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Two bare green DDR5 RDIMM modules side by side

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 5600 ECC RDIMM CL46 2Rx4 1.1V ASRock WRX90 WS EVO

SKU CH-MKWJ-1V9JV

128 GB DDR5 ECC registered server memory kit, two 64 GB modules at 5600 MHz CL46 1.10 V for ASRock WRX90 WS EVO motherboards

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 128GB 2X64GB

  • 128 GB total capacity for demanding server workloads
  • DDR5 5600 speed with PC5-44800 bandwidth for high throughput
  • ECC registered RDIMM ensures data integrity in critical environments
  • 2Rx4 dual-rank organisation optimises memory density per channel
  • 1 V operation reduces power draw in multi-DIMM configurations

Capacity and Configuration

This kit provides 128GB of DDR5 memory across two 64GB modules. It is built for workstations and servers that require large memory footprints for virtualization, rendering or scientific workloads. The registered design with ECC ensures data integrity under sustained heavy loads. The dual-rank 2Rx4 organization maximizes density per channel.

Speed, Latency and Voltage

The modules run at DDR5 5600 (PC5-44800) with a CAS latency of CL46 at 1.10V. This combination delivers high throughput for memory-bound applications while maintaining stability through error correction. Headroom is limited to the rated JEDEC profile; overclocking is not supported on registered server DIMMs. Workloads exceeding 128GB will require additional kits and motherboard capacity.

Platform Compatibility and Form Factor

The 288-pin RDIMM form factor fits only DDR5 RDIMM slots on compatible server and workstation boards. This kit is validated for the ASRock WRX90 WS EVO motherboard. Systems requiring unbuffered UDIMMs, non-ECC memory or a different pin count cannot use these modules. Buyers needing higher frequencies or lower latencies must select a different memory class.

How it compares

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

Price $3,624.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.32 per GB
Pricier than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR5 5600 MHz ECC RDIMM Registered Server Memory
Part numberMR44800-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (2 × 64 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

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Questions about this item

Will these 2Rx4 RDIMMs work with other DDR5 5600 modules I already have in the ASRock WRX90 WS EVO?

Mixing ranks or speeds can prevent the system from training at 5600. For stable operation, populate all slots with identical 2Rx4 5600 modules.

How do I confirm the kit is running at 5600 with ECC active after install?

Enter the BIOS and verify the memory frequency reads 5600 MT/s and ECC is reported as enabled. The OS should also show 128 GB total with corrected-error counters at zero.

Does the MR44800-924K2 kit include a heat spreader or any cables?

The modules ship without heat spreaders. The box contains only the two 64 GB DDR5 5600 ECC RDIMMs; no cables or brackets are included.

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