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Six green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 768GB 6x128GB DDR5-6400 CL52 ECC RDIMM Supermicro H13SSL-NT

SKU CH-S76X-KMJD7

A 768 GB DDR5-6400 registered ECC kit of six 128 GB modules built to the Supermicro H13SSL-NT memory controller's exact rank, voltage and timing requirements

  • Capacity768GB (6 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes
  • 768 GB total capacity from six 128 GB modules
  • DDR5-6400 speed with CL52 latency for rated throughput
  • Registered ECC design corrects single-bit errors automatically
  • 10 V operation matches server memory-controller requirements
  • Verified fitment for Supermicro H13SSL-NT motherboard

768GB DDR5-6400 ECC RDIMM Kit

This 768GB kit contains six 128GB DDR5-6400 registered ECC modules built for the Supermicro H13SSL-NT motherboard. It targets server administrators who need maximum supported capacity with error correction and registered buffering for stable full-population operation.

2Rx4 Registered Architecture

Each module uses a 2Rx4 organisation with CL52 latency at 1.10V, matching the memory controller requirements of the H13SSL-NT. The registered design offloads electrical load so all six slots run at the rated DDR5-6400 speed without downclocking.

For H13SSL-NT Full Population

Suited for operators filling every DIMM slot on this specific Supermicro board with validated ECC RDIMMs. Not for systems that require unbuffered UDIMMs, SODIMM form factors, or lower-density modules outside the 128GB-per-DIMM specification.

Highlights

  • 768 GB total capacity from six 128 GB modules
  • DDR5-6400 speed with CL52 latency for rated throughput
  • Registered ECC design corrects single-bit errors automatically
  • 10 V operation matches server memory-controller requirements
  • Verified fitment for Supermicro H13SSL-NT motherboard

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-724K6
Capacity768GB (6 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content768GB 6X128GB DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM KIT

Questions about this item

Will this kit run at 6400 MT/s once installed in a Supermicro H13SSL-NT?

The modules are rated DDR5-6400 CL52 at 1.10 V. When populated in the supported slots of that motherboard, the memory controller will recognise the SPD profile and operate the kit at its rated 6400 MT/s speed.

Does the 288-pin RDIMM form factor and registered buffer match what the H13SSL-NT expects?

Yes. The kit uses 288-pin DDR5 RDIMMs with registered buffering and ECC, which is the exact module type the H13SSL-NT memory slots are designed to accept.

What physical clearance should I allow for these 128 GB modules in a 1U or 2U chassis?

The DIMMs have no heat spreader, so they sit at the standard low-profile height for registered DDR5 modules. This keeps them compatible with the tight clearances found in 1U and 2U server chassis.

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