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Twelve green DDR5 RDIMM modules in a row, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 768GB 12x64GB 4800 CL40 ECC RDIMM Supermicro H14SHM

SKU CH-5HER-168GS

A 768GB kit of twelve 64GB DDR5-4800 CL40 ECC registered RDIMMs at 1.1V, validated for the Supermicro H14SHM motherboard

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 12X64GB

Show 24 more
  • 768GB total capacity for memory-intensive workloads
  • 12 x 64GB modules fill every slot on the Supermicro H14SHM
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC architecture prevents silent data corruption
  • 1V operation at 2Rx4 rank matches controller expectations

Exact-match 768GB DDR5 kit

This NEMIX RAM kit delivers 768GB of DDR5 4800 ECC registered memory in a 12-module configuration of 64GB each. It is built for the Supermicro H14SHM motherboard and uses the 288-pin RDIMM form factor that board requires. The modules operate at 1.10V with CL40 latency and a 2Rx4 rank structure.

Registered ECC changes capacity limits

The registered architecture buffers address and command signals so the memory controller can drive all twelve slots at full rated speed without signal degradation. ECC circuitry detects and corrects single-bit errors on the fly, preventing silent data corruption that can crash production workloads. These two features together enable the full 768GB population.

Verify population rules first

Server memory support varies by model and BIOS revision. Check the H14SHM manual for approved DIMM population order, maximum capacity per channel, and any required firmware updates before installing this kit. Incorrect slot placement can leave capacity unrecognised or prevent the system from booting.

How it compares

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

Price $20,308.99
Pricier than about 91% 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 $26.44 per GB
Pricier than about 73% 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 numberMR38400-924K12
Total capacity768 GB (12 × 64 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 12 × 64 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

How often will the 12 DDR5 RDIMMs need to be replaced in a continuously running server?

The modules are new, have no moving parts, and carry a lifetime replacement warranty, so they only need replacement if a hardware fault develops.

What limits sustained throughput when all 12 slots are populated at 4800 MT/s?

The memory controller on the Supermicro H14SHM manages the 768 GB total capacity and 2Rx4 registered signal integrity, which sets the practical ceiling.

How much heat and power does the 768 GB kit generate at 1.1 V during all-day operation?

Each 64 GB RDIMM runs at 1.1 V with no heat spreader, so total power scales with the 12 modules and the board’s registered buffering overhead.

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