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Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6×128GB) DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM Supermicro H13SST-G

SKU CH-9WA9-NE0NG

A 768 GB DDR5 ECC registered memory kit of six 128 GB modules running at 6400 MT/s with CL52 latency and 1.1 V, validated for the Supermicro H13SST-G motherboard

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB total capacity with six 128 GB modules
  • DDR5 6400 speed rated at PC5-51200 bandwidth
  • CL52 latency at 1.1 V for efficient operation
  • Registered ECC RDIMM design prevents data errors
  • Verified compatibility with Supermicro H13SST-G motherboard

Exact-match kit for Supermicro H13SST-G

This 768GB kit contains six 128GB DDR5 RDIMMs built to the Supermicro H13SST-G memory-population rules. Registered ECC architecture lets every slot run fully populated at the rated 6400 MT/s speed. It targets administrators who need maximum capacity without mixing modules.

Capacity and headroom at 768GB

Six 2Rx4 ranks deliver 768GB at CL52 and 1.10V, giving headroom for large in-memory databases and virtualization clusters. The registered buffer offloads the memory controller so all channels stay stable at full population. Workloads that exceed 768GB or need faster latency than CL52 will require a different platform.

Build integration requirements

The 288-pin RDIMM form factor fits only boards that accept registered DDR5; it will not work in UDIMM or SODIMM slots. Verify the motherboard manual for approved DIMM population order before installation. No heat spreader is included, so chassis airflow must handle thermal load.

How it compares

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

Price $25,484.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $33.18 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 numberMR51200-724K6
Total capacity768 GB (6 × 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 items768 GB 6 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will this 768GB DDR5 6400 kit work in a Supermicro H13SST-G that currently has smaller RDIMMs installed?

The kit is verified for the H13SST-G and uses the 288-pin RDIMM form factor that board requires. Consult the motherboard manual for approved population order and maximum capacity per channel before mixing with existing modules.

How can I confirm the 6×128GB modules are running at DDR5 6400 CL52 1.1V after installation?

Enter the BIOS or use a tool such as dmidecode to verify each DIMM reports 6400 MT/s, CAS latency 52, 1.1 V operation and ECC registered status. The server POST screen will also show the total 768 GB recognized.

Does the package include only the six 128GB RDIMMs or are heat spreaders and installation hardware also supplied?

The kit contains the six 128 GB DDR5 6400 RDIMMs only. No heat spreaders or extra mounting hardware are included; the modules install directly into the motherboard's 288-pin DIMM slots.

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