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Two green DDR4 RDIMM modules with black chips no heat spreader

NEMIX RAM

NEMIX RAM DDR4 3200 256GB (2x128GB) ECC RDIMM CL22 1.2V 288-pin server RAM

SKU CH-6KRK-GAF1H

256 GB dual-rank DDR4-3200 ECC registered server memory kit in two 128 GB modules at CL22 and 1.2 V

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered

Capacity 256GB (2 x 128GB)

  • 256 GB total capacity with two 128 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • ECC registered design detects and corrects memory errors
  • CL22 latency at 1.20 V operating voltage
  • Built with major OEM Samsung, Micron or Hynix chips

256GB DDR4 ECC RDIMM kit

This 256GB kit contains two 128GB DDR4 3200 registered DIMMs built for servers and workstations that require error-correcting memory. The modules run at 1.2V with CL22 latency and use an 8Rx4 organisation. They are intended for IT professionals who need maximum capacity in a two-slot configuration.

Sustained load behaviour with ECC

Registered buffering and on-die ECC keep data integrity intact during continuous multi-threaded workloads such as virtualisation, database serving or scientific compute. The 8Rx4 density allows the memory controller to interleave ranks efficiently, reducing bottlenecks when all 256GB are actively addressed for long periods.

Installation notes for registered DIMMs

The 288-pin RDIMM form factor fits standard DDR4 server slots, but the motherboard must explicitly support registered ECC memory and 8Rx4 modules. Systems that only accept unbuffered UDIMMs or lower rank counts will not post. Always verify the vendor qualified-vendor list before seating the modules.

How it compares

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

Price $1,938.99
Pricier than about 86% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $7.57 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Memory
Model nameDDR4 ECC RDIMM Registered Server Memory
Part numberMR25600-784K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Does the 1.20 V registered design keep power draw low when the 256 GB kit runs continuously?

The modules operate at 1.20 V with registered buffering, which reduces electrical load on the memory controller during sustained server workloads.

What motherboard features are required to use this 8Rx4 ECC RDIMM kit?

A server or workstation motherboard with 288-pin DDR4 RDIMM slots that supports ECC registered memory and 8Rx4 rank configuration is required.

Can this DDR4 3200 kit operate in a system that also has slower DDR4 modules installed?

The kit runs at DDR4 3200 CL22; the motherboard will typically clock all installed memory to the lowest common speed and latency.

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