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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 6400MHz CL52 1.1V 2Rx4 ECC RDIMM memory upgrade for ASRock Rack W890D8-2L2T

SKU CH-M9SE-444NM

Eight 64 GB DDR5 ECC RDIMM modules running at 6400 MHz with CL52 latency and 1.1 V operation

  • Total capacity512 GB (8 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 512 GB total capacity from eight 64 GB modules
  • DDR5 6400 MHz speed for high-throughput server workloads
  • ECC registered design detects and corrects data errors
  • Low 1.10 V operating voltage reduces power draw
  • 288-pin RDIMM form factor fits ASRock Rack W890D8-2L2T

System-specific DDR5 ECC kit

This 512 GB kit contains eight 64 GB DDR5 registered DIMMs built for the ASRock Rack W890D8-2L2T motherboard. It targets administrators expanding memory capacity in compatible enterprise servers and workstations.

Sustained-load behaviour

ECC circuitry detects and corrects single-bit errors during continuous operation, helping maintain data integrity under heavy, long-running workloads. Registered buffering reduces electrical load on the memory controller when all eight slots are populated.

Build and connectors

Each module uses a 288-pin DDR5 RDIMM form factor without a heat spreader, relying on chassis airflow for cooling. The 2Rx4 organisation and 1.10 V operating voltage are matched to the qualified platform specifications.

How it compares

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

Price $16,676.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $32.57 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 numberMR51200-924K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items512 GB (8 × 64 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much power does the 8-module DDR5 6400 kit draw at its rated 1.10V during continuous server workloads?

Each 64GB RDIMM runs at 1.10V; total draw depends on the platform's memory controller and load, so consult the ASRock Rack W890D8-2L2T manual for system-level figures.

What motherboard features must my ASRock Rack W890D8-2L2T already provide for this 512GB ECC RDIMM kit to function?

The board must support DDR5 6400 RDIMM, registered ECC, 2Rx4 organisation and 288-pin slots across eight channels.

Will the CL52 2Rx4 modules work reliably alongside any existing DDR5 RDIMMs I keep in the same W890D8-2L2T system?

Mixing ranks or latencies can force the memory controller to run all channels at the slowest common timing; populate all eight slots with this matched kit for guaranteed stability.

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