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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 256GB (8×32GB) DDR5 6400 CL52 ECC RDIMM for ASRock Rack W890D8-2L2T memory upgrade

SKU CH-8DSM-4S29Q

256 GB DDR5 ECC registered server memory kit in eight 32 GB modules at 6400 MT/s CL52 1.1 V for ASRock Rack W890D8-2L2T

  • Total capacity256 GB (8 × 32 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx8
  • 256GB total capacity across eight 32GB modules
  • ECC registered design protects data integrity in servers
  • DDR5 6400 speed with CL52 latency
  • 10V operation reduces power draw
  • 288-pin RDIMM form factor fits ASRock Rack W890D8-2L2T

Capacity and kit layout

This 256GB kit contains eight 32GB DDR5 ECC RDIMM modules for the ASRock Rack W890D8-2L2T motherboard. It is aimed at server and workstation builds that need registered memory with error correction. The kit delivers 256GB total capacity across all populated slots.

Build integration and slot use

Each module uses the 288-pin DDR5 RDIMM form factor and runs at 1.10V. Registered buffering reduces electrical load on the memory controller when all eight slots are filled. The kit occupies every DIMM socket on the board, so no further memory can be added without removing modules.

Headroom and limits

Rated at 6400MHz with CL52 latency, the memory operates at the platform's supported DDR5 speed. The 2Rx8 organisation provides density within each module. Builds requiring more than 256GB or lower latency than CL52 will need a different memory configuration.

How it compares

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

Price $9,435.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $36.86 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 numberMR51200-328K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items256 GB (8 × 32 GB) DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

What is the CAS latency of these DDR5 6400 modules?

The kit runs at CL52 latency as specified for the DDR5 6400 speed grade.

How much power do the eight registered DIMMs draw at the rated 1.1 V?

Each module operates at 1.1 V; total system power depends on the motherboard's memory controller and load.

Does the ASRock Rack W890D8-2L2T motherboard need to support registered ECC DDR5 RDIMMs for this kit to work?

Yes, the board must accept 288-pin DDR5 RDIMMs with ECC and registered buffering for the 8×32 GB kit to function.

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