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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 256GB 4x64GB 6400 CL52 ECC RDIMM Supermicro H13SST-G memory upgrade

SKU CH-ZWXN-8CM7A

A 256 GB DDR5 ECC RDIMM kit (four 64 GB modules) running at 6400 MHz with CL52 latency, 1.1 V registered operation and 2Rx4 rank, validated for the Supermicro H13SST-G motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB kit (4 × 64 GB) runs at DDR5-6400 full speed
  • Registered ECC RDIMM prevents silent data corruption in production
  • 1 V CL52 2Rx4 matches Supermicro H13SST-G memory controller exactly
  • 288-pin RDIMM form factor fits the board's DIMM slots correctly
  • Lifetime replacement warranty with US-based technical support included

256GB DDR5-6400 ECC RDIMM kit

This 256GB kit contains four 64GB DDR5-6400 registered ECC modules built for the Supermicro H13SST-G motherboard. It targets administrators who need the exact rank, voltage and timing the board's memory controller expects so the full capacity is recognised at rated speed.

Registered DDR5 population limits

Registered DDR5 DIMMs let the memory controller drive every slot at full capacity, but the motherboard still defines how many ranks it can address per channel and which slots must be filled first. Exceeding those limits or populating slots out of order will prevent the system from posting or force a lower data rate.

Verify manual before ordering

Check the Supermicro H13SST-G manual for the maximum supported capacity, approved DIMM population sequence and any BIOS version requirements. The board requires 288-pin RDIMMs; UDIMMs or SODIMMs will not fit and cannot be used as alternatives.

How it compares

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

Price $8,196.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $32.02 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 numberMR51200-924K4
Total capacity256 GB (4 × 64 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 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I choose the 256GB 4x64GB kit or a different capacity for my Supermicro H13SST-G?

The 256GB kit provides four 64GB modules at DDR5-6400 CL52 1.1V 2Rx4 registered ECC — the exact rank, voltage and timing the board expects for full-capacity recognition and rated speed.

What does DDR5-6400 PC5-51200 CL52 mean once installed in the server?

The modules run at 6400 MT/s with a CAS latency of 52 cycles at 1.1V; registered ECC architecture offloads the memory controller so all slots operate fully populated while single-bit errors are corrected on the fly.

Is the 288-pin RDIMM interface the right fit for the H13SST-G and what does it limit?

Yes — the board requires 288-pin registered RDIMMs, not UDIMM or SODIMM; the registered design lets every slot run at full capacity and speed under the motherboard's population rules.

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