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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400MHz CL52 1.1V ECC RDIMM 2Rx4 ASRock Rack W890D8-2L2T memory upgrade

SKU CH-ZJT3-7ZHN6

128 GB DDR5 ECC registered server memory kit with two 64 GB modules at 6400 MHz CL52, validated for ASRock Rack W890D8-2L2T

  • Total capacity128 GB (2 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • 128GB total capacity across two 64GB modules
  • DDR5 6400MHz speed for high-bandwidth server workloads
  • ECC registered design protects data integrity in critical systems
  • CL52 latency at 1.10V balances performance and power efficiency
  • Validated compatibility with ASRock Rack W890D8-2L2T motherboard

ASRock Rack W890D8-2L2T DDR5 upgrade

This 128GB kit contains two 64GB DDR5 6400MHz ECC RDIMM modules built for the ASRock Rack W890D8-2L2T motherboard. Registered operation and a CL52 latency at 1.1V provide the error correction and signal integrity that server platforms require.

Server and workstation builders needing ECC RDIMM

The kit suits administrators expanding a compatible ASRock Rack system with registered ECC memory. Builds that require unbuffered UDIMMs, non-ECC modules, or a different pin count cannot use these 288-pin RDIMMs.

6400MHz CL52 registered ECC specification

The DDR5 6400MHz CL52 1.1V 2Rx4 registered ECC profile determines whether the motherboard will train and run the memory at rated speed. Verify that the W890D8-2L2T firmware supports this exact data rate and timing before purchase.

How it compares

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

Price $4,589.99
Pricier than about 79% 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 $35.86 per GB
Pricier than about 90% 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 numberMR51200-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
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 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the ASRock Rack W890D8-2L2T motherboard slots?

Yes, the kit is built as a 288-pin DDR5 RDIMM kit specifically validated for the ASRock Rack W890D8-2L2T motherboard.

What is the correct order for seating the two 64GB RDIMMs during installation?

Populate the motherboard's primary memory channels first, following the slot numbering in the board manual, and press each module down until the retention clips click.

How often should the ECC RDIMM kit be tested or replaced in a server workload?

Run a full memory diagnostic at each planned maintenance window; ECC corrects single-bit errors on the fly, but modules only need replacement if uncorrectable errors appear.

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