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Two green DDR5 RDIMM modules without heat spreaders in a matched pair

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 2x128GB ECC RDIMM Supermicro H13SST-G memory upgrade

SKU CH-PQ19-7WHV2

A 256 GB DDR5 6400 RDIMM kit with ECC and registered buffering, matched to the Supermicro H13SST-G motherboard

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from two 128 GB modules
  • DDR5 6400 speed rated at PC5-51200 bandwidth
  • Registered ECC design corrects single-bit errors automatically
  • 1 V operation at CL52 latency specification
  • Verified fit for Supermicro H13SST-G motherboard

256 GB DDR5-6400 ECC RDIMM Kit

This NEMIX RAM kit provides 256 GB of DDR5-6400 registered ECC memory in two 128 GB modules. It is built for the Supermicro H13SST-G motherboard and matches the board's 288-pin RDIMM requirement, voltage and timing so the system recognises full capacity at rated speed.

Suited for Supermicro H13SST-G servers

The kit fits administrators expanding a Supermicro H13SST-G server that accepts 2Rx4 registered DIMMs at 1.1 V. It is not for systems that need unbuffered UDIMMs, SODIMMs, lower-density modules or a different DDR generation.

DDR5-6400 Registered ECC Specification

The decisive specification is DDR5-6400 (PC5-51200) with CL52 latency, 1.1 V operation and 2Rx4 registered ECC organisation. If the motherboard demands different speed, voltage, rank or buffering, this kit will not operate correctly.

How it compares

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

Price $8,802.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $34.39 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 numberMR51200-724K2
Total capacity256 GB (2 × 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 systemsSupermicro
In the box
Included items256 GB 2 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will these 288-pin DDR5 RDIMMs physically fit the Supermicro H13SST-G motherboard DIMM slots?

Yes, the kit uses the 288-pin Registered RDIMM form factor that the H13SST-G requires; it is not a UDIMM or SODIMM so the keying and height match the server board slots exactly.

What is the correct installation order for the two 128 GB modules on the H13SST-G, and which step do builders most often miss?

Install the first module in the slot designated DIMM A1 (or CPU1 Channel 0) and the second in the matching slot for the second channel; the step most often missed is consulting the motherboard manual for the exact population sequence before seating the modules.

If a module fails years from now, what replacement process applies to this 256 GB kit?

The kit is covered by a lifetime replacement warranty with free US-based technical support; contact the supplier to arrange a swap for the defective 128 GB RDIMM.

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