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Two green circuit boards with black memory chips, gold edge connectors, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 2x128GB CL52 ECC RDIMM GIGABYTE MZ73-LM2 memory upgrade

SKU CH-1509-G92BG

A 256 GB DDR5 6400 ECC RDIMM kit built for the GIGABYTE MZ73-LM2 server board

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 24 more
  • 256 GB total capacity from two 128 GB modules for high-density server workloads
  • DDR5 6400 speed with CL52 latency delivers rated bandwidth for the GIGABYTE MZ73-LM2
  • Registered ECC RDIMM design corrects single-bit errors and supports full-slot population
  • 10 V operation matches the motherboard memory-controller specification exactly
  • 288-pin 2Rx4 form factor ensures mechanical and electrical compatibility with the target platform

Exact-match server upgrade

This 256 GB kit contains two 128 GB DDR5 RDIMM modules rated at 6400 MT/s with CL52 latency and 1.1 V operation. It is built for the GIGABYTE MZ73-LM2 motherboard and targets administrators who need registered ECC memory that runs at full capacity across every populated slot.

Verify board population rules

The MZ73-LM2 requires 288-pin registered DIMMs and follows specific population orders that differ by CPU configuration. Check the motherboard manual for approved capacities per channel, slot-filling sequence, and any BIOS revision notes before installing these 2Rx4 modules.

Registered ECC stability daily

Registered buffering reduces electrical load on the memory controller so all slots remain stable when fully populated, while on-die ECC corrects single-bit errors without halting the system. The modules ship without heat spreaders, so chassis airflow must handle thermal dissipation in dense server configurations.

How it compares

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

Price $8,933.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $34.90 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 numberMR51200-724K2
Total capacity256 GB (2 × 128 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 items256 GB 2 × 128 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

Does the 256 GB 2 x 128 GB kit include everything needed to populate two DDR5 RDIMM slots on a Gigabyte MZ73-LM2 motherboard?

Yes, the kit ships as a matched pair of two 128 GB registered ECC RDIMMs so you can fill two 288-pin slots immediately without buying extra modules.

Should I choose this 256 GB CL52 kit or a lower-capacity alternative for the MZ73-LM2?

Pick this 2 x 128 GB kit when the workload needs the full 256 GB registered ECC capacity at DDR5-6400; smaller kits exist but will not provide the same total memory.

What does the DDR5-6400 (PC5-51200) rating mean once the modules are installed in the server?

The memory controller will run the RDIMMs at 6400 MT/s with CL52 latency at 1.1 V, delivering the rated bandwidth and ECC error correction the platform expects.

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