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Two green DDR5 server memory modules with gold contacts and black heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2 x 128GB) DDR5 6400 ECC RDIMM 2Rx4 1.1V 288-Pin Server Memory

SKU CH-6HDV-GKP5V

A 256 GB DDR5 registered ECC server memory kit with two 128 GB modules running at 6400 MT/s and 1.1 V

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from two 128 GB modules
  • DDR5 6400 speed for high-throughput server workloads
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw under load
  • Dual-rank 2Rx4 organisation maximises density per channel

Capacity and purpose

This kit supplies 256 GB of DDR5 server memory across two 128 GB modules. It is built for registered DIMM slots that require ECC and 2Rx4 organisation. It is not for standard desktop or laptop computers that accept only unbuffered memory.

Interface limits

The modules run at DDR5 6400 with a CAS latency of 52 and operate at 1.1 V. They conform to the PC5 51200 data-rate specification and use the 288-pin RDIMM form factor. Systems that do not support registered ECC DDR5 at this speed cannot use the kit.

Build and connectors

Each DIMM uses major OEM chips from Samsung, Micron or Hynix and carries a registered buffer for signal integrity in multi-module configurations. The 288-pin edge connector fits only DDR5 RDIMM sockets, so the motherboard must provide the matching keying and electrical support.

How it compares

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

Price $8,524.99
Pricier than about 91% 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).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).
Price per GB $33.30 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Model namePart#: MR51200-724K2-SM-AS-1015CS-TNR
Part numberPart#: MR51200-724K2-SM-AS-1015CS-TNR
Total capacity256 GB (2 × 128 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

Should I choose the 2 x 128 GB kit or look for a different capacity for my server?

This kit provides 256 GB total across two 128 GB modules. Select it when your platform needs that exact capacity and has two free DDR5 RDIMM slots.

What does the 6400 speed rating deliver once the modules are installed?

The modules run at DDR5 6400 with CAS latency 52, giving a PC5-51200 data rate when the server memory controller operates at that frequency.

Is the 288-pin RDIMM interface compatible with standard DDR5 server boards?

Yes, the 288-pin registered ECC RDIMM fits DDR5 server motherboards that support registered memory; the interface caps at the module's rated 6400 MT/s.

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