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Green bare circuit board with 288 gold pins and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 2Rx4 1.1V ECC Registered RDIMM GIGABYTE MZ73-LM0 memory upgrade

SKU CH-Z20Q-D3YQK

128 GB DDR5 6400 ECC registered RDIMM with CL52 latency, 2Rx4 organisation and 1.1 V operation, validated for the Gigabyte MZ73-LM0 motherboard

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

Size 128GB

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  • Full 128 GB capacity at DDR5 6400 speed
  • CL52 latency and 1.1 V for rated performance
  • Registered ECC design prevents silent data errors
  • 2Rx4 288-pin RDIMM matches board requirements
  • Verified fitment for GIGABYTE MZ73-LM0

Exact-match DDR5-6400 RDIMM for GIGABYTE MZ73-LM0

This 128 GB DDR5 6400 CL52 2Rx4 1.1 V ECC Registered RDIMM is built to the precise rank, voltage and timing the GIGABYTE MZ73-LM0 motherboard expects. It targets server administrators who need every slot populated at full rated speed without manual tuning.

Replaces slower or unbuffered modules that limit

The jump is worth it when your workload demands registered ECC stability at the board's native 6400 MT/s data rate and you must fill all DIMM slots with 128 GB modules. Builders staying with UDIMMs or lower-ranked DIMMs will hit population or bandwidth ceilings this kit removes.

Straightforward 288-pin RDIMM installation

Seat each module in the order the motherboard manual specifies; the registered buffer handles electrical loading so fully populated channels initialise cleanly. The common error is mixing ranks or skipping the prescribed population sequence, which prevents the system from recognising the full 128 GB per slot.

How it compares

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

Price $4,748.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $37.10 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-724K1
Total capacity128 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 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 288-pin RDIMM fit the GIGABYTE MZ73-LM0 motherboard slots?

Yes, the 288-pin registered DIMM is the exact form factor the MZ73-LM0 requires; it will not accept UDIMM or SODIMM modules.

Which slot order should I follow when installing the 128GB module?

Consult the MZ73-LM0 manual for the approved DIMM population sequence; installing in the wrong order can prevent the system from recognising the full 128GB capacity.

Will the ECC and registered features need any firmware updates later?

ECC error correction and registered buffering operate in hardware; no firmware maintenance is required, though a BIOS update may add support for higher capacities if released by Gigabyte.

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