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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM MR51200-724K4 512GB (4x128GB) DDR5 6400 ECC RDIMM memory upgrade

SKU CH-5TR3-0XH5J

A 512 GB DDR5 registered ECC server memory kit with four 128 GB modules running at 6400 MT/s and CL52 latency

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

  • 512 GB total capacity from four 128 GB modules
  • DDR5 6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects errors and supports full population
  • 10 V operation matches the motherboard's memory controller spec
  • Verified fit for ASRock Rack TURIN2D24XGM/500W motherboard

Targeted Server Upgrade

This 512 GB kit comprises four 128 GB DDR5 registered ECC RDIMMs built for the ASRock Rack TURIN2D24XGM/500W motherboard. Each module runs at DDR5 6400 (PC5-51200) with CL52 latency at 1.10 V in a 2Rx4 organisation. The registered design matches the board's required 288-pin form factor and population rules.

Sustained Load Behaviour

Registered buffering reduces electrical load on the memory controller so all four slots operate at rated speed when fully populated. On-die ECC detects and corrects single-bit errors in real time, preventing silent data corruption during continuous workloads. The 1.10 V operating voltage keeps power draw stable across extended duty cycles.

Build And Connector Implications

Modules ship without heat spreaders, relying on chassis airflow for thermal management. The 288-pin RDIMM keying prevents accidental insertion into UDIMM or SODIMM slots. Verify the motherboard manual for approved population order and maximum supported capacity before installation.

How it compares

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

Price $19,214.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $37.53 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 numberMR51200-724K4
Total capacity512 GB (4 × 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 systemsASRock Rack
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How much power does the 1.10 V 6400 MHz kit draw when the server runs continuously?

The modules operate at 1.10 V and DDR5 6400 speed; registered ECC architecture reduces electrical load on the memory controller, helping keep sustained power draw low in a fully populated 512 GB configuration.

What motherboard slot and population rules are required for this 288-pin RDIMM kit?

The kit needs a motherboard with 288-pin DDR5 RDIMM slots and must follow the board's validated population order — the ASRock Rack TURIN2D24XGM/500W is the verified platform.

Will these CL52 registered ECC modules work alongside other DDR5 RDIMMs I already own?

Mixing is only reliable when the existing DIMMs match the same 6400 MHz speed, CL52 latency, 1.10 V voltage, 2Rx4 rank and registered ECC specification; otherwise the system will down-clock or fail to boot.

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