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Two green DDR5 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 5600 CL46 4Rx4 ECC RDIMM WRX90 EVO memory upgrade

SKU CH-2K1Z-8DEEY

A 256 GB DDR5 ECC registered server memory kit with two 128 GB modules at 5600 MHz, CL46 latency, 1.1 V, 4Rx4 organisation and 288 pins, validated for the ASRock WRX90 WS EVO motherboard

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 256GB 2X128GB

  • 256GB total capacity in a 2-module kit
  • DDR5 5600 speed rated at PC5-44800
  • ECC registered RDIMM for server reliability
  • 4Rx4 organisation with CL46 latency
  • 10V operating voltage on 288-pin DDR5 modules

Server-grade DDR5 ECC RDIMM kit

This 256 GB kit contains two 128 GB registered DDR5 modules rated at 5600 MT/s with CL46 latency. It is built for the ASRock WRX90 WS EVO motherboard and targets workstation or server workloads that require error-correcting memory.

Registered design with no heat spreader

The 4Rx4 modules operate at 1.1 V and use a standard 288-pin DDR5 RDIMM form factor. Without a heat spreader the modules fit tightly spaced DIMM slots, while the registered buffer reduces electrical load on the memory controller for stable operation under sustained load.

DDR5 5600 bandwidth ceiling

The PC5-44800 rating sets the maximum theoretical throughput for this kit. Workloads that scale beyond this data rate will need faster memory or additional channels, and the fixed CL46 timing limits latency tuning for latency-sensitive applications.

How it compares

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

Price $8,203.99
Pricier than about 85% 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 $32.05 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 lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR5 5600 MHz ECC RDIMM Registered Server Memory
Part numberMR44800-744K2
Total capacity256 GB (2 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items256 GB (2 × 128 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

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Questions about this item

What speed and bandwidth does the DDR5 5600 PC5-44800 rating deliver?

The kit runs at 5600 MT/s with a PC5-44800 peak bandwidth rating, matching the DDR5 5600 standard for registered server memory.

What physical slot and form factor are required for these 288-pin RDIMMs?

Each module is a 288-pin DDR5 RDIMM; the motherboard must provide DDR5 RDIMM slots with registered-buffer support.

How are the two 128 GB modules installed on the WRX90 EVO, and what step is often missed?

Insert both modules into the correct channel pair per the board manual, then enable ECC and registered mode in BIOS; skipping the BIOS step leaves ECC inactive.

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