capacity ready for demanding server workloads
  • CL52 CAS latency matched to the memory controller for rated-speed operation
  • 10 V DDR5 voltage reduces power draw in fully populated systems
  • 2Rx4 registered ECC architecture corrects single-bit errors and stabilises full-slot configurations
  • 288-pin RDIMM form factor verified for Supermicro H14SSF motherboard compatibility

Exact-fit DDR5 RDIMM for Supermicro H14SSF

This 64GB DDR5 6400 Registered ECC module matches the Supermicro H14SSF motherboard's required 288-pin RDIMM form factor. The 2Rx4 rank structure, 1.1V operating voltage and CL52 latency align with the board's memory controller expectations for full-capacity recognition at rated speed. It is built for servers that demand registered architecture and error correction in every slot.

Enterprise-grade registered ECC stability

Registered buffering reduces electrical load on the memory controller, allowing full population of all slots without signal degradation. On-die ECC detects and corrects single-bit errors in real time, preventing silent data corruption and unplanned reboots in production workloads. The module uses major OEM DRAM from Samsung, Micron or Hynix and ships without a heat spreader for dense rack configurations.

Replaces slower or smaller DDR5 RDIMMs in H14SSF

Upgrading from lower-capacity or lower-speed registered DDR5 modules restores headroom for virtualisation, databases and memory-bound compute. The jump is worth it when the platform's qualified-vendor list confirms 64GB 2Rx4 6400 support and the population rules allow the target slot layout. Buyers needing UDIMM, SODIMM or non-ECC memory cannot use this module.

How it compares

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

Price $1,910.99
Pricier than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $29.86 per GB
Pricier than about 85% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-924K1
Total capacity64 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 items64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does DDR5 6400 PC5-51200 run at 6400 MT/s on the Supermicro H14SSF?

The module is rated DDR5 6400 (PC5-51200) and the H14SSF memory controller supports that speed, so it operates at 6400 MT/s when installed in a supported slot configuration.

Will this 288-pin RDIMM fit the H14SSF DIMM slots?

Yes, the H14SSF uses 288-pin DDR5 RDIMM slots and this module matches that exact form factor; UDIMM or SODIMM modules would not seat correctly.

What population order does the H14SSF manual specify for a single 64 GB RDIMM?

Install the module in the first slot of the first channel (usually CPU1 DIMM A1) as the manual directs, then add further modules following the board's approved sequence to avoid a no-post condition.

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