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Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 6400 768GB 6x128GB CL52 ECC RDIMM Supermicro H13SST-GC

SKU CH-83NV-1EWJ6

A 768 GB DDR5-6400 registered ECC RDIMM kit of six 128 GB modules at CL52 and 1.1 V, validated for Supermicro H13SST-GC motherboards

  • 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 in a matched six-module kit
  • DDR5-6400 speed with CL52 latency for rated server performance
  • Registered ECC design corrects single-bit errors on the fly
  • 1 V operation meets the board's voltage specification
  • Verified fit for the Supermicro H13SST-GC motherboard

Exact-match upgrade for Supermicro H13SST-GC

This 768 GB kit contains six 128 GB DDR5 RDIMMs built to the exact rank, voltage and timing the server memory controller expects. Registered ECC architecture offloads the controller so every slot runs fully populated at the rated 6400 MT/s.

2Rx4 registered ECC at 1.10 V CL52

The modules are 288-pin DDR5 RDIMMs organised as 2Rx4 and specified at 1.10 V with CAS latency 52. This precise combination of rank structure, voltage and latency is what allows the motherboard to recognise the full 768 GB capacity and operate at PC5-51200 speed.

Sustained full-population stability

Registered buffering keeps electrical loading low across all six slots, while on-die ECC corrects single-bit errors continuously during long-running workloads. The result is consistent throughput without the unplanned reboots that silent data corruption can cause.

How it compares

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

Price $27,884.99
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 $36.31 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 the DDR5 6400 speed run at its rated 6400 MT/s once all six 128 GB modules are installed in the Supermicro H13SST-GC?

The kit is spec-matched to the H13SST-GC memory controller, so the full 768 GB populates every slot at the rated DDR5 6400 speed without down-clocking.

Does the PC5-51200 rating limit the usable bandwidth on this registered ECC memory?

PC5-51200 is the peak transfer rate for DDR5 6400; the registered buffer and ECC operate within that ceiling, so sustained throughput matches the rated figure.

Do the 288-pin RDIMM modules fit the H13SST-GC DIMM slots without adapters or special brackets?

Yes, the 288-pin registered form factor matches the board's native RDIMM slots exactly, allowing direct installation in the approved population order.

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