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Twelve green DDR5 RDIMM modules in a row, no heat spreaders, gold edge connectors visible

NEMIX RAM

NEMIX RAM DDR5 768GB 12x64GB 4800MHz CL40 1.1V ECC RDIMM memory upgrade

SKU CH-8NVX-J9XQE

768 GB DDR5 server kit with twelve 64 GB registered ECC RDIMMs at 4800 MHz CL40 1.1 V for the GIGABYTE MZ73-LM1 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 18 more
  • 768 GB total capacity from twelve 64 GB modules for dense server workloads
  • DDR5-4800 speed with CL40 latency keeps data moving at rated throughput
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 1 V operation reduces power draw across the full 12-module kit
  • Verified fit for GIGABYTE MZ73-LM1 motherboard with 288-pin RDIMM form factor

Capacity and fit

This kit delivers 768 GB of DDR5 server memory in twelve 64 GB modules. It is built for the GIGABYTE MZ73-LM1 motherboard and other platforms that require registered ECC RDIMMs. Buyers who need unbuffered UDIMMs or laptop SODIMMs cannot use this product.

Registered ECC architecture

The single specification that decides compatibility is the registered (buffered) ECC RDIMM design with 2Rx4 organisation. This architecture offloads the memory controller so every slot runs fully populated at 4800 MT/s while ECC corrects single-bit errors on the fly. A board that only accepts unbuffered non-ECC memory will not recognise these modules.

Installation notes

Each module uses the standard 288-pin DDR5 RDIMM form factor and operates at 1.1 V with CL40 timing. Populate all twelve slots following the motherboard manual's exact population order; skipping the prescribed sequence is the most common cause of boot failure or reduced capacity. The modules have no heat spreaders, so ensure chassis airflow meets the server vendor's thermal guidelines.

How it compares

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

Price $19,968.99
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 $26.00 per GB
Pricier than about 71% 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 systemsGIGABYTE
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

Will the 4800 MHz speed hold when all 12 slots of the MZ73-LM1 are populated with this 768 GB kit?

Yes. The registered (buffered) design lets the memory controller drive every slot at the rated DDR5-4800 speed without down-clocking, so the full 768 GB runs at PC5-38400 bandwidth.

What does the PC5-38400 label actually limit on this motherboard?

PC5-38400 is the peak transfer rate of DDR5-4800; the MZ73-LM1 memory controller caps each channel at that rate, so total throughput scales with the number of populated channels rather than exceeding the spec.

Does the 288-pin RDIMM form factor fit the MZ73-LM1 DIMM slots without adapters?

Yes. The kit uses standard 288-pin DDR5 RDIMMs, which are the exact module type the MZ73-LM1 slots accept; no adapter or converter is needed.

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