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Four green circuit boards with gold edge connectors and black memory chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 512GB 4x128GB 6400MHz CL52 ECC RDIMM memory upgrade

SKU CH-ZX1Y-26YY9

A 512 GB DDR5 server memory kit of four 128 GB registered ECC RDIMMs running at 6400 MHz CL52 and 1.1 V, validated for the ASRock Rack TURIN2D16-2T/ROT motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

Show 4 more
  • 512 GB total capacity from four 128 GB modules for high-density server workloads
  • DDR5 6400 MHz speed with CL52 latency for fast registered memory performance
  • ECC and registered design corrects single-bit errors and stabilises fully populated slots
  • 1 V operating voltage matches the motherboard's DDR5 specification exactly
  • 288-pin RDIMM form factor verified for the ASRock Rack TURIN2D16-2T/ROT motherboard

Exact-Match DDR5 Server Kit

This 512GB kit contains four 128GB DDR5-6400 Registered ECC RDIMMs built to the precise rank, voltage, and timing the ASRock Rack TURIN2D16-2T/ROT motherboard expects. It targets administrators who need full-capacity population on that specific platform without manual tuning.

512GB at 6400 MT/s

Four dual-rank 2Rx4 modules deliver the full 512GB at the board's rated DDR5-6400 speed with CL52 latency and 1.1V operation. Registered buffering lets every slot run fully populated at rated frequency, while on-die ECC corrects single-bit errors before they reach production workloads. Capacity stops at 512GB; larger configurations require a different motherboard or DIMM density.

Registered RDIMM Build

The 288-pin RDIMM form factor fits only DDR5 Registered slots; it will not work in UDIMM or SODIMM sockets. No heat spreader is included, so airflow across the modules must be managed by the chassis. Installation must follow the motherboard's population order to initialise correctly.

How it compares

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

Price $16,784.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $32.78 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 numberMR51200-724K4
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will this 4 x 128 GB DDR5 6400 kit run reliably alongside any existing RDIMMs I keep in my ASRock Rack TURIN2D16-2T/ROT?

The kit is validated for that motherboard at 6400 MHz, 1.1 V, CL52, 2Rx4 registered ECC; mixing with other modules requires identical rank, voltage, timing and registration or the memory controller may down-clock or disable slots.

How can I confirm the 512 GB kit is operating at its rated DDR5 6400 speed and ECC function after installation?

Enter the BIOS and verify the memory frequency shows 6400 MT/s, voltage 1.1 V, CAS latency 52 and that ECC is reported active on all four DIMMs.

What exactly ships in the box and what extra items might I need to complete the upgrade?

The package contains the 512 GB kit as four 128 GB 288-pin DDR5 RDIMMs; no heat spreaders, cables or tools are included, so have a compatible motherboard slot layout and anti-static precautions ready.

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