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Six green DDR5 RDIMM modules without heat spreaders in a static-safe tray

NEMIX RAM

NEMIX RAM 768GB 6x128GB DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM Kit Supermicro H13SSW

SKU CH-K6WX-GQ6R4

Six 128 GB DDR5 registered ECC modules deliver 768 GB at 4800 MT/s with CL40 latency and 1.1 V operation for the Supermicro H13SSW

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

Show 24 more
  • 768 GB total capacity with six 128 GB modules for maximum server density
  • DDR5 4800 speed delivers PC5-38400 bandwidth for high-throughput workloads
  • CL40 latency and 1.1 V operation keep timing tight and power efficient
  • 2Rx4 registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 288-pin RDIMM form factor verified for Supermicro H13SSW motherboard compatibility

Capacity and compatibility

This 768 GB kit contains six 128 GB DDR5 RDIMM modules built for the Supermicro H13SSW motherboard. Registered ECC architecture and 2Rx4 organisation match the board's population rules so the full capacity is recognised at the rated 4800 MT/s speed.

Sustained load behaviour

Registered buffering reduces electrical load on the memory controller, allowing all six slots to remain populated at full frequency during continuous workloads. ECC corrects single-bit errors in real time, preventing silent data corruption and unplanned reboots in production environments.

Thermals noise and power

Modules operate at 1.1 V without heat spreaders, relying on server chassis airflow for cooling. Low voltage and the absence of active cooling components keep power draw modest and acoustic output negligible in typical rack deployments.

How it compares

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

Price $24,530.99
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 $31.94 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 numberMR38400-724K6
Total capacity768 GB (6 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
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 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How much heat does the 1.1 V DDR5 kit produce when the Supermicro H13SSW runs fully populated all day?

The modules operate at 1.10 V without a heat spreader; registered buffering reduces electrical load on the memory controller, so thermal output stays within standard DDR5 limits for 2Rx4 RDIMMs in a 6-DIMM configuration.

What must the Supermicro H13SSW motherboard already provide for this 6 x 128 GB kit to function?

The board needs six free 288-pin DDR5 RDIMM slots, a memory controller that accepts 2Rx4 registered ECC at 4800 MT/s, and BIOS support for 768 GB total capacity following the manual's population rules.

Will the CL40 registered ECC modules run at rated speed alongside any existing DDR5 RDIMMs already installed in the H13SSW?

All slots must use identical 2Rx4 registered ECC DDR5-4800 modules; mixing ranks, speeds or latencies forces the controller to down-clock or disable channels, so the kit is intended as a complete 768 GB matched set.

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