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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 768GB 12x64GB 6400MHz CL52 1.1V 2Rx4 ECC RDIMM Supermicro H13SST-GC

SKU CH-032D-XRK61

A 768 GB DDR5 6400 MHz registered ECC RDIMM kit with 12 modules of 64 GB each, CL52 latency, 1.1 V, 2Rx4 organisation, validated for the Supermicro H13SST-GC motherboard

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB total capacity from twelve 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.1 V
  • ECC and registered design prevents data errors under load
  • 2Rx4 dual-rank layout fully populates all twelve slots
  • Verified fit for Supermicro H13SST-GC motherboard

Exact-fit DDR5 RDIMM kit

This NEMIX RAM kit delivers 768 GB across twelve 64 GB DDR5-6400 RDIMMs. Registered ECC modules with 2Rx4 organisation and CL52 timing run at 1.1 V, matching the Supermicro H13SST-GC memory controller requirements for full-capacity recognition.

Upgrade from partial or slower populations

Replacing a smaller or mixed-speed DIMM set with this twelve-module kit lets the board run every slot at the rated 6400 MT/s data rate. The jump is worth it when the workload demands the full 768 GB address space and the registered buffer that keeps all channels stable at maximum population.

Sustained-load behaviour

Registered architecture offloads the memory controller so signal integrity holds across all twelve slots during continuous operation. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots during long-running server tasks.

How it compares

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

Price $25,478.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 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 numberMR51200-924K12
Total capacity768 GB (12 × 64 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 12 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 288-pin RDIMM modules fit the Supermicro H13SST-GC motherboard slots?

Yes, the 288-pin Registered RDIMM form factor matches the slots on the Supermicro H13SST-GC motherboard; UDIMM or SODIMM modules will not fit.

What is the correct population order for all 12 modules on the H13SST-GC board?

Consult the motherboard manual for the approved DIMM population sequence; the board's memory-controller rules dictate the exact slot order for full 768 GB capacity.

Do these 1.1 V DDR5 modules need active cooling or heatsink replacement over time?

The modules ship without a heat spreader and run at the standard 1.1 V; no active cooling or heatsink replacement is required under normal server airflow.

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