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Two green DDR5 RDIMM modules, bare circuit boards with gold edge connectors, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400MHz ECC Registered RDIMM memory upgrade for GIGABYTE MZ23-SU0

SKU CH-PPV0-6BBDH

A 256 GB DDR5 6400 MHz registered ECC RDIMM kit validated for the GIGABYTE MZ23-SU0 motherboard

  • 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 capacity across two 128 GB modules enables full server density
  • DDR5-6400 speed with CL52 latency delivers rated throughput for GIGABYTE MZ23-SU0
  • Registered ECC design corrects single-bit errors and offloads the memory controller
  • 1 V operation matches the motherboard's voltage requirement for stable operation
  • 288-pin RDIMM form factor fits the exact slot specification of the target board

256GB DDR5-6400 ECC RDIMM Kit

This 256GB kit contains two 128GB DDR5-6400 Registered ECC RDIMMs built for the GIGABYTE MZ23-SU0 motherboard. It targets server administrators who need maximum supported capacity in a two-module configuration. The modules use 2Rx4 organisation, CL52 timing and 1.1V operation exactly as the platform expects.

Capacity and Headroom

Two 128GB RDIMMs fill two slots with 256GB total, allowing the memory controller to run every populated channel at the rated 6400 MT/s speed. Registered buffering offloads the controller so full population remains stable, while ECC corrects single-bit errors on the fly. Systems that require more than 256GB or a different rank structure cannot use this kit.

DDR5-6400 Registered Interface Limits

The DDR5-6400 (PC5-51200) Registered RDIMM interface delivers 6400 MT/s bandwidth with 288-pin mechanical keying that prevents insertion into UDIMM or SODIMM slots. CL52 latency and 1.1V voltage are fixed by the module's SPD profile. Boards that do not support Registered ECC DDR5 at this speed will not recognise the modules or will downclock them.

How it compares

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

Price $8,105.99
Pricier than about 84% 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 $31.66 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

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Questions about this item

Will this DDR5 6400MHz 2Rx4 Registered ECC kit run at full speed alongside existing DDR5 modules I keep in my GIGABYTE MZ23-SU0?

The kit is an exact-match upgrade specified for the MZ23-SU0 at DDR5 6400 (PC5-51200) with 2Rx4 registered ECC at 1.1V CL52; mixing ranks, speeds or voltages can prevent full-speed operation, so populate all slots per the board manual.

How can I confirm the 256GB kit is recognised at its rated DDR5 6400MHz CL52 after installation?

Enter the BIOS or UEFI and verify the memory frequency shows 6400 MT/s, timings read CL52, voltage reports 1.1V and total capacity reads 256GB across both 128GB modules.

What exactly ships in the box and do I need any extra brackets or cables?

The package contains only the 256GB (2 x 128GB) DDR5 6400MHz 288-pin ECC Registered RDIMM modules; no heat spreaders, brackets or cables are included or required.

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