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

NEMIX RAM

NEMIX RAM 768GB 12x64GB DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM memory upgrade

SKU CH-GWHX-SR5A8

A 768GB DDR5 ECC RDIMM kit of 12 64GB modules running at 6400MHz CL52 1.1V 2Rx4, registered for full-capacity stability on the Gigabyte MZ73-LM1 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

Size 768GB 12X64GB

Show 24 more
  • 768 GB total capacity from 12 matched 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.10 V standard voltage
  • Registered ECC RDIMM architecture for full-slot stability and error correction
  • 2Rx4 dual-rank organisation optimised for dense server memory populations
  • Verified compatibility with GIGABYTE MZ73-LM1 motherboard memory requirements

Exact-match server kit

This 768GB kit contains twelve 64GB DDR5 RDIMMs rated at 6400MHz with CL52 latency and 1.10V operation. Registered ECC design and 2Rx4 organisation match the GIGABYTE MZ73-LM1 motherboard requirements for full-capacity recognition at rated speed.

768GB capacity and headroom

Twelve populated slots deliver the maximum 768GB this board supports when every DIMM socket is filled with registered modules. The buffered architecture keeps the memory controller stable at that density, while ECC corrects single-bit errors before they affect production workloads.

DDR5 RDIMM interface limits

The 288-pin registered form factor is mandatory for this platform; UDIMM or SODIMM modules will not fit or function. Rated DDR5 6400 (PC5-51200) sets the ceiling — the kit will not exceed that transfer rate, and population rules in the motherboard manual determine whether all twelve slots can run simultaneously at the rated speed.

How it compares

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

Price $24,471.99
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 $31.86 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 systemsGIGABYTE
In the box
Included items768 GB 12 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 2Rx4 288-pin DDR5 RDIMM kit work in the GIGABYTE MZ73-LM1 alongside any existing DDR5 RDIMMs I keep?

Mixing different ranks, speeds or capacities can prevent the server from booting or force all slots to the slowest module; the board manual lists the approved population order for full 12-slot operation.

How can I confirm the kit runs at DDR5 6400 CL52 1.10V after installation?

Open the BIOS or UEFI and check that the memory frequency reads 6400 MT/s, latency shows CL52 and voltage is set to 1.10V; then run a full memory test to verify error-free operation.

Does the MR51200-924K12 package include anything besides the twelve 64GB DDR5 RDIMMs?

The box contains only the 12x64GB DDR5 6400 CL52 1.10V 288-pin ECC Registered RDIMM modules; no cables, brackets or software are supplied.

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