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Two bare green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 ECC RDIMM CL40 1.1V ASRock WRX90 WS EVO memory upgrade

SKU CH-VYJE-MDRY0

A 64GB kit of two 32GB DDR5 4800 ECC registered DIMMs at CL40 and 1.1V, validated for the ASRock WRX90 WS EVO motherboard

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 64GB 2X32GB

Show 3 more
  • ECC protection safeguards data integrity for mission-critical workloads
  • Registered design enables stable 64 GB capacity across two 32 GB modules
  • DDR5 4800 speed delivers PC5-38400 bandwidth for demanding applications
  • Low 1.1 V operation reduces power draw in server environments
  • Validated compatibility with ASRock WRX90 WS EVO motherboard

ASRock WRX90 WS EVO memory kit

This 64 GB kit contains two 32 GB DDR5 registered DIMMs built for the ASRock WRX90 WS EVO motherboard. It targets workstation and server builders who need ECC protection and registered signalling for stable operation under sustained loads.

Build quality and daily use

Modules use major OEM chips from Samsung, Micron or Hynix and run at 1.10 V without a heat spreader. The 288-pin RDIMM form factor fits standard DDR5 server slots, and the registered design reduces electrical load on the memory controller during continuous operation.

Deciding specification

The kit runs at DDR5 4800 with CL40 latency and 1Rx4 organisation, delivering PC5-38400 bandwidth. Buyers who need higher frequency, lower latency or non-ECC unbuffered memory should look elsewhere.

How it compares

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

Price $1,683.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $26.31 per GB
Pricier than about 72% 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 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

Does the DDR5 4800 interface cap the memory speed at 4800 MT/s on the ASRock WRX90 WS EVO?

Yes, the kit is rated DDR5 4800 (PC5-38400) and will run at 4800 MT/s on the ASRock WRX90 WS EVO unless the platform downclocks it.

What physical slot and clearance does the 288-pin RDIMM need on the WRX90 WS EVO?

It uses standard 288-pin DDR5 RDIMM slots; the modules have no heat spreader so they fit under most CPU coolers.

How is the 2x32GB kit installed and which step is often missed?

Power off, open the chassis, align the notch on each 288-pin module with the key in the DDR5 RDIMM slot, press firmly until both side clips click; the step often missed is fully seating both modules so both clips lock.

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