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Six green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB DDR5 4800 ECC RDIMM 6x128GB Supermicro H13DSG-O-CPU-D memory upgrade

SKU CH-YEEJ-CEYDM

768 GB DDR5-4800 ECC registered server memory kit in six 128 GB modules, CL40 at 1.1 V, 288-pin RDIMM form factor, validated for the Supermicro H13DSG-O-CPU-D motherboard

  • 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

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  • 768 GB total capacity from six 128 GB modules for large-scale workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput
  • Registered ECC architecture corrects single-bit errors and stabilises full population
  • 1 V operation matches the platform's voltage requirement exactly
  • 288-pin RDIMM form factor fits the Supermicro H13DSG-O-CPU-D motherboard

Exact-match server upgrade

This 768GB kit contains six 128GB DDR5 4800 RDIMM modules built to the Supermicro H13DSG-O-CPU-D motherboard's specifications. Each module runs at 1.1V with CL40 timing and 2Rx4 registered ECC architecture. The kit delivers the precise rank, voltage and timing the memory controller expects for full-capacity recognition at rated speed.

Enterprise workloads not consumer builds

Suited for administrators populating every slot on a supported Supermicro server where registered ECC stability and maximum capacity are required. Not suited for workstations or desktops that accept only unbuffered UDIMMs, nor for systems limited to lower densities or slower DDR5 speeds. Buyers needing SODIMM form factors or non-ECC memory should look elsewhere.

Six-slot population at full speed

The 288-pin registered design offloads the memory controller so all six slots operate at DDR5 4800 without signal degradation. ECC corrects single-bit errors on the fly to prevent silent data corruption in production. Verify your motherboard manual for approved population order and maximum supported capacity before installation. No heat spreaders are included.

How it compares

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

Price $25,090.99
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 $32.67 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

Other versions of this model

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Questions about this item

Does the Supermicro H13DSG-O-CPU-D motherboard need to be present for this 768GB kit to function?

Yes, this 6 x 128GB DDR5 4800 RDIMM kit is built specifically for the Supermicro H13DSG-O-CPU-D motherboard and requires that board's 288-pin registered DIMM slots to operate.

Can I mix these 2Rx4 DDR5 4800 CL40 modules with any existing RDIMMs already installed in the system?

Mixing ranks, speeds or latencies is not recommended; the motherboard's memory controller expects identical 2Rx4 DDR5 4800 CL40 1.1V modules in every populated slot for stable operation.

How can I verify the full 768GB is recognised and running at DDR5 4800 after installation?

Check the BIOS memory information screen or the operating system's memory report — both should show 768GB total capacity and a running speed of 4800 MT/s with CL40 timings.

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