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 without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM ASRock W790 WS

SKU CH-N98R-SWV9P

128GB DDR5 4800 ECC registered DIMM kit, CL40 latency, 1.1V operation, validated for ASRock W790 WS workstation motherboards

  • 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
  • 128 GB total capacity with two 64 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC registered RDIMM for data integrity
  • CL40 CAS latency at 1.10 V operating voltage
  • Validated for ASRock W790 WS workstation motherboard

ASRock W790 WS DDR5 Kit

This 128 GB kit contains two 64 GB registered DDR5 modules built for the ASRock W790 WS workstation motherboard. ECC and registered signalling protect data integrity in professional server and workstation workloads. The modules run at 4800 MT/s with a CL40 latency at 1.1 V.

128 GB ECC Registered Capacity

Two 64 GB 2Rx4 modules provide 128 GB of error-correcting memory for large datasets, virtualization and rendering tasks. Registered buffering reduces electrical load on the memory controller, allowing stable operation at full capacity. Systems needing more than 128 GB must add further compatible kits.

DDR5 4800 PC5-38400 Interface

The kit operates at the DDR5 4800 standard (PC5-38400) with 288-pin RDIMM form factor. Bandwidth and latency are fixed by this JEDEC speed grade; higher frequencies are not supported by this module. Compatibility is validated for the ASRock W790 WS platform only.

How it compares

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

Price $3,289.99
Pricier than about 74% 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 $25.70 per GB
Pricier than about 70% 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

Will this 2Rx4 DDR5 4800 CL40 kit run correctly with other DDR5 RDIMMs already installed in my ASRock W790 WS?

Mixing ranks, speeds or latencies can prevent the system from training; for stable operation populate all slots with identical 2Rx4 DDR5 4800 CL40 modules.

How can I confirm the ECC function is active after installing these 1.1 V 288-pin modules?

Enter the BIOS and verify ECC is enabled, then run a memory diagnostic to confirm error detection and correction are working.

Does the package include only the two 64 GB RDIMMs or are any cables or brackets supplied?

The kit contains only the two 64 GB DDR5 4800 ECC RDIMM modules; no cables, brackets or additional accessories are included.

More in Model-Specific Memory Upgrades

Similar items