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
Two green DDR5 RDIMM sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 ECC RDIMM CL40 2Rx4 1.1V ASRock WRX90 memory upgrade

SKU CH-CKSR-QPTEY

128 GB DDR5-4800 ECC registered server memory kit with two 64 GB modules at CL40 and 1.1 V, validated for ASRock WRX90 workstation boards

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V

Capacity 128GB 2X64GB

Show 3 more
  • 128GB total capacity for memory-intensive workloads
  • DDR5 4800 speed handles demanding server applications
  • ECC registered design protects data integrity
  • 1V operation reduces power consumption
  • 2Rx4 dual-rank organisation maximises density per slot

ASRock WRX90 DDR5 ECC kit

This 128GB kit contains two 64GB DDR5 4800 RDIMM modules built for the ASRock WRX90 WS EVO motherboard. Each stick runs at 1.1V with CL40 latency and registered ECC for data integrity. The 2Rx4 organisation suits multi-channel workstation boards that require registered memory.

Sustained server workloads

Registered ECC modules buffer address and command signals, reducing electrical load on the memory controller during continuous operation. ECC corrects single-bit errors on the fly, preventing silent data corruption in long-running compute or storage tasks. The 1.1V operating voltage keeps power draw stable across extended duty cycles.

128GB registered DDR5 capacity

The kit delivers 128GB in a two-module package, matching the density ceiling for many dual-socket workstation configurations. Builders who need more storage-class memory per channel or who populate boards with eight or more slots must look beyond this two-stick limit.

How it compares

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

Price $3,604.99
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 $28.16 per GB
Pricier than about 79% 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 numberMR38400-924K2
Total capacity128 GB (2 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 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

How much power does the 1.10V DDR5 4800 kit draw under sustained load?

Each module runs at 1.10V; total power depends on the ASRock WRX90 platform and workload, not on the memory alone.

Does the ASRock WRX90 WS EVO motherboard need a specific BIOS version or CPU to recognise these 2Rx4 ECC RDIMMs?

The kit is validated for the ASRock WRX90 WS EVO; compatibility with particular BIOS revisions or processors is determined by the motherboard vendor.

Can I mix these CL40 64GB modules with existing DDR5 4800 ECC RDIMMs of a different capacity or rank?

Mixing capacities or ranks is not recommended; the WRX90 platform expects identical modules per channel for stable operation.

More in Model-Specific Memory Upgrades

Similar items