We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR5 RDIMM modules, bare circuit boards, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 ECC RDIMM CL40 1.1V ASRock WRX90 WS EVO memory upgrade

SKU CH-Y04Z-T4BPC

A 512 GB DDR5 ECC registered DIMM kit of four 128 GB modules at 4800 MT/s CL40, 1.1 V, validated for ASRock WRX90 WS EVO workstations

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 512GB 4X128GB

Show 3 more
  • 512 GB total capacity scales memory-heavy workloads
  • DDR5 4800 speed feeds high-throughput server tasks
  • ECC registered design protects data integrity under load
  • 1 V operation reduces platform power draw
  • Four 128 GB modules fill quad-channel slots efficiently

Capacity and configuration

This is a 512GB kit built from four 128GB DDR5 modules. Each stick is a registered ECC RDIMM running at 4800MHz with a CL40 latency and 1.1V operation. The 4Rx4 organisation and 288-pin form factor target the ASRock WRX90 WS EVO workstation platform.

Workstation memory upgrade

The kit suits IT professionals expanding a compatible ASRock WRX90 WS EVO system for virtualization, rendering or large dataset workloads. It is not for consumer desktops that require unbuffered non-ECC memory or boards limited to lower capacities per slot.

Platform verification

Confirm the motherboard is the ASRock WRX90 WS EVO and that the BIOS revision supports 128GB registered DDR5 RDIMMs. Check that all four DIMM slots are free and that the CPU installed on the board enables the full eight-channel memory architecture.

How it compares

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

Price $14,878.99
Pricier than about 90% 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 $29.06 per GB
Pricier than about 82% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K4
Total capacity512 GB (4 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

Will this 512GB kit install directly into my ASRock WRX90 WS EVO motherboard?

The kit is built for the ASRock WRX90 WS EVO motherboard and uses 288-pin DDR5 RDIMM modules that fit the board's memory slots.

Can I mix these 128GB 4Rx4 modules with smaller DDR5 ECC RDIMMs I already own?

Mixing different capacities or ranks is not recommended; the motherboard performs best when all slots are populated with identical 128GB 4Rx4 modules.

How can I verify the memory runs at 4800 MT/s with CL40 after installation?

Enter the BIOS or use a system-information tool to confirm the memory speed shows 4800 MT/s and the CAS latency reads CL40.

More in Model-Specific Memory Upgrades

Similar items