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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM for Supermicro H13SRA-F H13SRA-TF memory upgrade

SKU CH-XP1F-JN761

A 256 GB DDR5 6400 registered ECC kit built to the exact rank, voltage and timing Supermicro H13SRA boards require for full-capacity operation

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 256GB 2X128GB

Show 6 more configurations
  • 256GB kit lets you fully populate two slots for maximum capacity
  • DDR5 6400 speed with CL52 latency keeps data moving at rated throughput
  • Registered ECC design catches single-bit errors to protect critical workloads
  • 1V operation matches the motherboard's voltage requirement for stable recognition
  • 288-pin RDIMM form factor fits Supermicro H13SRA-F and H13SRA-TF exactly

Server Memory Kit

This NEMIX RAM kit delivers 256 GB of DDR5 registered ECC memory in a matched pair of 128 GB RDIMMs. It is built for the Supermicro H13SRA-F and H13SRA-TF motherboards that require 288-pin DDR5 modules. The exact rank, voltage and timing match the board's memory controller expectations for full-capacity recognition.

Sustained Workload Stability

Registered architecture buffers the address and command signals so the memory controller remains stable when every slot is populated at the rated 6400 MT/s speed. ECC circuitry detects and corrects single-bit errors on the fly, preventing silent data corruption during long-running compute or database tasks. The 1.1 V operating voltage supports consistent operation without thermal throttling under continuous load.

DDR5 Platform Constraints

The DDR5 6400 PC5-51200 interface provides the bandwidth ceiling for this kit; actual throughput depends on the motherboard's memory controller and population rules. Only systems that support 2Rx4 registered DIMMs at this voltage and latency can utilise the full 256 GB capacity. Builders must verify the manual for approved DIMM population order and maximum supported density per channel before installation.

Highlights

  • 256GB kit lets you fully populate two slots for maximum capacity
  • DDR5 6400 speed with CL52 latency keeps data moving at rated throughput
  • Registered ECC design catches single-bit errors to protect critical workloads
  • 1V operation matches the motherboard's voltage requirement for stable recognition
  • 288-pin RDIMM form factor fits Supermicro H13SRA-F and H13SRA-TF exactly

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-724K2
Capacity256GB (2 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 2X128GB DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

Does the 1.10V operating voltage help keep power draw and heat low when the server runs 24/7?

Yes, the kit runs at 1.10V, which is the standard DDR5 voltage for registered ECC modules and keeps power consumption and thermal output in check during continuous operation.

Do I need a Supermicro H13SRA-F or H13SRA-TF motherboard with 288-pin RDIMM slots to use this memory?

This 256GB kit is validated for the Supermicro H13SRA-F and H13SRA-TF boards that accept 288-pin DDR5 RDIMMs; other platforms are not guaranteed to recognise the 2Rx4 registered ECC configuration.

Can I mix these 128GB 2Rx4 DDR5 RDIMMs with smaller capacity DDR5 RDIMMs already installed in the same server?

Mixing different capacities or ranks is possible only if the motherboard manual approves the specific population order; the kit itself is a matched 2x128GB pair designed to run together at DDR5-6400 CL52.

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