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Four green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR51200-724K4 512GB 4x128GB DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM memory upgrade

SKU CH-9EPH-ZTAAD

512GB DDR5 6400 CL52 2Rx4 ECC Registered RDIMM kit validated for Supermicro H13SRA-F and H13SRA-TF motherboards

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

Show 6 more
  • 512GB total capacity from four 128GB modules
  • DDR5-6400 speed with CL52 latency at 1.1V
  • Registered ECC design corrects errors and supports full population
  • 288-pin RDIMM form factor matches Supermicro H13SRA-F/TF requirements
  • Built with Samsung Micron or Hynix chips for enterprise stability

Exact-match server kit

This 512GB kit delivers four 128GB DDR5 RDIMMs running at 6400 MT/s with CL52 latency and 1.1V operation. Registered ECC architecture and 2Rx4 rank organisation provide the signal integrity and error correction required by Supermicro H13SRA-F and H13SRA-TF motherboards.

Upgrade path and fitment

The kit replaces partial or slower DDR5 populations to reach full capacity at the board-rated speed. The jump is worth it when your workload needs maximum registered DIMM slots populated with matched rank, voltage and timing so the memory controller recognises every module without downclocking.

Pre-install checklist

Verify your motherboard manual for approved DIMM population order and maximum supported capacity per slot. Confirm the system requires 288-pin Registered ECC RDIMMs rather than unbuffered or SODIMM form factors. Ensure the BIOS version in use supports the full 512GB configuration at 6400 MT/s.

How it compares

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

Price $16,921.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $33.05 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 numberMR51200-724K4
Total capacity512 GB (4 × 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 items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 288-pin RDIMM modules fit the Supermicro H13SRA-F motherboard DIMM slots?

Yes, the kit uses the 288-pin DDR5 RDIMM form factor that the H13SRA-F and H13SRA-TF boards require; it is not a UDIMM or SODIMM.

What is the correct population order for the four 128 GB modules on these Supermicro boards?

Consult the motherboard manual for the approved DIMM population sequence; the kit is spec-matched to the board's memory-population rules.

Do the modules need active cooling since they have no heat spreader?

The modules ship without a heat spreader; rely on the server chassis airflow and follow the system vendor's thermal guidelines for fully populated RDIMM configurations.

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