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Four green DDR5 ECC RDIMM modules with black heat spreaders and gold contacts

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5-6400 ECC RDIMM 2Rx4 1.1V

SKU CH-2X5T-V2WH2

256GB kit of four 64GB DDR5-6400 ECC registered DIMMs with CAS 52 at 1.1V

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from four 64 GB modules
  • DDR5-6400 speed rated at PC5-51200 bandwidth
  • ECC registered design detects and corrects memory errors
  • Low 1.1 V operating voltage reduces server power draw
  • Dual-rank 2Rx4 organisation on 288-pin RDIMM form factor

256GB DDR5-6400 ECC RDIMM kit

This NEMIX RAM kit provides 256GB of DDR5 server memory across four 64GB registered DIMMs. Each module operates at 6400MHz with a CAS latency of 52 and a voltage of 1.1V. The 2Rx4 organisation and on-die ECC suit multi-socket platforms that require registered memory.

Suited for DDR5 servers needing registered ECC

The registered design and ECC function target enterprise workloads where data integrity and signal stability matter. Systems that accept only unbuffered non-ECC modules cannot use this kit. Builders without DDR5 RDIMM support should look elsewhere.

288-pin DDR5 RDIMM form factor

Modules use the standard 288-pin DDR5 RDIMM layout keyed for registered server boards. Confirm the motherboard qualified-vendor list for DDR5-6400 RDIMM compatibility before purchase.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $8,746.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).
Price per GB $34.17 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 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
Model namePart#: MR51200-924K4-SM-AS-1015CS-TNR
Part numberPart#: MR51200-924K4-SM-AS-1015CS-TNR
Total capacity256 GB (4 × 64 GB)
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.1 V

Questions about this item

Does the 288-pin DDR5 RDIMM fit a standard server DIMM slot?

Yes, the 288-pin DDR5 RDIMM matches the standard server DIMM slot. Each module is a 64GB 2Rx4 registered DIMM, and the kit includes four modules for 256GB total.

What is the correct seating order for the four 64GB modules?

Install all four 64GB modules in the slots specified by the server manual for a 256GB quad-channel population. The common error is leaving a required slot empty or mixing ranks.

When should the registered ECC RDIMMs be replaced?

Replace modules if the server logs corrected ECC errors that exceed the platform threshold or if memory diagnostics report uncorrectable failures on any of the four 64GB sticks.

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