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Two green circuit boards with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM MR51200-924K2 128GB 2x64GB DDR5 6400 CL52 1.1V ECC RDIMM memory upgrade for GIGABYTE MZ73-LM1

SKU CH-TF9A-DQKR0

128 GB DDR5 6400 CL52 ECC registered RDIMM kit with two 64 GB modules at 1.1 V, validated for the GIGABYTE MZ73-LM1 motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

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  • 128 GB total capacity from two 64 GB modules for maximum server density
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for Gigabyte MZ73-LM1
  • Registered ECC architecture corrects single-bit errors to prevent silent data corruption
  • 10 V operation at 2Rx4 rank matches the board's memory controller requirements
  • 288-pin RDIMM form factor ensures correct physical and electrical fit in every slot

128GB DDR5 RDIMM kit for GIGABYTE MZ73-LM1

This NEMIX RAM kit delivers 128GB across two 64GB DDR5-6400 Registered ECC modules. It matches the exact rank, voltage and timing the GIGABYTE MZ73-LM1 memory controller expects for full-capacity recognition at rated speed. The 288-pin RDIMM form factor is the only type this board accepts.

Upgrade from lower-capacity or unbuffered DDR5

Replacing smaller RDIMMs or non-ECC UDIMMs with this 2Rx4 Registered kit enables the board to run every slot fully populated at 6400MT/s while adding on-the-fly single-bit error correction. The jump is worth it when workloads demand maximum registered capacity and data integrity without unplanned reboots.

DDR5 RDIMM platform limits

Registered DDR5 architecture offloads the memory controller so all slots operate at full capacity, but the motherboard manual still governs supported populations and installation order. Buyers who need more storage than 128GB or who require UDIMM or SODIMM form factors cannot use this kit.

How it compares

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

Price $4,592.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $35.88 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 numberMR51200-924K2
Total capacity128 GB (2 × 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 items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 288-pin RDIMM modules fit the GIGABYTE MZ73-LM1 motherboard DIMM slots?

Yes, the kit uses the 288-pin DDR5 RDIMM form factor required by the GIGABYTE MZ73-LM1 motherboard. It is not a UDIMM or SODIMM, so it matches the board's physical slot specification exactly.

What is the correct installation order for the two 64GB modules on this board?

Install the modules in the DIMM slots specified by the GIGABYTE MZ73-LM1 manual for a two-DIMM population. The motherboard manual defines the approved population order; following it ensures the memory controller recognizes both 64GB modules at the rated DDR5 6400 speed.

When should the ECC RDIMM modules be replaced in a production server?

Replace modules if the system logs report uncorrectable ECC errors, repeated correctable error thresholds are exceeded, or the server fails memory diagnostics during POST. Registered ECC RDIMMs correct single-bit errors on the fly, but persistent faults indicate hardware degradation requiring replacement.

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