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Twelve green DDR5 RDIMM modules without heat spreaders in a kit box

NEMIX RAM

NEMIX RAM 384GB (12 x 32GB) DDR5 4800 CL40 1.1V 2Rx8 ECC Registered RDIMM Kit for Supermicro H13DSG-O-CPU

SKU CH-J751-1TZBV

A 384 GB DDR5 kit of twelve 32 GB registered ECC RDIMMs running at 4800 MT/s CL40 1.1 V, validated for the Supermicro H13DSG-O-CPU motherboard

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 384GB 12X32GB

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  • 384GB total capacity from twelve 32GB modules for dense server workloads
  • DDR5 4800 speed with CL40 latency matches rated motherboard timing
  • 1V registered ECC design reduces controller load and corrects single-bit errors
  • 2Rx8 288-pin RDIMM form factor fits Supermicro H13DSG-O-CPU population rules
  • Lifetime replacement warranty with US-based technical support included

Exact-match 384GB DDR5 kit

This 384GB kit contains twelve 32GB DDR5-4800 registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro H13DSG-O-CPU motherboard expects. It is intended for administrators who need to populate every slot at full rated capacity without manual tuning.

Registered 288-pin RDIMM form factor

Each module uses the 288-pin registered RDIMM layout this board requires, not UDIMM or SODIMM, and operates at 1.1V with CL40 latency. The registered architecture buffers address and command signals so all twelve slots remain stable when fully populated, while on-die ECC corrects single-bit errors before they affect production workloads.

DDR5-4800 bandwidth ceiling

The PC5-38400 interface caps peak transfer rate at the DDR5-4800 specification, so throughput cannot exceed that limit regardless of CPU capability. Population rules and maximum supported capacity vary by motherboard revision, so the system manual must be consulted before installation to confirm supported configurations.

How it compares

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

Price $9,656.99
Pricier than about 87% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $25.15 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-328K12
Total capacity384 GB (12 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items384 GB 12 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does this DDR5 4800 kit run at PC5-38400 speed on the Supermicro H13DSG-O-CPU?

The modules are rated DDR5 4800 (PC5-38400) with CL40 latency and 1.1 V operation, matching the board's supported memory standard.

Will these 288-pin RDIMMs physically fit the Supermicro H13DSG-O-CPU memory slots?

The kit uses 288-pin registered RDIMM form factor, which is the exact module type the H13DSG-O-CPU motherboard requires.

What is the correct population order for all 12 modules on this motherboard?

Install the DIMMs following the population sequence shown in the Supermicro H13DSG-O-CPU manual; the board's memory-controller topology dictates the slot order for full 12-module operation.

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