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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 6400MHz CL52 1.1V ECC RDIMM for ASRock Rack W890D8-2L2T memory upgrade

SKU CH-RGJR-W5W2H

128 GB kit of eight 16 GB DDR5 6400 MHz CL52 ECC RDIMMs at 1.1 V for ASRock Rack W890D8-2L2T

  • Total capacity128 GB (8 × 16 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank1Rx8
  • 128 GB total capacity from eight 16 GB modules
  • DDR5 6400 MHz speed with CL52 latency
  • 1 V operation reduces power draw
  • ECC RDIMM registered design improves data integrity
  • Validated for ASRock Rack W890D8-2L2T motherboard

128GB DDR5 ECC RDIMM kit

This NEMIX RAM kit provides 128GB of DDR5 memory across eight 16GB registered DIMMs. It operates at 6400MHz with CL52 latency and a 1.1V voltage. The modules use 1Rx8 organisation and 288-pin DDR5 RDIMM form factor for server and workstation platforms.

For ASRock Rack W890D8-2L2T upgrades

This memory kit is validated for the ASRock Rack W890D8-2L2T motherboard. It suits administrators expanding registered ECC capacity on that specific platform. Builders needing unbuffered UDIMMs, non-ECC modules, or different pin counts should look elsewhere.

Eight modules fill eight slots

The 8x16GB configuration occupies all eight DIMM slots on compatible boards, delivering the full 128GB capacity in a single kit. Headroom ends when the platform's maximum registered DIMM limit or memory-controller speed ceiling is reached.

How it compares

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

Price $3,755.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $29.34 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-618K8
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (8 × 16 GB) DDR5 6400 MHz PC5-51200 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does my ASRock Rack W890D8-2L2T motherboard need to support DDR5 6400MHz ECC RDIMMs for this kit to work?

Yes, the board must accept 288‑pin DDR5 RDIMMs at 6400MHz with ECC and registered operation; the W890D8‑2L2T is the qualified platform for this 128GB kit.

Will these 1Rx8 modules run alongside any existing RDIMMs of a different rank or speed already installed in the server?

All slots should use matching 1Rx8 DDR5 6400MHz CL52 1.1V RDIMMs; mixing ranks or speeds can prevent the system from training memory correctly.

How can I confirm the kit is running at 6400MHz CL52 with ECC active after installation?

Check the BIOS memory information or OS tools such as dmidecode to verify 6400MHz data rate, CL52 latency, 1.1V voltage and ECC enabled on all eight modules.

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